Nyanmisaka

`-codec:v:0 copy -codec:a:0 copy` means Remuxing(video repackage). mpv shim needs to update the descriptions.

The actual play method can be obtained from the session. https://github.com/jellyfin/jellyfin-web/blob/e7521162097fdb5b2731510a634339be9a690add/src/components/playback/playmethodhelper.js#L1-L17

Since this option `Allow video playback that requires conversion without re-encoding.` is checked, video remux is taking place as expected. The user was misled by "Transcode" description.

Firefox doesn’t support EAC3 audio.

No. Only a few browsers support AC3 and EAC3, such as Edge and Safari. I think Chrome and Firefox can handle OPUS well, but for the best compatibility you can...

Any chance this can be applied to the left menu of dashboard page? Everything else works fine for me on an iPhone 12.

Sounds it's a duplicate of https://github.com/jellyfin/jellyfin/issues/6957 ?

I have tried to enable MKV direct play for chromium based browser in this PR. https://github.com/jellyfin/jellyfin-web/pull/2289

There’s no Mkv container support in chrome, chrome only support Webm. I’v tried Mp4 with a patched chromium that supports hevc and it plays just fine.

> I believe I saw a PR in the server or ffmpeg repository to fix this recently… Since Jellyfin Media Player is used, no transcoding is involved. Our server fix...