Max Bitrate

[Nazar78]

Is there any chance default bitrate is being hardcoded?

I'm asking because despite not setting any bitrate limit, the TV (RU8000) is able to Direct Play HEVC 100mbps but not 150mbps, a video file from DJI Mini 3 Pro drone. The status info shows exceed max bitrate.

100mbps (Direct Play):

Video Title: 4K HEVC SDR Codec: HEVC Codec tag: hvc1 Profile: Main Level: 150 Resolution: 2688x1512 Aspect ratio: 16:9 Interlaced: No Framerate: 59.94006 Bitrate: 89920 kbps Video range: SDR Video range type: SDR Pixel format: yuv420p Ref frames: 1

150mbps (Transcoded):

Video Title: 4K HEVC SDR Codec: HEVC Codec tag: hvc1 Profile: Main 10 Level: 153 Resolution: 3840x2160 Aspect ratio: 16:9 Interlaced: No Framerate: 59.94006 Bitrate: 152424 kbps Bit depth: 10 bit Video range: SDR Video range type: SDR Pixel format: yuv420p10le Ref frames: 1

[dmitrylyzo]

Probably https://github.com/jellyfin/jellyfin-web/blob/d1bdbd7a168ca3c842ffff184f2524f4a3c883bc/src/scripts/browserDeviceProfile.js#L258-L260

[Nazar78]

That's it. Thanks again @dmitrylyzo.

Any chance you would think we can request to increase this limit? Because there's already demand for it i.e. GoPro Hero 11 at 120mbps and the Mini 3 at 150mbps. If yes I could probably submit a PR maybe up it to 200?

[dmitrylyzo]

I think we can add maxBitrate to the options and pass it from the app depending on 4K/8K.

https://developer.samsung.com/smarttv/develop/specifications/media-specifications/2020-tv-video-specifications.html The bitrate of your video is almost twice the maximum specified bitrate. :thinking: Maybe they just specified guaranteed ones?

[Nazar78]

I think we can add maxBitrate to the options and pass it from the app depending on 4K/8K.

That's beyond my capabilities for now. Anyway I just tested changing the getMaxBitrate to 200000000 then recompile everything again but it's still transcoding.

https://developer.samsung.com/smarttv/develop/specifications/media-specifications/2020-tv-video-specifications.html The bitrate of your video is almost twice the maximum specified bitrate. 🤔 Maybe they just specified guaranteed ones?

I guess you're right but I think the better approach is to auto switch to transcoding if Direct Play fails.

[dmitrylyzo]

If you enable the debug level on the server (/etc/jellyfin/logging.default.json), you can see DeviceProfile in the logs. There is also MaxStaticBitrate: 100000000.

I guess you're right but I think the better approach is to auto switch to transcoding if Direct Play fails.

It will, iirc.

EDIT: Found another place with maximum bitrate: https://github.com/jellyfin-archive/jellyfin-apiclient-javascript/blob/6e3ace3aac1228870fd85b1af41502c3bb688e6d/src/apiClient.js#L4091-L4117 It is hardcoded 140Mbps for LAN. :confused:

[Nazar78]

EDIT: Found another place with maximum bitrate: https://github.com/jellyfin-archive/jellyfin-apiclient-javascript/blob/6e3ace3aac1228870fd85b1af41502c3bb688e6d/src/apiClient.js#L4091-L4117 It is hardcoded 140Mbps for LAN. 😕

Thank you very much for this! I'll test this out soon.

Anyway the 80/100Mbps maximum specified bitrate stated by Samsung probably because of their pathetic 100Mbps ethernet ports, with their Wi-fi 5G at least we can easily achieve above 100Mbps. I've seen the encoding done at 139Mbps above the spec and it's still playable on the TV.

[Nazar78]

The latest 10.8.10 works great @ Direct Play HEVC 150mbps. Not sure what changed as I didn't noticed anything mentioned in the change log?