Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- `.env.production.sample`:
  Upstream changed it completely.
  Changed ours to merge upstream's new structure, but
  keeping most of the information.

32 files changed, 432 insertions, 415 deletions

diff --git a/.env.production.sample b/.env.production.sample
index b76a937ad..6d9929f70 100644
--- a/.env.production.sample
+++ b/.env.production.sample
@@ -1,27 +1,15 @@
-# Service dependencies
-# You may set REDIS_URL instead for more advanced options
-# You may also set REDIS_NAMESPACE to share Redis between multiple Mastodon servers
-REDIS_HOST=redis
-REDIS_PORT=6379
-# You may set DATABASE_URL instead for more advanced options
-DB_HOST=db
-DB_USER=postgres
-DB_NAME=postgres
-DB_PASS=
-DB_PORT=5432
-# Optional ElasticSearch configuration
-# You may also set ES_PREFIX to share the same cluster between multiple Mastodon servers (falls back to REDIS_NAMESPACE if not set)
-# ES_ENABLED=true
-# ES_HOST=es
-# ES_PORT=9200
+# This is a sample configuration file. You can generate your configuration
+# with the `rake mastodon:setup` interactive setup wizard, but to customize
+# your setup even further, you'll need to edit it manually. This sample does
+# not demonstrate all available configuration options. Please look at
+# https://docs.joinmastodon/admin/config/ for the full documentation.
 
 # Federation
-# Note: Changing LOCAL_DOMAIN at a later time will cause unwanted side effects, including breaking all existing federation.
-# LOCAL_DOMAIN should *NOT* contain the protocol part of the domain e.g https://example.com.
+# ----------
+# This identifies your server and cannot be changed safely later
+# ----------
 LOCAL_DOMAIN=example.com
 
-# Changing LOCAL_HTTPS in production is no longer supported. (Mastodon will always serve https:// links)
-
 # Use this only if you need to run mastodon on a different domain than the one used for federation.
 # You can read more about this option on https://github.com/tootsuite/documentation/blob/master/Running-Mastodon/Serving_a_different_domain.md
 # DO *NOT* USE THIS UNLESS YOU KNOW *EXACTLY* WHAT YOU ARE DOING.
@@ -32,107 +20,99 @@ LOCAL_DOMAIN=example.com
 # be added. Comma separated values
 # ALTERNATE_DOMAINS=example1.com,example2.com
 
-# Application secrets
+# Use HTTP proxy for outgoing request (optional)
+# http_proxy=http://gateway.local:8118
+# Access control for hidden service.
+# ALLOW_ACCESS_TO_HIDDEN_SERVICE=true
+
+# Authorized fetch mode (optional)
+# Require remote servers to authentify when fetching toots, see
+# https://docs.joinmastodon.org/admin/config/#authorized_fetch
+# AUTHORIZED_FETCH=true
+
+# Limited federation mode (optional)
+# Only allow federation with specific domains, see
+# https://docs.joinmastodon.org/admin/config/#whitelist_mode
+# LIMITED_FEDERATION_MODE=true
+
+# Redis
+# -----
+REDIS_HOST=localhost
+REDIS_PORT=6379
+
+
+# PostgreSQL
+# ----------
+DB_HOST=/var/run/postgresql
+DB_USER=mastodon
+DB_NAME=mastodon_production
+DB_PASS=
+DB_PORT=5432
+
+
+# ElasticSearch (optional)
+# ------------------------
+#ES_ENABLED=true
+#ES_HOST=localhost
+#ES_PORT=9200
+
+
+# Secrets
+# -------
 # Generate each with the `RAILS_ENV=production bundle exec rake secret` task (`docker-compose run --rm web bundle exec rake secret` if you use docker compose)
+# -------
 SECRET_KEY_BASE=
 OTP_SECRET=
 
-# VAPID keys (used for push notifications
-# You can generate the keys using the following command (first is the private key, second is the public one)
+
+# Web Push
+# --------
+# Generate with `rake mastodon:webpush:generate_vapid_key` (first is the private key, second is the public one)
 # You should only generate this once per instance. If you later decide to change it, all push subscription will
 # be invalidated, requiring the users to access the website again to resubscribe.
-#
-# Generate with `RAILS_ENV=production bundle exec rake mastodon:webpush:generate_vapid_key` task (`docker-compose run --rm web bundle exec rake mastodon:webpush:generate_vapid_key` if you use docker compose)
-#
-# For more information visit https://rossta.net/blog/using-the-web-push-api-with-vapid.html
+# --------
 VAPID_PRIVATE_KEY=
 VAPID_PUBLIC_KEY=
 
+
 # Registrations
+# -------------
+
 # Single user mode will disable registrations and redirect frontpage to the first profile
 # SINGLE_USER_MODE=true
+
 # Prevent registrations with following e-mail domains
 # EMAIL_DOMAIN_DENYLIST=example1.com|example2.de|etc
+
 # Only allow registrations with the following e-mail domains
 # EMAIL_DOMAIN_ALLOWLIST=example1.com|example2.de|etc
 
+#TODO move this
 # Optionally change default language
 # DEFAULT_LOCALE=de
 
-# E-mail configuration
-# Note: Mailgun and SparkPost (https://sparkpo.st/smtp) each have good free tiers
-# If you want to use an SMTP server without authentication (e.g local Postfix relay)
-# then set SMTP_AUTH_METHOD and SMTP_OPENSSL_VERIFY_MODE to 'none' and
-# *comment* SMTP_LOGIN and SMTP_PASSWORD (leaving them blank is not enough).
+
+# Sending mail
+# ------------
 SMTP_SERVER=smtp.mailgun.org
 SMTP_PORT=587
 SMTP_LOGIN=
 SMTP_PASSWORD=
-SMTP_FROM_ADDRESS=notifications@example.com
-#SMTP_REPLY_TO=
-#SMTP_DOMAIN= # defaults to LOCAL_DOMAIN
-#SMTP_DELIVERY_METHOD=smtp # delivery method can also be sendmail
-#SMTP_AUTH_METHOD=plain
-#SMTP_CA_FILE=/etc/ssl/certs/ca-certificates.crt
-#SMTP_OPENSSL_VERIFY_MODE=peer
-#SMTP_ENABLE_STARTTLS_AUTO=true
-#SMTP_TLS=true
-
-# Optional user upload path and URL (images, avatars). Default is :rails_root/public/system. If you set this variable, you are responsible for making your HTTP server (eg. nginx) serve these files.
-# PAPERCLIP_ROOT_PATH=/var/lib/mastodon/public-system
-# PAPERCLIP_ROOT_URL=/system
-
-# Optional asset host for multi-server setups
-# The asset host must allow cross origin request from WEB_DOMAIN or LOCAL_DOMAIN
-# if WEB_DOMAIN is not set. For example, the server may have the
-# following header field:
-# Access-Control-Allow-Origin: https://example.com/
-# CDN_HOST=https://assets.example.com
+SMTP_FROM_ADDRESS=notificatons@example.com
 
-# Optional list of hosts that are allowed to serve media for your instance
-# This is useful if you include external media in your custom CSS or about page,
-# or if your data storage provider makes use of redirects to other domains.
-# EXTRA_DATA_HOSTS=https://data.example1.com|https://data.example2.com
 
-# S3 (optional)
+# File storage (optional)
+# -----------------------
 # The attachment host must allow cross origin request from WEB_DOMAIN or
 # LOCAL_DOMAIN if WEB_DOMAIN is not set. For example, the server may have the
 # following header field:
 # Access-Control-Allow-Origin: https://192.168.1.123:9000/
-# S3_ENABLED=true
-# S3_BUCKET=
-# AWS_ACCESS_KEY_ID=
-# AWS_SECRET_ACCESS_KEY=
-# S3_REGION=
-# S3_PROTOCOL=http
-# S3_HOSTNAME=192.168.1.123:9000
-
-# S3 (Minio Config (optional) Please check Minio instance for details)
-# The attachment host must allow cross origin request - see the description
-# above.
-# S3_ENABLED=true
-# S3_BUCKET=
-# AWS_ACCESS_KEY_ID=
-# AWS_SECRET_ACCESS_KEY=
-# S3_REGION=
-# S3_PROTOCOL=https
-# S3_HOSTNAME=
-# S3_ENDPOINT=
-# S3_SIGNATURE_VERSION=
-
-# Google Cloud Storage (optional)
-# Use S3 compatible API. Since GCS does not support Multipart Upload,
-# increase the value of S3_MULTIPART_THRESHOLD to disable Multipart Upload.
-# The attachment host must allow cross origin request - see the description
-# above.
-# S3_ENABLED=true
-# AWS_ACCESS_KEY_ID=
-# AWS_SECRET_ACCESS_KEY=
-# S3_REGION=
-# S3_PROTOCOL=https
-# S3_HOSTNAME=storage.googleapis.com
-# S3_ENDPOINT=https://storage.googleapis.com
-# S3_MULTIPART_THRESHOLD=52428801 # 50.megabytes
+# -----------------------
+#S3_ENABLED=true
+#S3_BUCKET=files.example.com
+#AWS_ACCESS_KEY_ID=
+#AWS_SECRET_ACCESS_KEY=
+#S3_ALIAS_HOST=files.example.com
 
