* Fix audio and video items in account gallery in web UI
- Fix audio items not using thumbnails
- Fix video items not using custom thumbnails
- Fix video items autoplaying like GIFs
* Change audio and video items in account gallery to autoplay when opened in web UI
* Fix code style issue
* Fix audio player ticks position
* Split visualizer code into own file to comply with license
* Change top-left corner of visualizer always showing peaks, clean up code
- Change audio files to not be stripped of metadata
- Automatically extract cover art from audio if it exists
- Add `thumbnail` parameter to `POST /api/v1/media`, `POST /api/v2/media` and `PUT /api/v1/media/:id`
- Add `icon` to represent it in attachments in ActivityPub
- Fix `preview_url` containing URL of missing missing image when there is no thumbnail instead of null
- Fix duration of audio not being displayed on public pages until the file is loaded
- Fix audio attachments not being represented in OpenGraph tags
- Fix audio being represented as "1 image" in OpenGraph descriptions
- Fix video metadata being overwritten by paperclip-av-transcoder
- Fix embedded player not using Mastodon's UI
- Fix audio/video progress bars not moving smoothly
- Fix audio/video buffered bars not displaying correctly
* Fix audio download button not starting download in web UI
* Fix volume controls on audio and video players in web UI
* Remove download button from video player in web UI
* Fix more visual issues with the audio player
- Add horizontal baseline in the middle of waveform
- Fix audio player colors in light theme
- Use audio element instead of web audio API
- Do not render any bars until the file is loaded
- Do not allow interactions with waveform until the file is loaded
* Fix code style issue
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