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+--- Thread: Dark Bars on certain 4k movies (/t-dark-bars-on-certain-4k-movies)
Dark Bars on certain 4k movies - firas1 - 2024-10-29
Hey folks,
I have this strange issue on my Bravia 9 (Android TV), that some 4k movies have "dark bars" inside the movie.
When watching the exact same file on my AppleTV 4K it does not show them.
I think this issue is somehow created on the internal app, because watching the file on the PC does also not show this bars.
RE: Dark Bars on certain 4k movies - TheDreadPirate - 2024-10-29
I am assuming this movie is Dolby Vision?
RE: Dark Bars on certain 4k movies - firas1 - 2024-10-29
Yes, this movie has DV. But I watched a lot of DV on my Bravia 9 and Jellyfin and never had this issue before.
RE: Dark Bars on certain 4k movies - TheDreadPirate - 2024-10-29
It depends on the movie. Dolby Vision 7 and 8 are both built on top of HDR10 and use additional metadata to dynamically change the HDR10 base layer.
The Dolby Vision metadata can have a different resolution than the base layer, leading to this situation where some component is matching the two together.
Do you know if this is transcoding or direct playing? And what kind of Dolby Vision is this video? I'm assuming Dolby Vision 8.
RE: Dark Bars on certain 4k movies - firas1 - 2024-10-29
Under media info it shows: Dolby Vision Profile 8.1 (HDR10)
It is directly playing without any transcoding.
When watching the exact same file on my AppleTV and also with DV enabled I do not have this issue.
RE: Dark Bars on certain 4k movies - TheDreadPirate - 2024-10-29
What server version are you running? And what version of the Android TV app?
I recall this issue in older versions, that I thought was resolved.
RE: Dark Bars on certain 4k movies - firas1 - 2024-10-29
I run the latest server Version 10.10.0 and I guess the latest AndroidTV version, at least I loaded it from the appstore on my SonyTV.
RE: Dark Bars on certain 4k movies - theguymadmax - 2024-10-29
Can you provide the full media info for movie?
RE: Dark Bars on certain 4k movies - firas1 - 2024-10-30
Video
Titel: 4K HEVC Dolby Vision Profile 8.1 (HDR10)
Codec: HEVC
AVC: No
Profil: Main 10
Level: 153
Auflösung: 3840x1608
Seitenverhältnis: 2.40:1
Anamorph: No
Zeilensprungverfahren: No
Bildrate: 23.976025
Bitrate: 25871 kbps
Bit-Tiefe: 10 bit
Videobereich: HDR
Video-Dynamikumfang: DOVIWithHDR10
DV-Titel: Dolby Vision Profile 8.1 (HDR10)
DV-Hauptversion: 1
DV-Nebenversion: 0
DV-Profil: 8
DV-Level: 6
Flag 'DV rpu' vorhanden: 1
Flag 'DV el' vorhanden: 0
Flag 'DV bl' vorhanden: 1
DV bl Signalkompatibilitäts-ID: 1
Farbraum: bt2020nc
Farbübertragung: smpte2084
Primärfarben: bt2020
Pixelformat: yuv420p10le
Referenz-Frames: 1
RE: Dark Bars on certain 4k movies - TheDreadPirate - 2024-10-30
Can you check a couple settings in the Android TV jellyfin app?
Settings > playback > advanced playback settings > Refresh rate switching
What is that currently set to?