 # Swift (optional)
 # The attachment host must allow cross origin request - see the description
@@ -155,50 +135,27 @@ SMTP_FROM_ADDRESS=notifications@example.com
 # Defaults to 60 seconds. Set to 0 to disable
 # SWIFT_CACHE_TTL=
 
+# Optional asset host for multi-server setups
+# The asset host must allow cross origin request from WEB_DOMAIN or LOCAL_DOMAIN
+# if WEB_DOMAIN is not set. For example, the server may have the
+# following header field:
+# Access-Control-Allow-Origin: https://example.com/
+# CDN_HOST=https://assets.example.com
+
+# Optional list of hosts that are allowed to serve media for your instance
+# This is useful if you include external media in your custom CSS or about page,
+# or if your data storage provider makes use of redirects to other domains.
+# EXTRA_DATA_HOSTS=https://data.example1.com|https://data.example2.com
+
 # Optional alias for S3 (e.g. to serve files on a custom domain, possibly using Cloudfront or Cloudflare)
 # S3_ALIAS_HOST=
 
 # Streaming API integration
 # STREAMING_API_BASE_URL=
 
-# Advanced settings
-# If you need to use pgBouncer, you need to disable prepared statements:
-# PREPARED_STATEMENTS=false
-
-# Cluster number setting for streaming API server.
-# If you comment out following line, cluster number will be `numOfCpuCores - 1`.
-STREAMING_CLUSTER_NUM=1
-
-# Docker mastodon user
-# If you use Docker, you may want to assign UID/GID manually.
-# UID=1000
-# GID=1000
- 
-# Maximum allowed character count
-# MAX_TOOT_CHARS=500
-
-# Maximum number of pinned posts
-# MAX_PINNED_TOOTS=5
-
-# Maximum allowed bio characters
-# MAX_BIO_CHARS=500
-
-# Maximim number of profile fields allowed
-# MAX_PROFILE_FIELDS=4
-
-# Maximum allowed display name characters
-# MAX_DISPLAY_NAME_CHARS=30
-
-# Maximum image and video/audio upload sizes
-# Units are in bytes
-# 1048576 bytes equals 1 megabyte
-# MAX_IMAGE_SIZE=8388608
-# MAX_VIDEO_SIZE=41943040
-
-# Maximum search results to display
-# Only relevant when elasticsearch is installed
-# MAX_SEARCH_RESULTS=20
 
+# External authentication (optional)
+# ----------------------------------
 # LDAP authentication (optional)
 # LDAP_ENABLED=true
 # LDAP_HOST=localhost
@@ -276,17 +233,33 @@ STREAMING_CLUSTER_NUM=1
 # SAML_ATTRIBUTES_STATEMENTS_VERIFIED=
 # SAML_ATTRIBUTES_STATEMENTS_VERIFIED_EMAIL=
 
-# Use HTTP proxy for outgoing request (optional)
-# http_proxy=http://gateway.local:8118
-# Access control for hidden service.
-# ALLOW_ACCESS_TO_HIDDEN_SERVICE=true
 
-# Authorized fetch mode (optional)
-# Require remote servers to authentify when fetching toots, see
-# https://docs.joinmastodon.org/admin/config/#authorized_fetch
-# AUTHORIZED_FETCH=true
+# Custom settings
+# ---------------
+# Various ways to customize Mastodon's behavior
+# ---------------
+ 
+# Maximum allowed character count
+MAX_TOOT_CHARS=500
 
-# Limited federation mode (optional)
-# Only allow federation with specific domains, see
-# https://docs.joinmastodon.org/admin/config/#whitelist_mode
-# LIMITED_FEDERATION_MODE=true
+# Maximum number of pinned posts
+MAX_PINNED_TOOTS=5
+
+# Maximum allowed bio characters
+MAX_BIO_CHARS=500
+
+# Maximim number of profile fields allowed
+MAX_PROFILE_FIELDS=4
+
+# Maximum allowed display name characters
+MAX_DISPLAY_NAME_CHARS=30
+
+# Maximum image and video/audio upload sizes
+# Units are in bytes
+# 1048576 bytes equals 1 megabyte
+# MAX_IMAGE_SIZE=8388608
+# MAX_VIDEO_SIZE=41943040
+
+# Maximum search results to display
+# Only relevant when elasticsearch is installed
+# MAX_SEARCH_RESULTS=20
diff --git a/Gemfile b/Gemfile
index edd0da9fc..aad509562 100644
--- a/Gemfile
+++ b/Gemfile
@@ -48,6 +48,7 @@ gem 'omniauth-cas', '~> 1.1'
 gem 'omniauth-saml', '~> 1.10'
 gem 'omniauth', '~> 1.9'
 
+gem 'color_diff', '~> 0.1'
 gem 'discard', '~> 1.2'
 gem 'doorkeeper', '~> 5.4'
 gem 'ed25519', '~> 1.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index fc59c882d..d91d70191 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -165,6 +165,7 @@ GEM
     cocaine (0.5.8)
       climate_control (>= 0.0.3, < 1.0)
     coderay (1.1.3)
+    color_diff (0.1)
     concurrent-ruby (1.1.6)
     connection_pool (2.2.3)
     crack (0.4.3)
@@ -690,6 +691,7 @@ DEPENDENCIES
   chewy (~> 5.1)
   cld3 (~> 3.3.0)
   climate_control (~> 0.2)
+  color_diff (~> 0.1)
   concurrent-ruby
   connection_pool
   devise (~> 4.7)
diff --git a/app/javascript/mastodon/components/status.js b/app/javascript/mastodon/components/status.js
index 827b69500..f9f6736e6 100644
--- a/app/javascript/mastodon/components/status.js
+++ b/app/javascript/mastodon/components/status.js
@@ -353,7 +353,9 @@ class Status extends ImmutablePureComponent {
                 src={attachment.get('url')}
                 alt={attachment.get('description')}
                 poster={attachment.get('preview_url') || status.getIn(['account', 'avatar_static'])}
-                blurhash={attachment.get('blurhash')}
+                backgroundColor={attachment.getIn(['meta', 'colors', 'background'])}
+                foregroundColor={attachment.getIn(['meta', 'colors', 'foreground'])}
+                accentColor={attachment.getIn(['meta', 'colors', 'accent'])}
                 duration={attachment.getIn(['meta', 'original', 'duration'], 0)}
                 width={this.props.cachedMediaWidth}
                 height={110}
diff --git a/app/javascript/mastodon/features/audio/index.js b/app/javascript/mastodon/features/audio/index.js
index 99926e52a..686709ac3 100644
--- a/app/javascript/mastodon/features/audio/index.js
+++ b/app/javascript/mastodon/features/audio/index.js
@@ -5,131 +5,12 @@ import { formatTime } from 'mastodon/features/video';
 import Icon from 'mastodon/components/icon';
 import classNames from 'classnames';
 import { throttle } from 'lodash';
-import { encode, decode } from 'blurhash';
 import { getPointerPosition, fileNameFromURL } from 'mastodon/features/video';
 import { debounce } from 'lodash';
 
