animated webp are not working properly (the transition is done but actual animation is not working)

[beh-10257]

output.txt
rename the file into output.webp or something
than swww img ouput.webp
transition works but the actual image animation doesn't

[beh-10257]

2024-04-04_20-37-38.mp4

a video that pretty much explains everything

[LGFae]

I think you also mentioned you are on the latest version, 0.9.1, right?

[beh-10257]

yes I am

[LGFae]

I honetly believe that image you've sent is simply corrupted somehow. The browser will animate, but neither imv or ffmpeg will.

If you try this animated image instead, swww seems to works fine.

EDIT: scratch that; ffmpeg and imv just don't display animated webp in general. This appears to be a mistake on the image's crate side, but I will have to investigate further.

[beh-10257]

ohhh yeah that seems like it I guess its with the way I convert video into webp thanks
this is solved I guess
I will post here if I find a solution

[beh-10257]

@LGFae I found the issue
in ffmpeg there are two webp encoders

images coming from libwebp work seemlessly in swww
but images coming in libwebp_anim show the formentioned behaviour
FWIW I would say the file size difference is considerable

so the question is (is this supposed to be supported)

[LGFae]

This would be an issue in either ffmpeg, libwebp_anim, or possibly even in the rust image crate, but not here. You'd have to investigate further to figure it out. Seems like a bit of a pain to be honest. I'd recommend just using the larger file and calling it a day.

Alternatively, have you tried generating an APNG image? Maybe the size will be smaller.