29.97 & 59.94fps stutter when streaming to Youtube

[vodamerc]

Hi all,

I have an issue I'm beginning to pull my hair out over.

I am running an M1 Max MacBook Pro with a HD60X capture card bringing in my 59.94fps feed from my camera. I am live streaming to YouTube and therefore stream with the video settings all set to 59.94fps. The preview looks perfectly clean and if I record the output using the stream encoder the recording is also completely smooth.

However the output to YT produces a bad stutter every 15-16 seconds. No matter the device used to playback. If I stream using the exact same settings from my old intel MBP running windows, the stream is completely smooth with no stutter. I have also tried streaming at 60fps but this just makes the problem a lot worse as the computer is doing the 59.94 to 60 conversion (preview looks terrible). The same problem occurs no matter the resolution I stream at, with both the VT H264 & HEVC hardware encoders, and no matter the bitrate. The issue doesn't change no matter the source either, I have streamed a 59.94 test file to YT to show my issue here, link below. Any help would be much appreciated as I am at a dead end here...

Also to note, if I stream a 60fps test file to YouTube at 60fps the stream is completely smooth with zero stutter. My camera however only outputs at 59.94fps.

https://obsproject.com/logs/Na7mXbx4Te28yoWx

- YouTube

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youtu.be

 

[vodamerc]

The stutter I'm referencing is at 0:08s, 0:24s, 0:41s, 0:58s, 1:14s, 1:31s, 1:48s, 2:05s

 

[KalleGrabowski]

Sorry, I can’t offer any help, but I have the exact same problem with an HD60X and a M2 Pro. I was going to try to do the change of the fps within OBS but you just destroyed my hope ;-)
The problem seems to be worse in 1440p in comparison to 1080p.
I use a GH5M2 which also only outputs 59.94.

 

[vodamerc]

Sorry, I can’t offer any help, but I have the exact same problem with an HD60X and a M2 Pro. I was going to try to do the change of the fps within OBS but you just destroyed my hope ;-)
The problem seems to be worse in 1440p in comparison to 1080p.
I use a GH5M2 which also only outputs 59.94.

I've given up on the HD60X and just purchased a Kiloview NDI encoder. Will update on the result.