YouTube Stream No Longer 4K60 with NVENC AV1

T

Th3Birdman

New Member
Thread title.

I have tested this multiple times. When using NVENC AV1, YouTube streams will be forced into 30 fps.

Once I switched back to H.264, the stream was in 4K60.

I don't know if there was an OBS update that has caused this, but all of a sudden, I cannot stream at 60 FPS while using AV1 no matter what bitrate I choose (I normally stream at CBR 50000 bitrate). I've tested this at CBR 28000/60000/40000-- all result in a 4K30 FPS vod/stream.

Is this a known issue?
 
Can confirm, this is an OBS-related problem: Latest version (32.0.1) is causing this issue.

Rolled back to 32.0.0 and NVENC AV1 is streaming in 4k60 as normal again.
 
Log files from both tests (32 and 32.0.1) are needed. One log file test from each version is enough.
 
Sorry, meant to state the rollback was to 31.1.2, as the rollback to 32.0.0 still refuses to output 4K60.

31.1.2 is the latest build that outputs 4K60 using the NVENC AVI encoder.

PaiSand said:
Log files from both tests (32 and 32.0.1) are needed. One log file test from each version is enough.
Click to expand...


I'm just now seeing your message, sorry about that. Here are the logs from 32.0.1 and 31.1.2.
 

Attachments

In 31.1.2 the log files you're using AV1 and in the 32.0.1 you're using H264 (both nvidia encoders)
You said you have issues with the AV1 encoder, so both tests need to be with the same AV1 encoder. Do a test with the AV1 encoder in OBS 32.0.1 and attach it here.
You can use a OBS in portable mode, so you don't mess with your working installation. https://obsproject.com/kb/portable-mode
 
Perhaps I'm misunderstanding you (or something else), but both those log files clearly say the codec being used is AV1:


Screenshot 2025-10-10 182926.png

Screenshot 2025-10-10 183019.png




Did you misread these or am I overlooking something?
 
That part of the log was me changing the settings AFTER the AV1 stream test, so that I could run a different test.

Please look at the screenshots I posted again-- you'll see those were my settings while streaming
 
Each log shows the resolution (3840x2160) and FPS (60) being used, there have been no other reports of this, and streaming with NVENC AV1 to Youtube has been tested as a response to this thread....all seems fine.


chrome_2025-10-14_11-03-04.jpg
 
This is a problem on YouTube's end, and it remains the same in 2026. If you stream with the AV1 60 fps codec, you'll get 60 fps at the time of broadcast, but afterward, YouTube will save the stream as a 30 fps video.
 
I thought it was just me that was having this issue but decided to retest. I did short stream and recording using stream settings. As of now, both show 60fps for 720, 1080 and 1440 but studio shows "Processing will begin within 24 hours" for the stream.
Stream - https://youtube.com/live/jaBipxl-w6A Recording - https://www.youtube.com/watch?v=POVZFrBmgtQ
The log is at https://obsproject.com/logs/a9DalUZ9U4YmK3vO and https://docs.google.com/document/d/...NW7j90V3uKHMWDqKA1CY_k36YZ5xeDRdlCcehlxw0/pub
liveVSrecording-processing.jpg
 
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