Question / Help Is it possible to record uncompressed 1080p60fps gameplay?

I was wondering if this was possible. I know you can record lossless but can you record uncompressed and how?
Also, does this cause less strain on my cpu (than lossless/any other codec) since the data is directly being sent to my HDDs. I do plan on getting 4 2TB Seagate Fircudas in raid 0 for uncompressed 1080p60fps recording, might reduce that to 3...
 

Simes

Member
The whole point of lossless compression is that no quality is lost. Otherwise it wouldn't be lossless.
 
The whole point of lossless compression is that no quality is lost. Otherwise it wouldn't be lossless.
Mind = blown haha, but thanks for the relplies, really. So technically it wouldn't matter what lossless codec to use quality wise, but it would matter in regards to which uses less cpu... right?
2) just because I'm curious; does uncompressed recording have any cpu impact?
3) sorry for asking really, but is it possible to record uncompressed rgb with obs?

And yes, I got that I should use lossless, I'm just wondering what the other 'possibilities' are...
 

Simes

Member
Uncompressed recording will use a lot less CPU than compressed recording, you are correct in that. It will also require very fast disks. Going by https://toolstud.io/video/bitrate.php raw 24 bit 1080p60 footage is 2.99 Gb/s. If you wanted to do that, you'd probably be wanting SATA3 SSDs for recording (and big ones).

As far as 3) goes, H.264 is a video compression codec, and OBS records to H.264, so while it is theoretically possible to get H.264 to not compress some things at all I doubt you'd be able to get a completely uncompressed recording. Not 100% on this, of course.
 
Uncompressed recording will use a lot less CPU than compressed recording, you are correct in that. It will also require very fast disks. Going by https://toolstud.io/video/bitrate.php raw 24 bit 1080p60 footage is 2.99 Gb/s. If you wanted to do that, you'd probably be wanting SATA3 SSDs for recording (and big ones).

As far as 3) goes, H.264 is a video compression codec, and OBS records to H.264, so while it is theoretically possible to get H.264 to not compress some things at all I doubt you'd be able to get a completely uncompressed recording. Not 100% on this, of course.
Hi, thank you for all the helpfull info :)
 

Harold

Active Member
OBS Studio's lossless recording profile in simple output mode uses utvideo as its video codec and only uses about 500-600mbit for 1080p60 videos.
 
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