ClunkTheBand
New Member
There is thread on here where another user tried to figure this out, but the results seemed inconclusive. Though they did point out that NVIDIA Shadowplay has no issue doing it (so why can't OBS?)
Our scenario is that we're trying to record our studio from multiple angles in order to make a music video. So far we have four seperate 4K cameras feeding in through HDMI and a CamLink Pro, arranged in a 2x2 grid that comes out to a 8K resolution. All of that is working just fine. The issues arise once we press record. So far it's proven impossible to get a stable framerate under a variety of different settings. We've done A LOT of tests. Some details:
* Our graphics card is a 1660 Super, which has the latest generation of NVENC chip
* We're using h.265 since h.264 can't go higher than 4K and ProRes has absurd file sizes
* We're recording using the Lossless preset, which puts the least stress possible on the encoder
* We have a solid state drive
And yet we drop frames.
Nothing within our setup is bottlenecking, and yes we're running OBS as administrator and all our drivers and firmwares are up to date. When I say we're "not bottlenecking" I mean we're not even close. In a lot of our tests, were dropping frames when the CPU/GPU loads are like 27% and 45%. Plenty of headroom. So that makes me think the issue is something with either OBS or possibly the FFmpeg settings. Though I lean towards OBS because we got choppy frames even when I reset OBS and chose their built-in lossless setting (no advanced encoder settings.) In theory, that should be the cleanest slate and lightest load possible (since lossless does the least compression work.) But it still dropped frames.
It just doesn't follow logically that this doesn't work. It should be simple. If Shadowplay can record 8K at 30 frames while someone plays some 8K game or maybe even streams simultaneously then why can't OBS handle recording some simple camera inputs, while we're running no other programs? The PC is just sitting there with 27% CPU load and dropping frames. Very frustrating.
Here is the log file from our latest round of tests - https://obsproject.com/logs/wSPPyuMRZ3QzrgV6 The first two are where we attempted 8K. The rest are where we downscaled to 4K (which also didn't work.)
If anyone has any experience recording 8K, or any advice at all, it would be very appreciated.
Our scenario is that we're trying to record our studio from multiple angles in order to make a music video. So far we have four seperate 4K cameras feeding in through HDMI and a CamLink Pro, arranged in a 2x2 grid that comes out to a 8K resolution. All of that is working just fine. The issues arise once we press record. So far it's proven impossible to get a stable framerate under a variety of different settings. We've done A LOT of tests. Some details:
* Our graphics card is a 1660 Super, which has the latest generation of NVENC chip
* We're using h.265 since h.264 can't go higher than 4K and ProRes has absurd file sizes
* We're recording using the Lossless preset, which puts the least stress possible on the encoder
* We have a solid state drive
And yet we drop frames.
Nothing within our setup is bottlenecking, and yes we're running OBS as administrator and all our drivers and firmwares are up to date. When I say we're "not bottlenecking" I mean we're not even close. In a lot of our tests, were dropping frames when the CPU/GPU loads are like 27% and 45%. Plenty of headroom. So that makes me think the issue is something with either OBS or possibly the FFmpeg settings. Though I lean towards OBS because we got choppy frames even when I reset OBS and chose their built-in lossless setting (no advanced encoder settings.) In theory, that should be the cleanest slate and lightest load possible (since lossless does the least compression work.) But it still dropped frames.
It just doesn't follow logically that this doesn't work. It should be simple. If Shadowplay can record 8K at 30 frames while someone plays some 8K game or maybe even streams simultaneously then why can't OBS handle recording some simple camera inputs, while we're running no other programs? The PC is just sitting there with 27% CPU load and dropping frames. Very frustrating.
Here is the log file from our latest round of tests - https://obsproject.com/logs/wSPPyuMRZ3QzrgV6 The first two are where we attempted 8K. The rest are where we downscaled to 4K (which also didn't work.)
If anyone has any experience recording 8K, or any advice at all, it would be very appreciated.
