Frequent Stuttering/No Video

[matchaman]

Hard to say.  I ran Jellyfin on a Intel J4205 for a while without issue.  It was a bare metal install instead of docker, but that shouldn't make a difference.

Is the CPU overheating or something?

When the transcoding was off and it was just using the CPU, it was maxed at 100% CPU and overheating really badly. After I turned the transcoding to Intel QSV, CPU was no longer at 100% but was still fairly high, and I believe the temperature was still high. I have since added fans to help keep the system cool, and I don't believe heat to be an issue. I am hoping my ZimaCube ships soon to see if a little bit better of a processor helps, otherwise I may try running bare metal on another system.

[matchaman]

Hard to say.  I ran Jellyfin on a Intel J4205 for a while without issue.  It was a bare metal install instead of docker, but that shouldn't make a difference.

Is the CPU overheating or something?

I tried playback on my Pixel 8 Pro running GrapheneOS, and the playback was significantly worse. But looking at the playback info on both my S22 Ultra and Pixel 8 Pro, under Transcoding it says "Reason for transcoding: The video codec is not supported. The Audio codec is not supported." Same thing happened when I went to a 1080P movie or changed the audio track used.

However when I tried the movie on my Nvidia Shield Android TV box, everything played fine. I thought maybe I saw a little bit of an audio/video sync issue, but could be wrong. There was no video information like there is on mobile, so I can't say if the reason for transcoding was the same or not.

[TheDreadPirate]

On your phone, make sure you set the Jellyfin client to use the integrate player instead of the web player.

[matchaman]

On your phone, make sure you set the Jellyfin client to use the integrate player instead of the web player.

When I use the integrated player, when watching 2160P (4K) content, nothing displays, I only get audio.

[TheDreadPirate]

Is it DV7.6? I've found that with that particular DV profile the client/server incorrectly determines the client can direct play it.

[matchaman]

Is it DV7.6?  I've found that with that particular DV profile the client/server incorrectly determines the client can direct play it.

Here is the video information for the 2160P. I believe it is DV7.6? I am guessing that is something I will not be able to change unless using something like handbrake?
Video
Title: 4K HEVC HDR
Codec: HEVC
Profile: Main 10
Level: 153
Resolution: 3840x2160
Aspect ratio: 16:9
Interlaced: No
Framerate: 23.976025
Bitrate: 74749 kbps
Bit depth: 10 bit
Video range: HDR
Video range type: HDR10
DV title: DV Profile 7.6
DV version major: 1
DV version minor: 0
DV profile: 7
DV level: 6
DV rpu preset flag: 1
DV el preset flag: 1
DV bl preset flag: 1
DV bl signal compatibility id: 6
Color space: bt2020nc
Color transfer: smpte2084
Color primaries: bt2020
Pixel format: yuv420p10le
Ref frames: 1

[TheDreadPirate]

Yeah. The behavior you are describing is exactly what happens for me with my DV7.6 content. You have a few of options to get this to behave better. None are great, IMO. Use handbrake to convert it to SDR (I've never tried this). Or manually convert DV 7.6 to the more compatible DV 8.1 (google "dovi_tool"). In theory, DV 8.1 "falls back" to HDR10. DV 8.1 is just HDR10 with dynamic metadata. I'm still trying to figure out the process to just straight up ditch the dynamic metadata and make it HDR10 since AV1 doesn't support DV (I encode everything to AV1).

[matchaman]

Yeah.  The behavior you are describing is exactly what happens for me with my DV7.6 content.  You have a few of options to get this to behave better.  None are great, IMO.  Use handbrake to convert it to SDR (I've never tried this).  Or manually convert DV 7.6 to the more compatible DV 8.1 (google "dovi_tool").  In theory, DV 8.1 "falls back" to HDR10.  DV 8.1 is just HDR10 with dynamic metadata.  I'm still trying to figure out the process to just straight up ditch the dynamic metadata and make it HDR10 since AV1 doesn't support DV (I encode everything to AV1).

Not sure how much I want to be editing/changing the file, as I wanted the raw movie, which is why I left them at all mkv files.

I also have been having issues with the subtitles being just outlines/clear. I was messing around in jellyfin looking at the subtitle settings but can't figure out which ones to change. If I need to open a new forum/thread I can do that.

[TheDreadPirate]

To be clear, no mobile device/streaming device supports DV 7.6. That profile is only supported by Bluray players. You will either need to transcode or you will need to convert it to a profile that some devices support, just as 8.1. But as you've experience, and I've experience, Android devices for, whatever reason, incorrectly determine they can direct play that profile.

If you want to start another thread, that's fine. Or you can continue here.

[matchaman]

To be clear, no mobile device/streaming device supports DV 7.6.  That profile is only supported by Bluray players.  You will either need to transcode or you will need to convert it to a profile that some devices support, just as 8.1.  But as you've experience, and I've experience, Android devices for, whatever reason, incorrectly determine they can direct play that profile.

If you want to start another thread, that's fine.  Or you can continue here.

I'll have to look into converting it a bit. Technically phone/tablet screens aren't 2160P anyways so it may not matter in the end.

Do you have any ideas on why the subtitles are transparent?