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obsproject / obs-studio

OBS Studio - Free and open source software for live streaming and screen recording
https://obsproject.com
GNU General Public License v2.0
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When recording with NVENC AV1 at 1080p@60 every third frame is duplicated #10499

Closed danylofitel closed 3 months ago

danylofitel commented 3 months ago

Operating System Info

Windows 10

Other OS

No response

OBS Studio Version

Other

OBS Studio Version (Other)

30.1.2

OBS Studio Log URL

https://obsproject.com/logs/ibpNaWOh1VhzTCNP

OBS Studio Crash Log URL

No response

Expected Behavior

When recording the video at 1080p@60, each frame should be distinct. When replaying frame by frame, I can validate it.

Current Behavior

When recording with NVENC AV1, the video is at 60 fps, but every third frame is a duplicate of the previous frame.

https://github.com/obsproject/obs-studio/assets/3258785/a112f9bf-1c58-43fe-b0ef-37ccc8b16276

Steps to Reproduce

  1. This reproduces on a system with NVIDIA GeForce RTX 4090 with driver version 552.12.
  2. Create a scene with a video input at 1080p@60.
  3. Under Settings -> Video change Base Resolution and Output Resolution to 1920x1080, set FPS to 60.
  4. Under Output -> Recording set Recording Quality to Indistinguishable Quality, set Recording Format to MPEG-4, Video Encoder to Hardware (NVENC, AV1), Audio Encoder to AAC.
  5. Record a video.
  6. When playing the recorded video, pause it and go frame by frame. You'll notice that every third frame is a duplicate of the previous frame. ...

Anything else we should know?

If you download the attached video and play it frame by frame, you should see the frame duplication issue. Any other encoder (Software x264, NVENC H.264, NVENC HEVC) works fine, the problem is only with NVENC AV1. This very well could be an issue with NVidia encoder.

Penwy commented 3 months ago

On my end, every single frame of this video where the hand is present is unique, there is not a single visibly duplicated frame. This is likely a playback issue on your end. Can you provide an exact frame number that you see as duplicated?

Fenrirthviti commented 3 months ago

This sounds more likely to be a support request rather than a bug report, and we are not currently accepting support requests on GitHub Issues. Please use our forums or Discord for assistance.

Thank you!

danylofitel commented 3 months ago

On my end, every single frame of this video where the hand is present is unique, there is not a single visibly duplicated frame. This is likely a playback issue on your end. Can you provide an exact frame number that you see as duplicated?

You're right, it's a playback issue with MPC-HC, when using VLC I can also see each frame. Thank for checking it so quickly!