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Add animation and media documentation

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@ -145,9 +145,108 @@ and in the example [pict-rs.toml](https://git.asonix.dog/asonix/pict-rs/src/bran
### Improved Animation Support
pict-rs 0.4 only supported `gif` for animated images. This decision had been made due to the
format's poor support for higher-resolution animations with higher framerates compared to silent
videos for a given file size. In pict-rs 0.5, animated images are now supported to the same extent
as still images. Available formats for animated images include apng, avif, gif, and webp (although
not jxl yet).
With this support for more animated file types, pict-rs no longer transcodes larger animations into
videos. Instead, animated images will be left in their original format unless an override is
configured, and the default values for maximum animation dimensions, file size, and frame count have
been increased.
Configuration related to animations has been moved from `[media.gif]` to `[media.animation]` to
better reflect what it applies to.
For all configuration options regarding animations, see the example
[pict-rs.toml](https://git.asonix.dog/asonix/pict-rs/src/branch/main/pict-rs.toml).
### Media Configuration
pict-rs 0.5 splits media configuration further, allowing images, animations, and videos to each
specify their own maximum file size, dimensions, frame counts, etc, in addition to a few global
limits. Relevant sections of configuration are `[media]`, `[media.image]`, `[media.animation]`, and
`[media.video]`.
A list of updated and moved configuration values can be found below.
##### Image Changes
| Old Environment Variable | New Environment Variable |
| ------------------------------ | ------------------------------------- |
| `PICTRS__MEDIA__FORMAT` | `PICTRS__MEDIA__IMAGE__FORMAT` |
| `PICTRS__MEDIA__MAX_WIDTH` | `PICTRS__MEDIA__IMAGE__MAX_WIDTH` |
| `PICTRS__MEDIA__MAX_HEIGHT` | `PICTRS__MEDIA__IMAGE__MAX_HEIGHT` |
| `PICTRS__MEDIA__MAX_AREA` | `PICTRS__MEDIA__IMAGE__MAX_AREA` |
| | `PICTRS__MEDIA__IMAGE__MAX_FILE_SIZE` |
| Old TOML Value | New TOML Value |
| ----------------------- | ----------------------------- |
| `[media] format` | `[media.image] format` |
| `[media] max_width` | `[media.image] max_width` |
| `[media] max_height` | `[media.image] max_height` |
| `[media] max_area` | `[media.image] max_area` |
| | `[media.image] max_file_size` |
##### Animation Changes
| Old Environment Variable | New Environment Variable |
| ------------------------------------- | ------------------------------------------- |
| `PICTRS__MEDIA__GIF__MAX_WIDTH` | `PICTRS__MEDIA__ANIMATION__MAX_WIDTH` |
| `PICTRS__MEDIA__GIF__MAX_HEIGHT` | `PICTRS__MEDIA__ANIMATION__MAX_HEIGHT` |
| `PICTRS__MEDIA__GIF__MAX_AREA` | `PICTRS__MEDIA__ANIMATION__MAX_AREA` |
| `PICTRS__MEDIA__GIF__MAX_FILE_SIZE` | `PICTRS__MEDIA__ANIMATION__MAX_FILE_SIZE` |
| `PICTRS__MEDIA__GIF__MAX_FRAME_COUNT` | `PICTRS__MEDIA__ANIMATION__MAX_FRAME_COUNT` |
| | `PICTRS__MEDIA__ANIMATION__FORMAT` |
| | `PICTRS__MEDIA__ANIMATION__MAX_FILE_SIZE` |
| Old TOML Value | New TOML Value |
| ----------------------------- | ----------------------------------- |
| `[media.gif] max_width` | `[media.animation] max_width` |
| `[media.gif] max_height` | `[media.animation] max_height` |
| `[media.gif] max_area` | `[media.animation] max_area` |
| `[media.gif] max_file_size` | `[media.animation] max_file_size` |
| `[media.gif] max_frame_count` | `[media.animation] max_frame_count` |
| | `[media.animation] format` |
| | `[media.animation] max_file_size` |
##### Video Changes
| Old Environment Variable | New Environment Variable |
| ------------------------------------ | --------------------------------------- |
| `PICTRS__MEDIA__ENABLE_SILENT_VIDEO` | `PICTRS__MEDIA__VIDEO__ENABLE` |
| `PICTRS__MEDIA__ENABLE_FULL_VIDEO` | `PICTRS__MEDIA__VIDEO__ALLOW_AUDIO` |
| `PICTRS__MEDIA__VIDEO_CODEC` | `PICTRS__MEDIA__VIDEO__VIDEO_CODEC` |
| `PICTRS__MEDIA__AUDIO_CODEC` | `PICTRS__MEDIA__VIDEO__AUDIO_CODEC` |
| `PICTRS__MEDIA__MAX_FRAME_COUNT` | `PICTRS__MEDIA__VIDEO__MAX_FRAME_COUNT` |
| `PICTRS__MEDIA__ENABLE_FULL_VIDEO` | `PICTRS__MEDIA__VIDEO__ALLOW_AUDIO` |
| | `PICTRS__MEDIA__VIDEO__MAX_WIDTH` |
| | `PICTRS__MEDIA__VIDEO__MAX_HEIGHT` |
| | `PICTRS__MEDIA__VIDEO__MAX_AREA` |
| | `PICTRS__MEDIA__VIDEO__MAX_FILE_SIZE` |
| Old TOML Value | New TOML Value |
| ----------------------------- | ------------------------------- |
| `[media] enable_silent_video` | `[media.video] enable` |
| `[media] enable_full_video` | `[media.video] allow_audio` |
| `[media] video_codec` | `[media.video] video_codec` |
| `[media] audio_codec` | `[media.video] audio_codec` |
| `[media] max_frame_count` | `[media.video] max_frame_count` |
| `[media] enable_full_video` | `[media.video] allow_audio` |
| | `[media.video] max_width` |
| | `[media.video] max_height` |
| | `[media.video] max_area` |
| | `[media.video] max_file_size` |
Note that although each media type now includes its own `MAX_FILE_SIZE` configuration, the
`PICTRS__MEDIA__MAX_FILE_SIZE` value still exists as a global limit for any file type.
In addition to all the configuration options mentioned above, there are now individual quality
settings that can be configured for each image and animation type, as well as for video files.
Please see the [pict-rs.toml](./pict-rs.toml) file for more information.
For all configuration options regarding media, see the example
[pict-rs.toml](https://git.asonix.dog/asonix/pict-rs/src/branch/main/pict-rs.toml).
### Improved Collision Resistance