-const digitCharacters = [
-  '0',
-  '1',
-  '2',
-  '3',
-  '4',
-  '5',
-  '6',
-  '7',
-  '8',
-  '9',
-  'A',
-  'B',
-  'C',
-  'D',
-  'E',
-  'F',
-  'G',
-  'H',
-  'I',
-  'J',
-  'K',
-  'L',
-  'M',
-  'N',
-  'O',
-  'P',
-  'Q',
-  'R',
-  'S',
-  'T',
-  'U',
-  'V',
-  'W',
-  'X',
-  'Y',
-  'Z',
-  'a',
-  'b',
-  'c',
-  'd',
-  'e',
-  'f',
-  'g',
-  'h',
-  'i',
-  'j',
-  'k',
-  'l',
-  'm',
-  'n',
-  'o',
-  'p',
-  'q',
-  'r',
-  's',
-  't',
-  'u',
-  'v',
-  'w',
-  'x',
-  'y',
-  'z',
-  '#',
-  '$',
-  '%',
-  '*',
-  '+',
-  ',',
-  '-',
-  '.',
-  ':',
-  ';',
-  '=',
-  '?',
-  '@',
-  '[',
-  ']',
-  '^',
-  '_',
-  '{',
-  '|',
-  '}',
-  '~',
-];
-
-const decode83 = (str) => {
-  let value = 0;
-  let c, digit;
-
-  for (let i = 0; i < str.length; i++) {
-    c = str[i];
-    digit = digitCharacters.indexOf(c);
-    value = value * 83 + digit;
-  }
-
-  return value;
-};
-
-const decodeRGB = int => ({
-  r: Math.max(0, (int >> 16)),
-  g: Math.max(0, (int >> 8) & 255),
-  b: Math.max(0, (int & 255)),
-});
-
-const luma = ({ r, g, b }) => 0.2126 * r + 0.7152 * g + 0.0722 * b;
-
-const adjustColor = ({ r, g, b }, lumaThreshold = 100) => {
-  let delta;
-
-  if (luma({ r, g, b }) >= lumaThreshold) {
-    delta = -80;
-  } else {
-    delta = 80;
-  }
-
-  return {
-    r: r + delta,
-    g: g + delta,
-    b: b + delta,
-  };
+const hex2rgba = (hex, alpha = 1) => {
+  const [r, g, b] = hex.match(/\w\w/g).map(x => parseInt(x, 16));
+  return `rgba(${r}, ${g}, ${b}, ${alpha})`;
 };
 
 const messages = defineMessages({
@@ -157,7 +38,9 @@ class Audio extends React.PureComponent {
     fullscreen: PropTypes.bool,
     intl: PropTypes.object.isRequired,
     cacheWidth: PropTypes.func,
-    blurhash: PropTypes.string,
+    backgroundColor: PropTypes.string,
+    foregroundColor: PropTypes.string,
+    accentColor: PropTypes.string,
   };
 
   state = {
@@ -169,7 +52,6 @@ class Audio extends React.PureComponent {
     muted: false,
     volume: 0.5,
     dragging: false,
-    color: { r: 255, g: 255, b: 255 },
   };
 
   setPlayerRef = c => {
@@ -207,10 +89,6 @@ class Audio extends React.PureComponent {
     }
   }
 
-  setBlurhashCanvasRef = c => {
-    this.blurhashCanvas = c;
-  }
-
   setCanvasRef = c => {
     this.canvas = c;
 
@@ -222,41 +100,13 @@ class Audio extends React.PureComponent {
   componentDidMount () {
     window.addEventListener('scroll', this.handleScroll);
     window.addEventListener('resize', this.handleResize, { passive: true });
-
-    if (!this.props.blurhash) {
-      const img = new Image();
-      img.crossOrigin = 'anonymous';
-      img.onload = () => this.handlePosterLoad(img);
-      img.src = this.props.poster;
-    } else {
-      this._setColorScheme();
-      this._decodeBlurhash();
-    }
   }
 
   componentDidUpdate (prevProps, prevState) {
-    if (prevProps.poster !== this.props.poster && !this.props.blurhash) {
-      const img = new Image();
-      img.crossOrigin = 'anonymous';
-      img.onload = () => this.handlePosterLoad(img);
-      img.src = this.props.poster;
-    }
-
-    if (prevState.blurhash !== this.state.blurhash || prevProps.blurhash !== this.props.blurhash) {
-      this._setColorScheme();
-      this._decodeBlurhash();
+    if (prevProps.src !== this.props.src || this.state.width !== prevState.width || this.state.height !== prevState.height) {
+      this._clear();
+      this._draw();
     }
-
-    this._clear();
-    this._draw();
-  }
-
-  _decodeBlurhash () {
-    const context = this.blurhashCanvas.getContext('2d');
-    const pixels = decode(this.props.blurhash || this.state.blurhash, 32, 32);
-    const outputImageData = new ImageData(pixels, 32, 32);
-
-    context.putImageData(outputImageData, 0, 0);
   }
 
   componentWillUnmount () {
@@ -425,31 +275,6 @@ class Audio extends React.PureComponent {
     this.analyser = analyser;
   }
 
-  handlePosterLoad = image => {
-    const canvas  = document.createElement('canvas');
-    const context = canvas.getContext('2d');
-
-    canvas.width  = image.width;
-    canvas.height = image.height;
-
-    context.drawImage(image, 0, 0);
-
-    const inputImageData = context.getImageData(0, 0, image.width, image.height);
-    const blurhash = encode(inputImageData.data, image.width, image.height, 4, 4);
-
-    this.setState({ blurhash });
-  }
-
-  _setColorScheme () {
-    const blurhash     = this.props.blurhash || this.state.blurhash;
-    const averageColor = decodeRGB(decode83(blurhash.slice(2, 6)));
-
-    this.setState({
-      color: adjustColor(averageColor),
-      darkText: luma(averageColor) >= 165,
-    });
-  }
-
   handleDownload = () => {
     fetch(this.props.src).then(res => res.blob()).then(blob => {
       const element   = document.createElement('a');
@@ -609,8 +434,8 @@ class Audio extends React.PureComponent {
 
     const gradient = this.canvasContext.createLinearGradient(dx1, dy1, dx2, dy2);
 
-    const mainColor = `rgb(${this.state.color.r}, ${this.state.color.g}, ${this.state.color.b})`;
-    const lastColor = `rgba(${this.state.color.r}, ${this.state.color.g}, ${this.state.color.b}, 0)`;
+    const mainColor = this._getAccentColor();
+    const lastColor = hex2rgba(mainColor, 0);
 
     gradient.addColorStop(0, mainColor);
     gradient.addColorStop(0.6, mainColor);
@@ -632,17 +457,25 @@ class Audio extends React.PureComponent {
     return Math.floor(this._getRadius() + (PADDING * this._getScaleCoefficient()));
   }
 
-  _getColor () {
-    return `rgb(${this.state.color.r}, ${this.state.color.g}, ${this.state.color.b})`;
+  _getAccentColor () {
+    return this.props.accentColor || '#ffffff';
+  }
+
+  _getBackgroundColor () {
+    return this.props.backgroundColor || '#000000';
+  }
+
+  _getForegroundColor () {
+    return this.props.foregroundColor || '#ffffff';
   }
 
   render () {
     const { src, intl, alt, editable } = this.props;
-    const { paused, muted, volume, currentTime, duration, buffer, darkText, dragging } = this.state;
+    const { paused, muted, volume, currentTime, duration, buffer, dragging } = this.state;
     const progress = (currentTime / duration) * 100;
 
     return (
-      <div className={classNames('audio-player', { editable, 'with-light-background': darkText })} ref={this.setPlayerRef} style={{ width: '100%', height: this.props.fullscreen ? '100%' : (this.state.height || this.props.height) }} onMouseEnter={this.handleMouseEnter} onMouseLeave={this.handleMouseLeave}>
+      <div className={classNames('audio-player', { editable })} ref={this.setPlayerRef} style={{ backgroundColor: this._getBackgroundColor(), color: this._getForegroundColor(), width: '100%', height: this.props.fullscreen ? '100%' : (this.state.height || this.props.height) }} onMouseEnter={this.handleMouseEnter} onMouseLeave={this.handleMouseLeave}>
         <audio
           src={src}
           ref={this.setAudioRef}
@@ -654,24 +487,15 @@ class Audio extends React.PureComponent {
         />
 
         <canvas
-          className='audio-player__background'
-          onClick={this.togglePlay}
-          width='32'
-          height='32'
-          style={{ width: this.state.width, height: this.state.height, position: 'absolute', top: 0, left: 0 }}
-          ref={this.setBlurhashCanvasRef}
-          aria-label={alt}
-          title={alt}
           role='button'
-          tabIndex='0'
-        />
-
-        <canvas
           className='audio-player__canvas'
           width={this.state.width}
           height={this.state.height}
-          style={{ width: '100%', position: 'absolute', top: 0, left: 0, pointerEvents: 'none' }}
+          style={{ width: '100%', position: 'absolute', top: 0, left: 0 }}
           ref={this.setCanvasRef}
+          onClick={this.togglePlay}
+          title={alt}
+          aria-label={alt}
         />
 
