Question / Help Testing the new Version - custom ffmpeg

[Schauerland]

Hey,
I'm just testing the new version with multi audio in custom ffmpeg output.

I wonder how (or if) i can set ffmpeg parameters like
bf (bframes) g (gop aka keyframes) or r (rate = framerate)

so as i understand i have to add the encoder settings like key=value
instead of ffmpeg style -key value

stuff like profile, preset etc is working. Is there any workaround because if I cannot set -r premiere always thinks mkv files have 1000 fps :/

heres an example ffmpeg setting i usually use with ffmpeg, how would this look like in the custom ffmpeg parameters?

-c:v h264_nvenc -profile:v high -rc constqp -qp 18 -preset slow -r 60 -g 30 -bf 0

this results in an nvenc encoded h264 with 60fps, keyint of 30 (0.5 seconds) 0 bframes qp 18 with preset slow and profile high

 

[Zidakuh]

For your commandline, use the allready OBS specific parameter value.
Choose h264_nvenc on the dropdown for video encoder under ffmpeg, then use:
profile=high level=4.2 (for 1080p60, use 5.1 or 5.2 for higher resolutions) preset=slow rc=constqp qp=18 and bframes=0
That should theoretically work, however you will be limited to only 1 referenceframe with ffmpeg, compared to the "standard" NVENC encoder for streaming 2 reference frames.
Hope this helps

EDIT:
I have a full list of all available parameters for NVENC here if interested.

 

[Schauerland]

ok so I can only use the encoder specific parameters, not ffmpeg parameters at all like -bf -r or -g?
why is it so complicated?

 

[Zidakuh]

Yes, only encoder specific parameters.
I havr no idea why it is so complicated, trust me, I've cursed it multiple time for the same thing allready

 

[Schauerland]

okay thanks anyway. if they dont fix the 1000fps problem (its correct with default output with h264_nvenc) its useless :/
hoped to use the hevc encoder in the next version but i guess i have to wait further

 

[Zidakuh]

I never had the 1000 fps issue? And I've been testing every "nvenc" option available in ffmpeg. Weird