How to export webm with codec VP8

kukuro

Spine exports webm with codec VP9 by default, while its compatibility is very poor (https://caniuse.com/?search=vp9).
Is it possible to export webm with codec VP8 (https://caniuse.com/?search=vp8)?

kukuro

And by my test, the VP9 performance on Android is terrible. I'm not sure if VP8 will make that better.

Mario

There's currently no way to export to webm using the VP8 codec. VP8 and VP9 compatibility is generally still poor on the web, especially on mobile web browsers. If you want to target mobile web browsers, I suggest going with the MPEG4 codec and a MOV container.

You can also use FFMPEG to convert VP9 webm to VP8.

kukuro

Mario I'm using webm because only webm allows transparent background. Is there any plan to support VP8 codec?

Mario

No, we do not plan supporting VP8, as it's been superseded by VP9. Playback support on Android is likely as poor for VP8 as it is for VP9. The support you underlined in your screenshot is for VP9 over WebRTC, not for playbach via a video element. The codec used by browsers is libvpx which includes support for both VP8 and VP9. As such, support across browsers will be pretty much the same for VP8 and VP9.

As I mentioned earlier, you can try it yourself by exporting to webm from Spine, then using FFMPEG to change the codec from VP9 to VP8. https://trac.ffmpeg.org/wiki/Encode/VP8