         <img
@@ -684,12 +508,12 @@ class Audio extends React.PureComponent {
 
         <div className='video-player__seek' onMouseDown={this.handleMouseDown} ref={this.setSeekRef}>
           <div className='video-player__seek__buffer' style={{ width: `${buffer}%` }} />
-          <div className='video-player__seek__progress' style={{ width: `${progress}%`, backgroundColor: this._getColor() }} />
+          <div className='video-player__seek__progress' style={{ width: `${progress}%`, backgroundColor: this._getAccentColor() }} />
 
           <span
             className={classNames('video-player__seek__handle', { active: dragging })}
             tabIndex='0'
-            style={{ left: `${progress}%`, backgroundColor: this._getColor() }}
+            style={{ left: `${progress}%`, backgroundColor: this._getAccentColor() }}
           />
         </div>
 
@@ -700,12 +524,12 @@ class Audio extends React.PureComponent {
               <button type='button' title={intl.formatMessage(muted ? messages.unmute : messages.mute)} aria-label={intl.formatMessage(muted ? messages.unmute : messages.mute)} onClick={this.toggleMute}><Icon id={muted ? 'volume-off' : 'volume-up'} fixedWidth /></button>
 
               <div className={classNames('video-player__volume', { active: this.state.hovered })} ref={this.setVolumeRef} onMouseDown={this.handleVolumeMouseDown}>
-                <div className='video-player__volume__current' style={{ width: `${volume * 100}%`, backgroundColor: this._getColor() }} />
+                <div className='video-player__volume__current' style={{ width: `${volume * 100}%`, backgroundColor: this._getAccentColor() }} />
 
                 <span
                   className={classNames('video-player__volume__handle')}
                   tabIndex='0'
-                  style={{ left: `${volume * 100}%`, backgroundColor: this._getColor() }}
+                  style={{ left: `${volume * 100}%`, backgroundColor: this._getAccentColor() }}
                 />
               </div>
 
diff --git a/app/javascript/mastodon/features/status/components/detailed_status.js b/app/javascript/mastodon/features/status/components/detailed_status.js
index f7d0c9bd4..b1ae0b2cc 100644
--- a/app/javascript/mastodon/features/status/components/detailed_status.js
+++ b/app/javascript/mastodon/features/status/components/detailed_status.js
@@ -126,7 +126,9 @@ class DetailedStatus extends ImmutablePureComponent {
             alt={attachment.get('description')}
             duration={attachment.getIn(['meta', 'original', 'duration'], 0)}
             poster={attachment.get('preview_url') || status.getIn(['account', 'avatar_static'])}
-            blurhash={attachment.get('blurhash')}
+            backgroundColor={attachment.getIn(['meta', 'colors', 'background'])}
+            foregroundColor={attachment.getIn(['meta', 'colors', 'foreground'])}
+            accentColor={attachment.getIn(['meta', 'colors', 'accent'])}
             height={150}
           />
         );
diff --git a/app/javascript/mastodon/features/ui/components/audio_modal.js b/app/javascript/mastodon/features/ui/components/audio_modal.js
index 2300453d7..dc033434e 100644
--- a/app/javascript/mastodon/features/ui/components/audio_modal.js
+++ b/app/javascript/mastodon/features/ui/components/audio_modal.js
@@ -59,8 +59,11 @@ export default class AudioModal extends ImmutablePureComponent {
             src={media.get('url')}
             alt={media.get('description')}
             duration={media.getIn(['meta', 'original', 'duration'], 0)}
-            height={135}
-            preload
+            height={150}
+            poster={media.get('preview_url') || status.getIn(['account', 'avatar_static'])}
+            backgroundColor={media.getIn(['meta', 'colors', 'background'])}
+            foregroundColor={media.getIn(['meta', 'colors', 'foreground'])}
+            accentColor={media.getIn(['meta', 'colors', 'accent'])}
           />
         </div>
 
diff --git a/app/javascript/mastodon/features/ui/components/focal_point_modal.js b/app/javascript/mastodon/features/ui/components/focal_point_modal.js
index 7d1509f71..8112e3b9e 100644
--- a/app/javascript/mastodon/features/ui/components/focal_point_modal.js
+++ b/app/javascript/mastodon/features/ui/components/focal_point_modal.js
@@ -17,6 +17,7 @@ import CharacterCounter from 'mastodon/features/compose/components/character_cou
 import { length } from 'stringz';
 import { Tesseract as fetchTesseract } from 'mastodon/features/ui/util/async-components';
 import GIFV from 'mastodon/components/gifv';
+import { me } from 'mastodon/initial_state';
 
 const messages = defineMessages({
   close: { id: 'lightbox.close', defaultMessage: 'Close' },
@@ -26,6 +27,7 @@ const messages = defineMessages({
 
 const mapStateToProps = (state, { id }) => ({
   media: state.getIn(['compose', 'media_attachments']).find(item => item.get('id') === id),
+  account: state.getIn(['accounts', me]),
 });
 
 const mapDispatchToProps = (dispatch, { id }) => ({
@@ -78,6 +80,7 @@ class FocalPointModal extends ImmutablePureComponent {
 
   static propTypes = {
     media: ImmutablePropTypes.map.isRequired,
+    account: ImmutablePropTypes.map.isRequired,
     onClose: PropTypes.func.isRequired,
     intl: PropTypes.object.isRequired,
   };
@@ -233,7 +236,7 @@ class FocalPointModal extends ImmutablePureComponent {
   }
 
   render () {
-    const { media, intl, onClose } = this.props;
+    const { media, intl, account, onClose } = this.props;
     const { x, y, dragging, description, dirty, detecting, progress } = this.state;
 
