Question / Help OBS exported video issue

M

Mauricio Amaya

New Member
So I've finished recording a few videos as tests, and I keep coming up to an unusual issue.

First off, I'm recording desktop audio and a USB mic (both of which are picked up and recording fine) and I've set OBS to record the screen, again, fine, I've had to disable Aero because otherwise I get really low FPS.

the issue is, I record a short 3 minute clip, and always, at 1:30 minutes in, the audio starts to distort and speed up and crackle and the video freezes, then the video starts playing again at normal speed, but the audio is stuck on being sped up and distorting and crackling, i've tried to change multiple settings and its just getting annoying now.

Can anyone help?

I'm running the following

i5 2400 @ 3.1GHz
16GB DDR3 RAM
GT 630
AT2020 USB condenser mic
7200RPM 1TB Seagate HDD

the inital first minute and a half of recording is beautiful and sounds and looks smooth, but once a minute and a half passes, it all goes to hell :-/

I'm also not trying to record any gameplay, i'm recording Audio Engineer tutorials on a low-CPU usage program with no CPU usage plugins......so i really don't know whats going on :-/

There didn't seem to be any issue with recording, maybe its outputting wrong??

Here's the log of the last recording

https://gist.github.com/05dcb809ba49c6661fb85363191b7091

cheers,

Rico
 
Do you really need six audio tracks? What are you playing it back in, and are you sure it's not mixing all the tracks together?
 
I'm only recording 2 audio tracks, the mono usb mic and the stereo output of the computer. i'm not recording six audio tracks?? I've had to enable another version of the stereo output of the computer purely because they run off two separate drivers sometimes (depends on what I'm doing) but ultimately come out the main audio card hence why there are two "versions" of the desktop stereo output. but thats it.

the thing is that for the first minute and a half, it plays perfectly, I can record the screen, record the output of the computer, record the mic and output of the computer at the exact same time. and it sounds, looks and acts great.

Then, around the 1minute 30sec mark. the audio becomes distorted, crackled and starts to speed up for no apparent reason, the video usually freezes for a minute when this happens and after about 10-15 (sometimes 30) seconds later, the video skips to the part where it should be, meanwhile the audio has gone almost 20-35 seconds faster than the video.

I tried it on VLC player and it does the issue that I mentioned earlier, I've also tried it on 4 other players and the weird thing is that the playback ruler at the bottom doesn't actually move dynamically as it plays the video unlike normally whenever I play a video file it moves dynamically with the movie/video. with the exported video from OBS, it seems like it only "updates" the timeline whenever you bring the ruler back to visible from auto hide.

Because i'm recording multiple audio paths, OBS recommended that I export to .mkv

could exporting to mkv be the actual problem? If I wanted to record just 2 audio tracks so i can play them back separately in editing but are synced to the video, which format/settings should I use?
 
Your log shows six tracks are active, so double check to make sure you only have the two you intend to use active. MKV is unlikely to be the issue. If you're able to upload the video maybe someone has a better idea.
 
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