SOLVED: 4K HEVC on 1080P Roku

[TheDreadPirate]

It depends on how you have your transcoding configured. If you enabled HEVC encoding on the server, and allow HEVC on the client, it should prefer the most efficient codec available. My server transcodes to AV1 on all my clients that support it.

[wenzelja]

It depends on how you have your transcoding configured.  If you enabled HEVC encoding on the server, and allow HEVC on the client, it should prefer the most efficient codec available.  My server transcodes to AV1 on all my clients that support it.

@TheDreadPirate
Is there an easy way to share my settings config so you can analyze whether I have something checked or not checked vs. what should be set?

[TheDreadPirate]

Screenshots of Dashboard > Playback > Transcoding.

[wenzelja]

Screenshots of Dashboard > Playback > Transcoding.

Will do.  May not be until tomorrow evening, but I'll get it to you.

[wenzelja]

Screenshots of Dashboard > Playback > Transcoding.

@TheDreadPirate

Transcoding settings page attached.

I saw in the logs that Jellyfin is transcoding the DTSHD-MA audio to AAC stereo audio instead of just passing It through as I do have a soundbar capable of playing the audio. I think there was a recent thread where someone else had that issue but did not see a resolution to it.

[TheDreadPirate]

You did not enable HEVC encoding, "Allow encoding in HEVC format", so there's that. As for DTS passthrough, I can't find any specifics on what it can passthrough. Their docs just say "DTS". Usually they include WHICH DTS varieties they can passthrough. Nor does it specify if only certain models can.

https://developer.roku.com/docs/specs/me...cations.md

[wenzelja]

@TheDreadPirate

I’ll enable the “Allow Encoding in HEVC format” and see how performance compares.

UPDATE: Enabling HEVC encoding didn't improve performance.  See attached screenshot of Task Manager.  The GPU is is crunching through it, but I'm still getting a lot of freezing, buffering and even crashes back to the main screen.

Here's the transcoding log:
https://pastebin.com/8PM3XDRQ

I was going to upload the latest server log, but Pastebin says there's offensive language or some sort and won't save the paste.  So attached a .txt file copy.

P.S. I think I made the setting change, but I forgot to restart the server. I’ll have try again tomorrow sometime.

[TheDreadPirate]

In terms of transcoding, it is still transcoding faster than real time. ~100FPS. And it is outputting in 1080P H264. So the client is not requestint HEVC?

The bit rate is a bit high, ~48Mbps, but that should NOT be a problem from a decoding perspective on the Roku.

How far away is the Roku situated from your router? And is it connected to your 2.4Ghz network or 5Ghz network?

[wenzelja]

In terms of transcoding, it is still transcoding faster than real time.  ~100FPS.  And it is outputting in 1080P H264.  So the client is not requestint HEVC?

The bit rate is a bit high, ~48Mbps, but that should NOT be a problem from a decoding perspective on the Roku.

How far away is the Roku situated from your router?  And is it connected to your 2.4Ghz network or 5Ghz network?

@TheDreadPirate
I'll check the client app settings again, but I thought I had HEVC set as enabled.

Roku is in the next room within an open floorplan, so there should be good line-of-sight between the router and Roku.

As for the 2.4/5.0GHz question, I will have to dive into the router to see what the Roku is connecting to, as I have "Smart Connect" enabled, so the router decides what gets on 5GHz and what sits on 2.4.

[wenzelja]

@TheDreadPirate
The Roku is definitely sitting on the 2.4GHz band. I'll have to open a guest network on 5GHz to test and see if performance improves.