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+-- Forum: Development (https://forum.jellyfin.org/f-development)
+--- Forum: Feature Requests (https://forum.jellyfin.org/f-feature-requests)
+--- Thread: More options for Live TV deinterlacing? (/t-more-options-for-live-tv-deinterlacing)
More options for Live TV deinterlacing? - macthaidhg - 2024-12-20
Certain interlaced Live TV HDHomeRun streams (e.g. BBC One on Freeview HD) are not deinterlacing in Jellyfin. In Android TV clients such as Tivimate, deinterlacing happens OK as I can see the combing/tearing does not occur. Jellyfin is not apply deinterlacing even though it is enabled in playback settings. How does Jellyfin handle deinterlacing? Does it only kick in if there is specific metadata in the input stream? I ran an ffprobe on the input stream and I can't find anything that suggests that the content is interlaced even though it is definitely interlaced! it has "field_order=progressive" which may wrongly give jellyfin the impression that it is progressive?
RE: More options for Live TV deinterlacing? - TheDreadPirate - 2024-12-20
If the stream is direct playing on the client, deinterlacing occurs client side. If the stream is transcoded, the server will deinterlace (the setting you enabled in the Playback menu).
And it should be deinterlacing if the probe indicated it was interlaced.
Can you share your full jellyfin log via pastebin?
RE: More options for Live TV deinterlacing? - marshalleq - 2025-04-18
I came here looking for a solution for this and found a partial one in the process. I have just installed Jellyfin for the first time this weekend and found that I'm getting the above happening (both deinterlaced content on certain channels and staggering panning scenes, non-smooth motion in other directions as well, lagging audio etc on my Mac with Live TV streams but not on my iPad. It works OK with pre-recorded media I've tried so far, which is progressive. The Mac is an M1 the server is a threadripper the tv tuner is an hd homerun. Hardware transcoding didn't make much difference, but I did find in the client settings that de-interlace was disabled, despite it being enabled on the server. So that helped most of it, however it's still a bit laggy in places. I'll keep using it for a while before posting too much about it. These things need to bed down a bit.
EDIT: I eventually found that using Jellyfin Mobile from the Mac App Store doesn't have this issue, whereas Jellyfin Media Player for MacOS does. So that at least is a good workaround.
RE: More options for Live TV deinterlacing? - TheDreadPirate - 2025-04-18
Enabling de-interlacing on the server only applies when the video is transcoding.
Enabling de-interlacing on the client only applies if the server sends interlaced video.
Regarding the lagging and audio/video desync. Can you tell if JMP is CPU decoding or GPU decoding?
RE: More options for Live TV deinterlacing? - marshalleq - 2025-06-05
I came here too as a new installer of Jellyfin. Everything seems to be working well except playback of recorded interlaced content / Live TV. That said, the Apple TV seems to play back the pre-recorded interlaced content fine, while macOS (M1 Pro) and iOS have very laggy audio. Also when watching Live TV, MacOS and iOS seem to handle that fine, while the Apple TV does not. I've tried with and without hardware acceleration which made no noticeable difference. I tired using the beta place in macOS but that wouldn't play at all. It does appear though, unlike the former person in this thread that I'm already running on Jellyfin Mobile Client on Mac OS and it's an issue still. I've just updated the client, I'm not even sure it's a new version but anyway, now live tv is in sync on Mac OS at least. There's a bit going on, I'm going to need to methodically work through this. And disable hardware acceleration again too by the looks.