Examples of broken gifs: https://twitter.com/wannaODIN_/status/1169143681976283136 https://twitter.com/RedTestament/status/1169139822100930561 https://twitter.com/_t3nshi… (read more)
Examples of broken gifs:
As far as I can tell, this is mainly a Windows 7 problem. I have done a fair bit of testing with gifs I've made myself, and while I don't exactly know how gif "encoding" or whatever works, it seems to be a problem with how Twitter converts certain gif versions.
If I make a gif with Aseprite 1.2.13-x64 the gifs do not work, and show up as black. However you can still download them as a video, reupload them, and then they work, which is kinda weird but I assume twitter re-converts the videos into something else.
However if I make the same gif with Aseprite 1.2.9 which is at least a year older, they work on Twitter.
I've seen some references about H.264 Level 5.2 not working on Windows 7, and maybe that might be the issue? If so, is there any way to get Level 5.2 media to play on Windows 7? https://bugzilla.mozilla.org/show_bug.cgi?id=1479203#c10
Using MediaInfo to check the files of the videos in question they say that they are using AVC (Main@L5.2) (CABAC / 4 Ref Frames), while the "gifs" (yes I know that they are just videos on Twitter) that DO work are AVC (Main@L5).