obsproject / obsproject/obs-studio
Quicksync encoder lacks CBR Padding
Nobody has claimed this yet.
- Dominant language
- C
- Stars
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- Forks
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Description
Operating System Info
Windows 11
Other OS
No response
OBS Studio Version
29.1.0-beta4
OBS Studio Version (Other)
No response
OBS Studio Log URL
https://obsproject.com/logs/z5UdMBmvMFbHsQVB
OBS Studio Crash Log URL
No response
Expected Behavior
Obviously to not drop bitrate so dramatically below target.
Current Behavior
On idle scenes bitrate drops below the CBR target. I tried CBR / LA_CBR modes same behaviour
Steps to Reproduce
- Launch the stream with an idle scene with no movement.
...
Anything else we should know?
An example in twitch inspector of recent stream were I played Hunt Showdown. During idle moments in main menu the bitrate would drop to 1500 kbps and during action would fly back up to intended 8000 kbps.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the OBS log URL and the Quicksync encoder path implicated by the issue. Reproduce using an idle scene in CBR or LA_CBR mode, then verify that the stream no longer drops far below the configured bitrate during idle periods.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- audio-video-rtc
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 32/100