     const width  = media.getIn(['meta', 'original', 'width']) || null;
@@ -325,7 +328,10 @@ class FocalPointModal extends ImmutablePureComponent {
                 src={media.get('url')}
                 duration={media.getIn(['meta', 'original', 'duration'], 0)}
                 height={150}
-                preload
+                poster={media.get('preview_url') || account.get('avatar_static')}
+                backgroundColor={media.getIn(['meta', 'colors', 'background'])}
+                foregroundColor={media.getIn(['meta', 'colors', 'foreground'])}
+                accentColor={media.getIn(['meta', 'colors', 'accent'])}
                 editable
               />
             )}
diff --git a/app/javascript/mastodon/locales/en.json b/app/javascript/mastodon/locales/en.json
index 9d89e31e8..2a6808b05 100644
--- a/app/javascript/mastodon/locales/en.json
+++ b/app/javascript/mastodon/locales/en.json
@@ -113,7 +113,7 @@
   "confirmations.block.confirm": "Block",
   "confirmations.block.message": "Are you sure you want to block {name}?",
   "confirmations.delete.confirm": "Delete",
-  "confirmations.delete.message": "Are you sure you want to delete this status?",
+  "confirmations.delete.message": "Are you sure you want to delete this toot?",
   "confirmations.delete_list.confirm": "Delete",
   "confirmations.delete_list.message": "Are you sure you want to permanently delete this list?",
   "confirmations.domain_block.confirm": "Block entire domain",
@@ -124,7 +124,7 @@
   "confirmations.mute.explanation": "This will hide posts from them and posts mentioning them, but it will still allow them to see your posts and follow you.",
   "confirmations.mute.message": "Are you sure you want to mute {name}?",
   "confirmations.redraft.confirm": "Delete & redraft",
-  "confirmations.redraft.message": "Are you sure you want to delete this status and re-draft it? Favourites and boosts will be lost, and replies to the original post will be orphaned.",
+  "confirmations.redraft.message": "Are you sure you want to delete this toot and re-draft it? Favourites and boosts will be lost, and replies to the original post will be orphaned.",
   "confirmations.reply.confirm": "Reply",
   "confirmations.reply.message": "Replying now will overwrite the message you are currently composing. Are you sure you want to proceed?",
   "confirmations.unfollow.confirm": "Unfollow",
@@ -137,7 +137,7 @@
   "directory.local": "From {domain} only",
   "directory.new_arrivals": "New arrivals",
   "directory.recently_active": "Recently active",
-  "embed.instructions": "Embed this status on your website by copying the code below.",
+  "embed.instructions": "Embed this toot on your website by copying the code below.",
   "embed.preview": "Here is what it will look like:",
   "emoji_button.activity": "Activity",
   "emoji_button.custom": "Custom",
@@ -166,7 +166,7 @@
   "empty_column.hashtag": "There is nothing in this hashtag yet.",
   "empty_column.home": "Your home timeline is empty! Visit {public} or use search to get started and meet other users.",
   "empty_column.home.public_timeline": "the public timeline",
-  "empty_column.list": "There is nothing in this list yet. When members of this list post new statuses, they will appear here.",
+  "empty_column.list": "There is nothing in this list yet. When members of this list post new toots, they will appear here.",
   "empty_column.lists": "You don't have any lists yet. When you create one, it will show up here.",
   "empty_column.mutes": "You haven't muted any users yet.",
   "empty_column.notifications": "You don't have any notifications yet. Interact with others to start the conversation.",
@@ -223,12 +223,12 @@
   "keyboard_shortcuts.back": "to navigate back",
   "keyboard_shortcuts.blocked": "to open blocked users list",
   "keyboard_shortcuts.boost": "to boost",
-  "keyboard_shortcuts.column": "to focus a status in one of the columns",
+  "keyboard_shortcuts.column": "to focus a toot in one of the columns",
   "keyboard_shortcuts.compose": "to focus the compose textarea",
   "keyboard_shortcuts.description": "Description",
   "keyboard_shortcuts.direct": "to open direct messages column",
   "keyboard_shortcuts.down": "to move down in the list",
-  "keyboard_shortcuts.enter": "to open status",
+  "keyboard_shortcuts.enter": "to open toot",
   "keyboard_shortcuts.favourite": "to favourite",
   "keyboard_shortcuts.favourites": "to open favourites list",
   "keyboard_shortcuts.federated": "to open federated timeline",
@@ -269,7 +269,7 @@
   "lists.subheading": "Your lists",
   "load_pending": "{count, plural, one {# new item} other {# new items}}",
   "loading_indicator.label": "Loading...",
-  "media_gallery.toggle_visible": "Hide media",
+  "media_gallery.toggle_visible": "Hide {number, plural, one {image} other {images}}",
   "missing_indicator.label": "Not found",
   "missing_indicator.sublabel": "This resource could not be found",
   "mute_modal.hide_notifications": "Hide notifications from this user?",
@@ -297,13 +297,13 @@
   "navigation_bar.preferences": "Preferences",
   "navigation_bar.public_timeline": "Federated timeline",
   "navigation_bar.security": "Security",
-  "notification.favourite": "{name} favourited your status",
+  "notification.favourite": "{name} favourited your toot",
   "notification.follow": "{name} followed you",
   "notification.follow_request": "{name} has requested to follow you",
   "notification.mention": "{name} mentioned you",
   "notification.own_poll": "Your poll has ended",
   "notification.poll": "A poll you have voted in has ended",
-  "notification.reblog": "{name} boosted your status",
+  "notification.reblog": "{name} boosted your toot",
   "notifications.clear": "Clear notifications",
   "notifications.clear_confirmation": "Are you sure you want to permanently clear all your notifications?",
   "notifications.column_settings.alert": "Desktop notifications",
@@ -334,7 +334,7 @@
   "poll.voted": "You voted for this answer",
   "poll_button.add_poll": "Add a poll",
   "poll_button.remove_poll": "Remove poll",
-  "privacy.change": "Adjust status privacy",
+  "privacy.change": "Adjust toot privacy",
   "privacy.direct.long": "Visible for mentioned users only",
   "privacy.direct.short": "Direct",
   "privacy.private.long": "Visible for followers only",
@@ -361,9 +361,9 @@
   "report.target": "Reporting {target}",
   "search.placeholder": "Search",
   "search_popout.search_format": "Advanced search format",
-  "search_popout.tips.full_text": "Simple text returns statuses you have written, favourited, boosted, or have been mentioned in, as well as matching usernames, display names, and hashtags.",
+  "search_popout.tips.full_text": "Simple text returns toots you have written, favourited, boosted, or have been mentioned in, as well as matching usernames, display names, and hashtags.",
   "search_popout.tips.hashtag": "hashtag",
-  "search_popout.tips.status": "status",
+  "search_popout.tips.status": "toot",
   "search_popout.tips.text": "Simple text returns matching display names, usernames and hashtags",
   "search_popout.tips.user": "user",
   "search_results.accounts": "People",
@@ -372,7 +372,7 @@
   "search_results.statuses_fts_disabled": "Searching toots by their content is not enabled on this Mastodon server.",
   "search_results.total": "{count, number} {count, plural, one {result} other {results}}",
   "status.admin_account": "Open moderation interface for @{name}",
-  "status.admin_status": "Open this status in the moderation interface",
+  "status.admin_status": "Open this toot in the moderation interface",
   "status.block": "Block @{name}",
   "status.bookmark": "Bookmark",
   "status.cancel_reblog_private": "Unboost",
@@ -390,7 +390,7 @@
   "status.more": "More",
   "status.mute": "Mute @{name}",
   "status.mute_conversation": "Mute conversation",
-  "status.open": "Expand this status",
+  "status.open": "Expand this toot",
   "status.pin": "Pin on profile",
   "status.pinned": "Pinned toot",
   "status.read_more": "Read more",
@@ -433,7 +433,7 @@
   "trends.trending_now": "Trending now",
   "ui.beforeunload": "Your draft will be lost if you leave Mastodon.",
   "upload_area.title": "Drag & drop to upload",
-  "upload_button.label": "Add media ({formats})",
+  "upload_button.label": "Add images, a video or an audio file",
   "upload_error.limit": "File upload limit exceeded.",
   "upload_error.poll": "File upload not allowed with polls.",
   "upload_form.audio_description": "Describe for people with hearing loss",
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index d483af220..fe9f98d95 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -5314,36 +5314,31 @@ a.status-card.compact:hover {
 
   .video-player__volume::before,
   .video-player__seek::before {
-    background: rgba($white, 0.15);
+    background: currentColor;
+    opacity: 0.15;
   }
 
-  &.with-light-background {
-    color: $black;
-
-    .video-player__volume::before,
-    .video-player__seek::before {
-      background: rgba($black, 0.15);
-    }
-
-    .video-player__seek__buffer {
-      background: rgba($black, 0.2);
-    }
+  .video-player__seek__buffer {
+    background: currentColor;
+    opacity: 0.2;
+  }
 
-    .video-player__buttons button {
-      color: rgba($black, 0.75);
+  .video-player__buttons button {
+    color: currentColor;
+    opacity: 0.75;
 
-      &:active,
-      &:hover,
-      &:focus {
-        color: $black;
-      }
+    &:active,
+    &:hover,
+    &:focus {
+      color: currentColor;
+      opacity: 1;
     }
+  }
 
-    .video-player__time-sep,
-    .video-player__time-total,
-    .video-player__time-current {
-      color: $black;
-    }
+  .video-player__time-sep,
+  .video-player__time-total,
+  .video-player__time-current {
+    color: currentColor;
   }
 
   .video-player__seek::before,
diff --git a/app/models/media_attachment.rb b/app/models/media_attachment.rb
index 61581138e..cc0a1ab27 100644
--- a/app/models/media_attachment.rb
+++ b/app/models/media_attachment.rb
@@ -40,6 +40,13 @@ class MediaAttachment < ApplicationRecord
   VIDEO_FILE_EXTENSIONS = %w(.webm .mp4 .m4v .mov).freeze
   AUDIO_FILE_EXTENSIONS = %w(.ogg .oga .mp3 .wav .flac .opus .aac .m4a .3gp .wma).freeze
 
+  META_KEYS = %i(
+    focus
+    colors
+    original
+    small
+  ).freeze
+
   IMAGE_MIME_TYPES             = %w(image/jpeg image/png image/gif).freeze
   VIDEO_MIME_TYPES             = %w(video/webm video/mp4 video/quicktime video/ogg).freeze
   VIDEO_CONVERTIBLE_MIME_TYPES = %w(video/webm video/quicktime).freeze
@@ -165,7 +172,7 @@ class MediaAttachment < ApplicationRecord
 
   has_attached_file :thumbnail,
                     styles: THUMBNAIL_STYLES,
-                    processors: [:lazy_thumbnail, :blurhash_transcoder],
+                    processors: [:lazy_thumbnail, :blurhash_transcoder, :color_extractor],
                     convert_options: GLOBAL_CONVERT_OPTIONS
 
   validates_attachment_content_type :thumbnail, content_type: IMAGE_MIME_TYPES
@@ -216,7 +223,7 @@ class MediaAttachment < ApplicationRecord
 
     x, y = (point.is_a?(Enumerable) ? point : point.split(',')).map(&:to_f)
 
