Add pixel size to tooltip and gif support with FFmpeg for avatar upload

[kimsible]

Description

• Add max resolution 192x192 (after resize) in tooltip avatar upload
• Add gif support for avatar with FFmpeg process

Related issues

Gif support only : #3299

Has this been tested?

- [ ] 👍 yes, I added tests to the test suite Didn't found any unit test for Image processing

• 👍 yes, light tests as follows are enough

I just live tested, does it need unit test @Chocobozzz ?

Screenshots

[Chocobozzz]

Add gif support for avatar as a copy, Jimp does not support gif resize

I'm sorry but we can't just copy unknown files from users, without resize or compression

[kimsible]

Add gif support for avatar as a copy, Jimp does not support gif resize

I'm sorry but we can't just copy unknown files from users, without resize or compression

@Chocobozzz I didn't make it to compress and resize gif with Jimp, would you help ?

[rigelk]

@kimsible you might need a plugin for Jimp to bring it support of gifs, like https://github.com/jtlapp/gifwrap

[kimsible]

@kimsible you might need a plugin for Jimp to bring it support of gifs, like https://github.com/jtlapp/gifwrap

@rigelk thanks, you mean with need a new filter / action server side to handle it ? also how can we filter the extensions list constant ?

Edit : Don't hesitate to propose changes to include filters server side

[Chocobozzz]

ffmpeg might me able to resize a gif

[kimsible]

Thanks @Chocobozzz @rigelk for the tips, it now uses FFmpeg to process GIF :

• Reduce to 15 FPS
• Scale to maximum avatar size

Cons :

• It does not handle GIF transparency but white is the default color of FFmpeg, so transparent GIF will fit to the PeeTube design.

[Chocobozzz]

Please next time add unit tests.