[bug] LG webos + Dolby Vision =⛔ movie stutters then hangs when resuming or skipping ahead

[megosugit]

(bug is still present with 10.9.11)

Hello all,

this specific issue doesn't seem to be addressed in other topics, some are similar but not really, and most of them are more or less inactives.
I have been hoping for a fix since I started with Jellyfin in march, but it hasn't come yet, so I'm trying my luck by opening this issue.

The issue:
When I try to resume a Dolby Vision movie, or if I start over and then skip ahead (more than a few minutes), then the movie will start normally in direct play, but after 10 seconds (sometimes a bit more, I have managed to watch more than 10min once!), it starts to freeze for a few seconds, then can eventually continue for a few more seconds but will start to hang very quickly.
If I don't touch anything for 1 or 2 minutes, I can see the movie "poster" flashing as if the movie stopped and started again, then it resumes the movie but this time it tries to transcode it, which gives bad colors and bad performance.

If I play the movie from the beginning, then it plays perfectly (in direct play).
If I start from the beginning and skip ahead without exceeding ~3min each steps, I can eventually reach the part I need to, but it takes a long time to reach the correct position, and very often, the subtitles become out of sync.
If I skip ahead more than ~3min in one go, then the "freezing/hanging/switching to transcoding" issue happens again when I stop skipping.
After reading the forum, I have disabled the "prefer mp4" option without more success.

The TV (LG G3) is new and my Jellyfin installation too, so I can't tell when the issue started, but it has been doing it since I started to use Jellyfin in march.

Currently, I have given up with Dolby Vision movies, they are unwatchable, unless I know for sure I can watch it in one go without the need to stop and resume next time, which I can very seldom do :(
I can't even disable Dolby Vision (on the TV or in Jellyfin) to avoid this issue and force HDR layer, so I'm pretty stuck whenever there is a DoVi movie.

Please find below a few examples of Video profiles that presents this issue (DV Profile 5 and 8.1 from what I can see):

Video
Title: 4K HEVC HDR
Codec: HEVC
AVC: No
Profile: Main 10
Level: 150
Resolution: 3840x1608
Aspect ratio: 2.40:1
Anamorphic: No
Interlaced: No
Framerate: 23.976025
Bitrate: 24443 kbps
Bit depth: 10 bit
Video range: HDR
Video range type: DOVIWithHDR10
DV title: DV Profile 8.1 (HDR10)
DV version major: 1
DV version minor: 0
DV profile: 8
DV level: 6
DV rpu preset flag: 1
DV el preset flag: 0
DV bl preset flag: 1
DV bl signal compatibility id: 1
Color space: bt2020nc
Color transfer: smpte2084
Color primaries: bt2020
Pixel format: yuv420p10le
Ref frames: 1

Video
Title: 4K HEVC HDR
Codec: HEVC
AVC: No
Profile: Main 10
Level: 150
Resolution: 3840x1606
Aspect ratio: 2.40:1
Anamorphic: No
Interlaced: No
Framerate: 24
Bitrate: 24795 kbps
Bit depth: 10 bit
Video range: HDR
Video range type: DOVIWithHDR10
DV title: DV Profile 8.1 (HDR10)
DV version major: 1
DV version minor: 0
DV profile: 8
DV level: 6
DV rpu preset flag: 1
DV el preset flag: 0
DV bl preset flag: 1
DV bl signal compatibility id: 1
Color space: bt2020nc
Color transfer: smpte2084
Color primaries: bt2020
Pixel format: yuv420p10le
Ref frames: 1

Video
Title: 4K HEVC HDR
Codec: HEVC
AVC: No
Profile: Main 10
Level: 150
Resolution: 3840x2160
Aspect ratio: 16:9
Anamorphic: No
Interlaced: No
Framerate: 24
Bitrate: 11494 kbps
Bit depth: 10 bit
Video range: HDR
Video range type: DOVIWithHDR10
DV title: DV Profile 8.1 (HDR10)
DV version major: 1
DV version minor: 0
DV profile: 8
DV level: 6
DV rpu preset flag: 1
DV el preset flag: 0
DV bl preset flag: 1
DV bl signal compatibility id: 1
Color space: bt2020nc
Color transfer: smpte2084
Color primaries: bt2020
Pixel format: yuv420p10le
Ref frames: 1