-    meta = (file.instance_read(:meta) || {}).with_indifferent_access.slice(:focus, :original, :small)
+    meta = (file.instance_read(:meta) || {}).with_indifferent_access.slice(*META_KEYS)
     meta['focus'] = { 'x' => x, 'y' => y }
 
     file.instance_write(:meta, meta)
@@ -338,7 +345,7 @@ class MediaAttachment < ApplicationRecord
   end
 
   def populate_meta
-    meta = (file.instance_read(:meta) || {}).with_indifferent_access.slice(:focus, :original, :small)
+    meta = (file.instance_read(:meta) || {}).with_indifferent_access.slice(*META_KEYS)
 
     file.queued_for_write.each do |style, file|
       meta[style] = style == :small || image? ? image_geometry(file) : video_metadata(file)
diff --git a/app/views/media/player.html.haml b/app/views/media/player.html.haml
index 3d308ee69..1d0374897 100644
--- a/app/views/media/player.html.haml
+++ b/app/views/media/player.html.haml
@@ -11,6 +11,6 @@
     %video{ autoplay: 'autoplay', muted: 'muted', loop: 'loop' }
       %source{ src: @media_attachment.file.url(:original) }
 - elsif @media_attachment.audio?
-  = react_component :audio, src: @media_attachment.file.url(:original), poster: full_asset_url(@media_attachment.account.avatar_static_url), width: 670, height: 380, fullscreen: true, alt: @media_attachment.description, duration: @media_attachment.file.meta.dig(:original, :duration) do
+  = react_component :audio, src: @media_attachment.file.url(:original), poster: @media_attachment.thumbnail.present? ? @media_attachment.thumbnail.url : @media_attachment.account.avatar_static_url, backgroundColor: @media_attachment.file.meta.dig('colors', 'background'), foregroundColor: @media_attachment.file.meta.dig('colors', 'foreground'), accentColor: @media_attachment.file.meta.dig('colors', 'accent'), width: 670, height: 380, fullscreen: true, alt: @media_attachment.description, duration: @media_attachment.file.meta.dig(:original, :duration) do
     %audio{ controls: 'controls' }
       %source{ src: @media_attachment.file.url(:original) }
diff --git a/app/views/statuses/_detailed_status.html.haml b/app/views/statuses/_detailed_status.html.haml
index d10017db9..dce122607 100644
--- a/app/views/statuses/_detailed_status.html.haml
+++ b/app/views/statuses/_detailed_status.html.haml
@@ -33,7 +33,7 @@
         = render partial: 'statuses/attachment_list', locals: { attachments: status.media_attachments }
     - elsif status.media_attachments.first.audio?
       - audio = status.media_attachments.first
-      = react_component :audio, src: audio.file.url(:original), poster: audio.thumbnail.present? ? audio.thumbnail.url : status.account.avatar_static_url, blurhash: audio.blurhash, width: 670, height: 380, alt: audio.description, duration: audio.file.meta.dig('original', 'duration') do
+      = react_component :audio, src: audio.file.url(:original), poster: audio.thumbnail.present? ? audio.thumbnail.url : status.account.avatar_static_url, backgroundColor: audio.file.meta.dig('colors', 'background'), foregroundColor: audio.file.meta.dig('colors', 'foreground'), accentColor: audio.file.meta.dig('colors', 'accent'), width: 670, height: 380, alt: audio.description, duration: audio.file.meta.dig('original', 'duration') do
         = render partial: 'statuses/attachment_list', locals: { attachments: status.media_attachments }
     - else
       = react_component :media_gallery, height: 380, sensitive: status.sensitive?, standalone: true, autoplay: autoplay, media: status.media_attachments.map { |a| ActiveModelSerializers::SerializableResource.new(a, serializer: REST::MediaAttachmentSerializer).as_json } do
diff --git a/app/views/statuses/_simple_status.html.haml b/app/views/statuses/_simple_status.html.haml
index a84f51e3b..b31072676 100644
--- a/app/views/statuses/_simple_status.html.haml
+++ b/app/views/statuses/_simple_status.html.haml
@@ -39,7 +39,7 @@
         = render partial: 'statuses/attachment_list', locals: { attachments: status.media_attachments }
     - elsif status.media_attachments.first.audio?
       - audio = status.media_attachments.first
-      = react_component :audio, src: audio.file.url(:original), poster: audio.thumbnail.present? ? audio.thumbnail.url : status.account.avatar_static_url, blurhash: audio.blurhash, width: 610, height: 343, alt: audio.description, duration: audio.file.meta.dig('original', 'duration') do
+      = react_component :audio, src: audio.file.url(:original), poster: audio.thumbnail.present? ? audio.thumbnail.url : status.account.avatar_static_url, backgroundColor: audio.file.meta.dig('colors', 'background'), foregroundColor: audio.file.meta.dig('colors', 'foreground'), accentColor: audio.file.meta.dig('colors', 'accent'), width: 610, height: 343, alt: audio.description, duration: audio.file.meta.dig('original', 'duration') do
         = render partial: 'statuses/attachment_list', locals: { attachments: status.media_attachments }
     - else
       = react_component :media_gallery, height: 343, sensitive: status.sensitive?, autoplay: autoplay, media: status.media_attachments.map { |a| ActiveModelSerializers::SerializableResource.new(a, serializer: REST::MediaAttachmentSerializer).as_json } do
diff --git a/app/workers/post_process_media_worker.rb b/app/workers/post_process_media_worker.rb
index a904f35b1..24201101c 100644
--- a/app/workers/post_process_media_worker.rb
+++ b/app/workers/post_process_media_worker.rb
@@ -32,7 +32,7 @@ class PostProcessMediaWorker
 
     media_attachment.file.reprocess!(:original)
     media_attachment.processing = :complete
-    media_attachment.file_meta = previous_meta.merge(media_attachment.file_meta).with_indifferent_access.slice(:focus, :original, :small)
+    media_attachment.file_meta = previous_meta.merge(media_attachment.file_meta).with_indifferent_access.slice(*MediaAttachment::META_KEYS)
     media_attachment.save
   rescue ActiveRecord::RecordNotFound
     true
diff --git a/config/application.rb b/config/application.rb
index a3c37b042..ad6cf82d7 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -11,6 +11,7 @@ require_relative '../lib/redis/namespace_extensions'
 require_relative '../lib/paperclip/url_generator_extensions'
 require_relative '../lib/paperclip/attachment_extensions'
 require_relative '../lib/paperclip/media_type_spoof_detector_extensions'
+require_relative '../lib/paperclip/transcoder_extensions'
 require_relative '../lib/paperclip/lazy_thumbnail'
 require_relative '../lib/paperclip/gif_transcoder'
 require_relative '../lib/paperclip/video_transcoder'
diff --git a/config/locales/bn.yml b/config/locales/bn.yml
index 928d5426f..ad613f721 100644
--- a/config/locales/bn.yml
+++ b/config/locales/bn.yml
@@ -23,7 +23,7 @@ bn:
     hosted_on: এই মাস্টাডনটি আছে %{domain} এ
     instance_actor_flash: 'এই অ্যাকাউন্টটি ভার্চুয়াল এক্টর যা নিজে কোনও সার্ভারের প্রতিনিধিত্ব করতে ব্যবহৃত হয় এবং কোনও পৃথক ব্যবহারকারী নয়। এটি ফেডারেশনের উদ্দেশ্যে ব্যবহৃত হয় এবং আপনি যদি পুরো ইনস্ট্যান্স ব্লক করতে না চান তবে অবরুদ্ধ করা উচিত নয়, সেক্ষেত্রে আপনার ডোমেন ব্লক ব্যবহার করা উচিত।
 
-      '
+'
     learn_more: বিস্তারিত জানুন
     privacy_policy: গোপনীয়তা নীতি
     see_whats_happening: কী কী হচ্ছে দেখুন
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 2cae0a3e3..23bed812e 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -21,9 +21,7 @@ en:
     federation_hint_html: With an account on %{instance} you'll be able to follow people on any Mastodon server and beyond.
     get_apps: Try a mobile app
     hosted_on: Mastodon hosted on %{domain}
-    instance_actor_flash: |
-      This account is a virtual actor used to represent the server itself and not any individual user.
-      It is used for federation purposes and should not be blocked unless you want to block the whole instance, in which case you should use a domain block.
+    instance_actor_flash: This account is a virtual actor used to represent the server itself and not any individual user. It is used for federation purposes and should not be blocked unless you want to block the whole instance, in which case you should use a domain block.
     learn_more: Learn more
     privacy_policy: Privacy policy
     see_whats_happening: See what's happening
diff --git a/config/locales/eu.yml b/config/locales/eu.yml
index 3e92dcd36..1a654ec9b 100644
--- a/config/locales/eu.yml
+++ b/config/locales/eu.yml
@@ -23,7 +23,7 @@ eu:
     hosted_on: Mastodon %{domain} domeinuan ostatatua
     instance_actor_flash: 'Kontu hau zerbitzaria bera adierazten duen aktore birtual bat da, ez norbanako bat. Federaziorako erabiltzen da eta ez zenuke blokeatu behar instantzia osoa blokeatu nahi ez baduzu, kasu horretan domeinua blokeatzea egokia litzateke.
 
