search

ma3uk / obs-qsv-onevpl

obs-qsv11 plugin with oneVPL support
44 stars 1 forks source link

Whether there are lossless presets similar to NV #27

Open DDXDB opened 6 months ago

DDXDB commented 6 months ago

I need to capture lossless video, but I don't know anything about setting up, I used to use Lossless presets for GTX1650 and NV Hevc to record, but the GPU is too slow, so I changed to Arc A380, is there a Lossless presets or suggested Settings for reference?

ma3uk commented 6 months ago

For lossless recording, you can use CQP mode with a value of 15 or lower

DDXDB commented 6 months ago

For lossless recording, you can use CQP mode with a value of 15 or lower

I learned that CQP0 is lossless, but the CQP of qsv can only be set to 1

ma3uk commented 6 months ago

CQP with values below 15 will be visually indistinguishable from lossless, while the file size will be noticeably smaller

DDXDB commented 6 months ago

CQP with values below 15 will be visually indistinguishable from lossless, while the file size will be noticeably smaller

I collected lossless videos to: https://github.com/cirquit/trdrop I'm not sure visually lossless is viable. ：（

DDXDB commented 3 months ago

CQP with values below 15 will be visually indistinguishable from lossless, while the file size will be noticeably smaller

I have confirmed that setting CQP/ICQ to 1 is not lossless, trdrop does not recognize repeated frames and incorrectly identifies a game locked at 30FPS as 120FPS.