Audio out of sync with video (recorded with geforce shadowplay)

Lamppo wrote on 10/15/2020, 3:20 PM

PC Specs:
i7 6700k
ASUS z170 motherboard
32 GB Corsair Vengeance Ram
128 GB SSD which Vegas is installed on (and a few other drives but i don't know if they're important for this)
750w 80+ Gold Corsair PSU
Windows 10 Home

I am using Vegas Movie Studio 16 Platinum, I bought it a few months ago as part of a HumbleBundle (so it's a legitimate copy not pirated or anything). I previously had Vegas Pro 14 and switched to this because of the sale on HumbleBundle. Recently, around late September/early October, I had to reset my Windows due to an unrelated issue I had with my processor. Naturally, doing this wiped all my hard drives so I had to reinstall everything, Vegas included, but I knew that going into it. Within the last week, I got back into editing videos, mostly just funny clips from games with my friends, but I noticed a huge issue right away. My video and audio tracks were a few seconds out of sync. At first I tried to just move my video track behind a few seconds to balance it out, but then while watching the preview window after fixing it at one point in the video, it was out of sync again in another area. As in, I can't really sync up clips because a few seconds later it's out of sync again.
Me being a user of Vegas for a few years now, I thought "idk maybe this is just a stupid preview glitch and when I render it everything will be in sync" which wasn't the case, even after rendering, it showed the same delay that my preview was showing. After seeing the issue persist after resetting the application and my computer alike, I checked to see if my source video was also out of sync, but they are not. The raw footage that I record is perfectly fine in my file explorer, just when I put anything into vegas it becomes out of sync. Mind you, I looked up the issue extensively before posting this, but most threads about audio being out of sync show that the video and audio tracks are physically at different spots on the timeline, but in my case all three tracks (video, computer audio, and microphone audio) are lined up but just completely out of sync regardless. I saw something about variable framerate messing with the timing of the audio, which really makes sense in my head due to the fact that it's out of sync at multiple spots in the video, but I can't really figure out how to fix that. Unfortunately, resetting my computer and having to reinstall Movie Studio also meant that all of my project and template settings were reset, and I don't remember exactly how they were. Any help would be appreciated, the settings on Vegas have always been very confusing to me so if has to do with that I'll need a step by step, but I wanted to see if that would be the case before I just delete it and reinstall it.
Thank you in advance : )


Musicvid wrote on 10/15/2020, 3:48 PM

That is a very typical story of Shadowplay footage in Vegas. It doesn't work and never has (search!). The only thing remarkable is your detail, which is appreciated.

Current suggested OBS settings are here. If you use my "best practice" settings at the end of the thread, be sure to install UT codec on your system.

set wrote on 10/16/2020, 2:57 AM

Hard to test or know this issue...

Anyway... may I know how long is your recording?

and, what time does the unsync situation felt occurred?


I rarely playing games, but I may have to simulate it in my ASUS ROG. The problem is in my previous experiment... no issue. Knowing when the unsync may appear can help how long should I play while recording.

Musicvid, problem with OBS is make the game 'slower'... I heard that on previous experience of OBS... but not sure with today's update of OBS. again, I'm not a 'heavy-gamer'...


What settings do you use in shadowplay?*

*Forgot if there is any settings in shadowplay, or I still able to do it as I already install the Studio driver version.

Musicvid wrote on 10/16/2020, 9:19 AM

@set I believe that "slowness" comes from using default lossy encoders, not OBS itself. I'm told it is "faster" with UT. I certainly don't have the interest in games to test it myself, however.

I've worked with several Shadowplay users, though, and attempts to get it to work right with Vegas have all come up empty.