-      '
+'
     learn_more: Ikasi gehiago
     privacy_policy: Pribatutasun politika
     see_whats_happening: Ikusi zer gertatzen ari den
diff --git a/config/locales/gl.yml b/config/locales/gl.yml
index 77c5ec911..d2ad1bc45 100644
--- a/config/locales/gl.yml
+++ b/config/locales/gl.yml
@@ -23,7 +23,7 @@ gl:
     hosted_on: Mastodon aloxado en %{domain}
     instance_actor_flash: 'Esta conta é un actor virtual utilizado para representar ao servidor e non a unha usuaria individual. Utilízase para propósitos de federación e non debería estar bloqueada a menos que queiras bloquear a toda a instancia, en tal caso deberías utilizar o bloqueo do dominio.
 
-      '
+'
     learn_more: Saber máis
     privacy_policy: Política de privacidade
     see_whats_happening: Ver o que está a acontecer
diff --git a/config/locales/hu.yml b/config/locales/hu.yml
index 1f5d2a738..32c28c3e5 100644
--- a/config/locales/hu.yml
+++ b/config/locales/hu.yml
@@ -23,7 +23,7 @@ hu:
     hosted_on: "%{domain} Mastodon szerver"
     instance_actor_flash: 'Ez a fiók egy virtuális szereplő, mely magát a szervert reprezentálja, nem egy felhasználót. Ez a föderáció támogatására készült, ezért nem szabad blokkolni, hacsak egy teljes szervert nem akarsz kitiltani, amire persze a domain blokkolása jobb megoldás.
 
-      '
+'
     learn_more: Tudj meg többet
     privacy_policy: Adatvédelmi szabályzat
     see_whats_happening: Nézd, mi történik
diff --git a/config/locales/id.yml b/config/locales/id.yml
index 1c648e28f..d55abce59 100644
--- a/config/locales/id.yml
+++ b/config/locales/id.yml
@@ -23,7 +23,7 @@ id:
     hosted_on: Mastodon dihosting di %{domain}
     instance_actor_flash: 'Akun ini adalah aktor virtual yang dipakai untuk merepresentasikan server, bukan pengguna individu. Ini dipakai untuk tujuan federasi dan jangan diblokir kecuali Anda ingin memblokir seluruh instansi, yang seharusnya Anda pakai blokir domain.
 
-      '
+'
     learn_more: Pelajari selengkapnya
     privacy_policy: Kebijakan Privasi
     see_whats_happening: Lihat apa yang sedang terjadi
diff --git a/config/locales/ja.yml b/config/locales/ja.yml
index 77011e2b4..e3b6bc234 100644
--- a/config/locales/ja.yml
+++ b/config/locales/ja.yml
@@ -23,7 +23,7 @@ ja:
     hosted_on: Mastodon hosted on %{domain}
     instance_actor_flash: 'このアカウントはサーバーそのものを示す仮想的なもので、特定のユーザーを示すものではありません。これはサーバーの連合のために使用されます。サーバー全体をブロックするときは、このアカウントをブロックせずに、ドメインブロックを使用してください。
 
-      '
+'
     learn_more: もっと詳しく
     privacy_policy: プライバシーポリシー
     see_whats_happening: やりとりを見てみる
diff --git a/config/locales/nl.yml b/config/locales/nl.yml
index 6df792495..7ab26c4ba 100644
--- a/config/locales/nl.yml
+++ b/config/locales/nl.yml
@@ -23,7 +23,7 @@ nl:
     hosted_on: Mastodon op %{domain}
     instance_actor_flash: 'Dit account is een virtuel actor die wordt gebruikt om de server zelf te vertegenwoordigen en is geen individuele gebruiker. Het wordt voor federatiedoeleinden gebruikt en moet niet worden geblokkeerd, tenzij je de hele server wil blokkeren. In zo''n geval dien je echter een domeinblokkade te gebruiken.
 
-      '
+'
     learn_more: Meer leren
     privacy_policy: Privacybeleid
     see_whats_happening: Kijk wat er aan de hand is
diff --git a/config/locales/no.yml b/config/locales/no.yml
index 13834b428..ddd404848 100644
--- a/config/locales/no.yml
+++ b/config/locales/no.yml
@@ -23,7 +23,7 @@
     hosted_on: Mastodon driftet på %{domain}
     instance_actor_flash: 'Denne brukeren er en virtuell aktør brukt til å representere selve serveren og ingen individuell bruker. Det brukes til foreningsformål og bør ikke blokkeres med mindre du vil blokkere hele instansen, hvor domeneblokkering bør brukes i stedet.
 
-      '
+'
     learn_more: Lær mer
     privacy_policy: Privatlivsretningslinjer
     see_whats_happening: Se hva som skjer
diff --git a/config/locales/sv.yml b/config/locales/sv.yml
index 43c4a2a7a..c2de32f97 100644
--- a/config/locales/sv.yml
+++ b/config/locales/sv.yml
@@ -23,7 +23,7 @@ sv:
     hosted_on: Mastodon-värd på %{domain}
     instance_actor_flash: 'Detta konto är en virtuell agent som används för att representera servern själv och inte någon individuell användare. Det används av sammanslutningsskäl och ska inte blockeras såvitt du inte vill blockera hela instansen, och för detta fall ska domänblockering användas.
 
-      '
+'
     learn_more: Lär dig mer
     privacy_policy: Integritetspolicy
     see_whats_happening: Se vad som händer
diff --git a/config/locales/uk.yml b/config/locales/uk.yml
index 799922272..6ff21b068 100644
--- a/config/locales/uk.yml
+++ b/config/locales/uk.yml
@@ -23,7 +23,7 @@ uk:
     hosted_on: Mastodon розміщено на %{domain}
     instance_actor_flash: 'Цей обліковий запис є віртуальною особою, яка використовується для представлення самого сервера, а не певного користувача. Він використовується для потреб федерації і не повинен бути заблокований, якщо тільки ви не хочете заблокувати весь сервер, у цьому випадку ви повинні скористатися блокуванням домену.
 
-      '
+'
     learn_more: Дізнатися більше
     privacy_policy: Політика приватності
     see_whats_happening: Погляньте, що відбувається
diff --git a/config/locales/vi.yml b/config/locales/vi.yml
index d20902459..853a1ee13 100644
--- a/config/locales/vi.yml
+++ b/config/locales/vi.yml
@@ -23,7 +23,7 @@ vi:
     hosted_on: "%{domain} vận hành nhờ Mastodon"
     instance_actor_flash: 'Tài khoản này là một tác nhân ảo được sử dụng để đại diện cho chính máy chủ chứ không phải bất kỳ người dùng cá nhân nào. Nó được sử dụng cho mục đích liên kết và không nên bị chặn trừ khi bạn muốn chặn toàn bộ máy chủ.
 
