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Firefox Finally Introducing Matroska / MKV Playback Support
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this post was submitted on 11 Sep 2025
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Seems important
It's more than important. It's vital to me. I host TV series ripped from discs on my NAS through HTTP and play them back on another machine.
For years I used an extension which sends the URL to VLC for playback via HTTP. Nowadays I got rid of the extension and just drag and drop. That doesn't mark the link as clicked, though. It's hard to track the progress this way.
Ever thought about using a media server like Jellyfin?
I wonder if this will help improve playback on Firefox when using Jellyfin. Maybe it will be able to play more directly and use less server resources, my NAS has relatively modest power.
Plex (I know) with their native app works very well.
Oh, Jellyfin works, don't get me wrong (and it has native apps too). But I welcome every little performance gain. The NAS already starts getting noisy even when it runs just simple docker images on idle.. it can get a bit annoying.
And, from what I heard, Plex tends to have a more resource-intensive idle state due to having more cloud-based features and background tasks.
It feels like using a browser to play video always take wayyyy more resource than a video player. Sending a link to vlc seems like an optimal option to me.
You are not wrong. However, how did MP4 get supported in the first place? Before 2010s, the expected user behaviour was still downloading an MP4 and play with a native player. Why the big gap between MP4 support and MKV support?
How is that vital?
Let's just say there were times I opened the browser after a long day of work just to enjoy an episode or two to prevent mental breakdown.