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Hey @mysterious-truck-36669, .vp8 isn't a valid container. You'd want to use the IVF container. we have some docs on this here

Hey @dry-elephant-14928! Thanks for an answer! I understand, that I should use

.ivf

as a filename. But what I'm interested in is publishing to the unix socket in vp8 format. And I see that correct socket format according this sources should be:

vp8://...

. That's why you see it in the code snippets. Am I missing something?

ah yes, if you are using socket publishing, then you would pass the socket to livekit-cli as

vp8:///path/to/file.sock

However, FFmpeg would still need to know what is the container format. so you would need to do

-f ivf

@dry-elephant-14928 perfect! That worked for me. Many thanks!