Signal only accepts GIF, PNG and APNG

[boredsquirrel]

I just converted some mp4 videos to gif, but signal doesnt accept gif at all

I then converted to animated webp, which Signal accepts, but the animations are gone.

any idea?

muppets-8.zip

Interesting, I cannot upload a webp but a zip archive?

[boredsquirrel]

So I found the new requirements

https://support.signal.org/hc/en-us/articles/360031836512-Stickers#sticker_reqs

• Non-animated stickers must be a separate PNG or WebP file
• Animated stickers must be a separate APNG file. > > > - Please do not upload GIFs
• Each sticker has a size limit of 300kb
• Animated stickers maximum animation length of 3 seconds
• Stickers resize to 512 x 512 px
  Assign one emoji to each sticker
• Maximum 200 stickers per pack
  Cover must be a 512 x 512 px PNG or WebP file (defaults to first image in sticker pack)
• Title
• Author

I will see if the scripts need updating

[romainricard]

I then converted to animated webp, which Signal accepts, but the animations are gone.

For animated stickers, use APNG without palette (cf. signalapp/Signal-iOS#4611) instead of GIF or webp. I don't remember why I added the webp_to_gif.sh script instead of webp to apng, but hey, this might be useful to someone someday.