Question / Help OBS Saving Cam/desktop as single file, editing/reencoding quality loss.

PSiKoTiC

New Member
This is to do with OBS, might be a little out of the scope of OBS but I thought I would give it a swing here.
I'm streaming on twitch (irrelevant), saving my stream with my 1080p 60fps webcam as a source overlaying my desktop/game play. Typical.

I save the streams as files to my local drive I have in a .mp4 wrapper at native resolution (1080p) (no upscaling/downscaling)

I taking the output .mp4 file I load it and edit it with a video editor (Davinci Resolve) my issue has to do with re-encoding and having the 'PiP' (webcam source image) being absolutely destroyed when it's reencoded. (specifically with games with 'glitchy' or 'white noise tv effects' on them.

The h264 codec I'm using when I reencode in a .mp4 wrapper picks up the noise (intentional graphics made to look as white noise) as 'detail' and regardless of the bitrate that I'm encoding the edit in, the codec always degrades the smaller sized webcam image down to dial up modem/realplayer levels. (it's bad) I'm assuming it's over whelmed by detail and trying to compress or stick to a bit rate, drops the average quality of the video.

I've increased bit rate to 'stupid' levels. (6tb for a 25 minute capture) and am still unable to get the webcam picture to not look like some 8 bit rendition of my face on stream.

I cannot seem to find a way to save and encode these videos in a way where you can still tell it's a person in the webcam picture.

Originally I thought if I could copy the webcam video and audio to a separate file that I would beable to do a composite encode over-laying the webcam video and the desktop video capture.

However it doesn't seem to be the case when playing games with a noisy background.

Where as OBS seems to beable to overlay two different sources and encode it using h264 and have webcam view actually beable to be a recognizable person.

I seem to be completely unable to do this.

Has any streamer or OBS user encountered this before? And is there any work around to quality loss from saved files saved by OBS and doing edits to them?

Perhaps I'm missing something obvious?
 
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