OBS (and a few other apps) is doing something to the h.264 files that Premiere just doesn't like. This changed in Premiere sometime during early 2019; it's a bug that was introduced in the app, and is known internally. What isn't clear is why OBS' h.264 files trip Premiere up so badly.
As far as I can tell, there's no setting to change within OBS to get around this. Using a different CODEC such as Ann suggests isn't really a good alternative since it drastically increases the load on the system while recording. The whole idea behind using NVENC while recording is to avoid any loss in in-game frame rate. Using any other CODEC will introduce lag and loss of FPS while playing. No go.
I've been working through some work-arounds outside of OBS recently, and it looks like transcoding from h.264 to h.264 in another application will do the trick. That sucks because it takes a bunch of time. But until this bug is fixed within Premiere, it's one work-around. On the Mac, I can't use Handbrake. For some reason, Handbrake on the Mac refuses to write CFR files, even when you clearly set it to do CFR. So that's out. But it may work on PCs, I simply don't know. On the Mac, I can use Compressor to inhale an OBS-produced h.264 and output another h.264 with the same settings. That new file is inhaled into Premiere immediately without any hiccups.
I can not tell what the difference is between these files that would make the difference. I can look at their output in MediaInfo until my eyes bleed, but there's nothing obvious that jumps out. This is where the devs at Adobe need to jump in and figure out Whiskey Tango Foxtrot is going on.
In the mean:
- Find an app that can transcode h.264-->h.264 and retain CFR
- Just import your OBS-produced files natively and waaaaaaaaaaaaaaaaait. The import will complete, eventually. The longer the file and the slower the processor, the longer it'll take. But it will import.
- (Use Resolve to edit)
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