Video
Title: 4K - HEVC - HDR
Codec: HEVC
AVC: No
Profile: Main 10
Level: 150
Resolution: 3836x1600
Aspect ratio: 2.40:1
Anamorphic: No
Interlaced: No
Framerate: 23.976025
Bitrate: 16145 kbps
Bit depth: 10 bit
Video range: HDR
Video range type: DOVI
DV title: DV Profile 5
DV version major: 1
DV version minor: 0
DV profile: 5
DV level: 6
DV rpu preset flag: 1
DV el preset flag: 0
DV bl preset flag: 1
DV bl signal compatibility id: 0
Pixel format: yuv420p10le
Ref frames: 1

I'm ready to help as much as I can, please let me know whatever you need and I'll try to get it asap :)

[riberts]

i just tried to play a movie and seem to have the same issue..

[megosugit]

i just tried to play a movie and seem to have the same issue..

what is you TV model ?

[matteocnt92]

same issue on my LG C2

[riberts]

i just tried to play a movie and seem to have the same issue..

what is you TV model ?

LG G2

[Acextreme1982]

Exactly the same issue I am facing now with my LG G3. At first, I thought it was the transcoding problem but on the server side, I can access all the temporary small parts of transcoded videos and I can play those on the server itself just fine using a normal media player, including the parts that hung on my LG G3. It's definitely something else that's the problem.

[megosugit]

I suspect every WebOS users have this issue with Dolby Vision content.
This should get more attention, how can we get this thread more visibility ?

I wonder if it is posted in the right place ?

[Acextreme1982]

Hmmm, well, let's do this: https://jellyfin.org/docs/general/contributing/issues

Under "Searching and Voting" section, it said the following:

If you do find an issue that matches, or closely matches, your issue, please make use of the 👍 reaction to confirm the issue also affects you or that you support the feature request. If you wish, add a comment as well describing your version of the issue or feature use case.

I just did that on your opening post. Everyone, please do that as well.

[Acextreme1982]

I suspect every WebOS users have this issue with Dolby Vision content. This should get more attention, how can we get this thread more visibility ?

I wonder if it is posted in the right place ?

Hmmm, I think you need to do a couple more things. Like:

Bugs should be tagged with [bug] at the beginning of their title.

Check the above link and see what else you need to do right, otherwise it might affect their response.

[megosugit]

Hmmm, well, let's do this: https://jellyfin.org/docs/general/contributing/issues

Under "Searching and Voting" section, it said the following:

If you do find an issue that matches, or closely matches, your issue, please make use of the 👍 reaction to confirm the issue also affects you or that you support the feature request. If you wish, add a comment as well describing your version of the issue or feature use case.

I just did that on your opening post. Everyone, please do that as well.

I did too :p
and I changed the title,
thanks

[megosugit]

@gnattu or @GeorgeH005, is it something you would know about ?

[stromrickard]

I'm currently in the process of switching from Plex to Jellyfin and am reading up on any issues i might encounter and stumbled in here. I have 3 LG OLEDs, 77C1, 65C8 and a 48A1. I was however unable to replicate this on any of them. Resuming and skipping 20-30min causes no issues.
Only point of this post is to indicate that the problem might be more elusive, only certain models, firmware versions, files etc.
In case it matters, none of my TVs are on WiFi.
Tested file:
Titel4K HEVC HDR
KodekHEVC
AVCNo
ProfilMain 10
Nivå150
Upplösning3840x1606
Bildförhållande2.40:1
AnamorfiskNo
SammanflätadNo
Bildfrekvens24
Bithastighet25313 kbps
Bitdjup10 bit
Video-omfångHDR
VideointervallstypDOVIWithHDR10
DV titelDV Profile 8.1 (HDR10)
DV huvudversion1
DV mindre version0
DV profil8
DV nivå6
Förinställd flagga för DV rpu1
Förinställd flagga för DV el0
Förinställd flagga för DV bl1
DV bl signalkompatibilitets-id1
Färgrymdbt2020nc
Färgöverföringsmpte2084
Färgprimärerbt2020
Pixelformatyuv420p10le
Referensbildrutor1