-      '
+'
     learn_more: Tìm hiểu thêm
     privacy_policy: Chính sách bảo mật
     see_whats_happening: Xem những gì đang xảy ra
diff --git a/config/locales/zh-CN.yml b/config/locales/zh-CN.yml
index cb55e5bf4..f93f51af3 100644
--- a/config/locales/zh-CN.yml
+++ b/config/locales/zh-CN.yml
@@ -23,7 +23,7 @@ zh-CN:
     hosted_on: 一个在 %{domain} 上运行的 Mastodon 实例
     instance_actor_flash: '这个账号是个虚拟帐号，不代表任何用户，只用来代表服务器本身。它用于和其它服务器互通，所以不应该被封禁，除非你想封禁整个实例。但是想封禁整个实例的时候，你应该用域名封禁。
 
-      '
+'
     learn_more: 了解详情
     privacy_policy: 隐私政策
     see_whats_happening: 看一看现在在发生什么
diff --git a/lib/paperclip/color_extractor.rb b/lib/paperclip/color_extractor.rb
new file mode 100644
index 000000000..44fe5ff1d
--- /dev/null
+++ b/lib/paperclip/color_extractor.rb
@@ -0,0 +1,189 @@
+# frozen_string_literal: true
+
+require 'mime/types/columnar'
+
+module Paperclip
+  class ColorExtractor < Paperclip::Processor
+    MIN_CONTRAST        = 3.0
+    FREQUENCY_THRESHOLD = 0.01
+
+    def make
+      depth = 8
+
+      # Determine background palette by getting colors close to the image's edge only
+      background_palette = palette_from_histogram(convert(':source -alpha set -gravity Center -region 75%x75% -fill None -colorize 100% -alpha transparent +region -format %c -colors :quantity -depth :depth histogram:info:', source: File.expand_path(@file.path), quantity: 10, depth: depth), 10)
+
+      # Determine foreground palette from the whole image
+      foreground_palette = palette_from_histogram(convert(':source -format %c -colors :quantity -depth :depth histogram:info:', source: File.expand_path(@file.path), quantity: 10, depth: depth), 10)
+
+      background_color   = background_palette.first || foreground_palette.first
+      foreground_colors  = []
+
+      return @file if background_color.nil?
+
+      max_distance       = 0
+      max_distance_color = nil
+
+      foreground_palette.each do |color|
+        distance = ColorDiff.between(background_color, color)
+
+        if distance > max_distance
+          max_distance = distance
+          max_distance_color = color
+        end
+      end
+
+      foreground_colors << max_distance_color unless max_distance_color.nil?
+
+      max_distance       = 0
+      max_distance_color = nil
+
+      foreground_palette.each do |color|
+        distance = ColorDiff.between(background_color, color)
+        contrast = w3c_contrast(background_color, color)
+
+        if distance > max_distance && contrast >= MIN_CONTRAST && !foreground_colors.include?(color)
+          max_distance = distance
+          max_distance_color = color
+        end
+      end
+
+      foreground_colors << max_distance_color unless max_distance_color.nil?
+
+      # If we don't have enough colors for accent and foreground, generate
+      # new ones by manipulating the background color
+      (2 - foreground_colors.size).times do |i|
+        foreground_colors << lighten_or_darken(background_color, 35 + (15 * i))
+      end
+
+      # We want the color with the highest contrast to background to be the foreground one,
+      # and the one with the highest saturation to be the accent one
+      foreground_color = foreground_colors.max_by { |rgb| w3c_contrast(background_color, rgb) }
+      accent_color     = foreground_colors.max_by { |rgb| rgb_to_hsl(rgb.r, rgb.g, rgb.b)[1] }
+
+      meta = {
+        colors: {
+          background: rgb_to_hex(background_color),
+          foreground: rgb_to_hex(foreground_color),
+          accent: rgb_to_hex(accent_color),
+        },
+      }
+
+      attachment.instance.file.instance_write(:meta, (attachment.instance.file.instance_read(:meta) || {}).merge(meta))
+
+      @file
+    end
+
+    private
+
+    def w3c_contrast(color1, color2)
+      luminance1 = (0.2126 * color1.r + 0.7152 * color1.g + 0.0722 * color1.b) + 0.05
+      luminance2 = (0.2126 * color2.r + 0.7152 * color2.g + 0.0722 * color2.b) + 0.05
+
+      if luminance1 > luminance2
+        luminance1 / luminance2
+      else
+        luminance2 / luminance1
+      end
+    end
+
+    # rubocop:disable Style/MethodParameterName
+    def rgb_to_hsl(r, g, b)
+      r /= 255.0
+      g /= 255.0
+      b /= 255.0
+      max = [r, g, b].max
+      min = [r, g, b].min
+      h = (max + min) / 2.0
+      s = (max + min) / 2.0
+      l = (max + min) / 2.0
+
+      if max == min
+        h = 0
+        s = 0 # achromatic
+      else
+        d = max - min
+        s = l >= 0.5 ? d / (2.0 - max - min) : d / (max + min)
+
+        case max
+        when r
+          h = (g - b) / d + (g < b ? 6.0 : 0)
+        when g
+          h = (b - r) / d + 2.0
+        when b
+          h = (r - g) / d + 4.0
+        end
+
+        h /= 6.0
+      end
+
+      [(h * 360).round, (s * 100).round, (l * 100).round]
+    end
+
+    def hue_to_rgb(p, q, t)
+      t += 1 if t.negative?
+      t -= 1 if t > 1
+
+      return (p + (q - p) * 6 * t) if t < 1 / 6.0
+      return q if t < 1 / 2.0
+      return (p + (q - p) * (2 / 3.0 - t) * 6) if t < 2 / 3.0
+
+      p
+    end
+
+    def hsl_to_rgb(h, s, l)
+      h /= 360.0
+      s /= 100.0
+      l /= 100.0
+
+      r = 0.0
+      g = 0.0
+      b = 0.0
+
+      if s == 0.0
+        r = l.to_f
+        g = l.to_f
+        b = l.to_f # achromatic
+      else
+        q = l < 0.5 ? l * (1 + s) : l + s - l * s
+        p = 2 * l - q
+        r = hue_to_rgb(p, q, h + 1 / 3.0)
+        g = hue_to_rgb(p, q, h)
+        b = hue_to_rgb(p, q, h - 1 / 3.0)
+      end
+
+      [(r * 255).round, (g * 255).round, (b * 255).round]
+    end
+    # rubocop:enable Style/MethodParameterName
+
+    def lighten_or_darken(color, by)
+      hue, saturation, light = rgb_to_hsl(color.r, color.g, color.b)
+
+      light = begin
+        if light < 50
+          [100, light + by].min
+        else
+          [0, light - by].max
+        end
+      end
+
+      ColorDiff::Color::RGB.new(*hsl_to_rgb(hue, saturation, light))
+    end
+
+    def palette_from_histogram(result, quantity)
+      frequencies       = result.scan(/([0-9]+)\:/).flatten.map(&:to_f)
+      hex_values        = result.scan(/\#([0-9A-Fa-f]{6,8})/).flatten
+      total_frequencies = frequencies.reduce(&:+).to_f
+
+      frequencies.map.with_index { |f, i| [f / total_frequencies, hex_values[i]] }
+                 .sort_by { |r| -r[0] }
+                 .reject { |r| r[1].size == 8 && r[1].end_with?('00') }
+                 .map { |r| ColorDiff::Color::RGB.new(*r[1][0..5].scan(/../).map { |c| c.to_i(16) }) }
+                 .slice(0, quantity)
+    end
+
+    def rgb_to_hex(rgb)
+      '#%02x%02x%02x' % [rgb.r, rgb.g, rgb.b]
+    end
+  end
+end
diff --git a/lib/paperclip/image_extractor.rb b/lib/paperclip/image_extractor.rb
index f5a54d1a5..aab675a06 100644
--- a/lib/paperclip/image_extractor.rb
+++ b/lib/paperclip/image_extractor.rb
@@ -43,7 +43,7 @@ module Paperclip
 
       begin
         cli.run
-      rescue Cocaine::ExitStatusError
+      rescue Cocaine::ExitStatusError, ::Av::CommandError
         dst.close(true)
         return nil
       end
diff --git a/lib/paperclip/transcoder_extensions.rb b/lib/paperclip/transcoder_extensions.rb
new file mode 100644
index 000000000..c0b2447f3
--- /dev/null
+++ b/lib/paperclip/transcoder_extensions.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+module Paperclip
+  module TranscoderExtensions
+    # Prevent the transcoder from modifying our meta hash
+    def initialize(file, options = {}, attachment = nil)
+      meta_value = attachment&.instance_read(:meta)
+      super
+      attachment&.instance_write(:meta, meta_value)
+    end
+  end
+end
+
+Paperclip::Transcoder.prepend(Paperclip::TranscoderExtensions)