Vegas pro 14 video out of sync

[Graham Bernard]

What are your Project Settings, the media info and render Settings?

* Grazie

Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge

[George Dill]

Project settings:
https://prntscr.com/eow8a5
Media info (not sure exactly what this is but im assuming its this):
https://prntscr.com/eow8ot
Render settings:
https://prntscr.com/eow8ur

Like I said before, the raw video is fine, its just when I place it in sony vegas is when it becomes out of sync.. So I don’t think it would have to do with my render settings.

[George Dill]

Just found out what mediainfo is, sorry.
Mediainfo of the raw video
https://prntscr.com/eow9gm

Mediainfo of the rendered out video
https://prntscr.com/eow9lo

[László Kovács]

Is it’s framerate constant?

Best regards

László Kovács

[George Dill]

Yes it is, if you look at my example video everything is completely smooth.

[László Kovács]

Hi,

I used Vegas for more than 10 years now, and used media from cameras from different manufacturers in different formats. Never had an AV sync issue, so I thought your capture may be variable framerate, which is proven to be wrong in Vegas.
If it’s not, and is really constant, I still would blame the source media (your captured file).
The first finding on a look for obs AV sync:
https://obsproject.com/forum/threads/audio-delay.24644/

Also you can take a look at Wayne’s post about using OBS for targeting Vegas:
https://forums.creativecow.net/thread/24/1012989
After reading you may find the culprit somewhere in your capture settings… 😉

Best regards

László Kovács

[Aaron Star]

No. That’s not what he is asking. Switch Media Info to Text view and list the format parameters.

This is probably a another issue with OBS creating non standard video format, with a variable frame rate mode.

Also why are you capturing at 120fps? Is it to slow stuff down when needed or what? Most streaming services only support 60P, which in fact is actually 59.94. There is a difference between Video standards and PC monitor (gaming) frame rates.

Filmmakers and NLEs like Vegas want constant frame rate video codecs that are very rigid in timing. Mainly for audio drift problems. Does that sound familiar? I would convert that media with FFMPEG, and get it to a constant frame rate, intra frame codec.

You might also test X-Split broadcaster and see if you have the same problems. Last time I recorded something with XSplit, it produced constant frame rate media that edited well in Vegas.

Another question. Are you seeing a rock solid playback counter of 120fps at the bottom of the preview window?

[Graham Bernard]

I agree Aaron.

There’s definitely a mismatch somewhere in the workflow: capture > render > review. Here’s another thing. A possible choking in the preview that’s making the audio lag?

* Grazie

Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge

[László Kovács]

Another question, why the project itself is interlaced?
That should not introduce AV sync issue, though…
120fps is overkill here, but alone that shouldn’t be a problem as well. I had footages from AEEE action cameras before with this framerate (because of the need of slow-mo), and there was no problem. Audio from that cam was in perfect sync with that framerate video ????
A choking in preview shouldn’t be a problem. Yes, the preview goes than with a lag, but the rendered video should be fine anyway…

Best regards

László Kovács

[George Dill]

” No. That’s not what he is asking. Switch Media Info to Text view and list the format parameters.

This is probably a another issue with OBS creating non standard video format, with a variable frame rate mode.

Also why are you capturing at 120fps? Is it to slow stuff down when needed or what? Most streaming services only support 60P, which in fact is actually 59.94. There is a difference between Video standards and PC monitor (gaming) frame rates.

Filmmakers and NLEs like Vegas want constant frame rate video codecs that are very rigid in timing. Mainly for audio drift problems. Does that sound familiar? I would convert that media with FFMPEG, and get it to a constant frame rate, intra frame codec.

You might also test X-Split broadcaster and see if you have the same problems. Last time I recorded something with XSplit, it produced constant frame rate media that edited well in Vegas.

Another question. Are you seeing a rock solid playback counter of 120fps at the bottom of the preview window?”
Im capturing at 120fps so I can slow video down and do edits yes.
Im not trying to stream at all, and if I do I know I would have to switch to 60 or 59.94.

My framerate will sometimes dip down to like 119 with prerendering. If I dont it’ll dip down to like 100-110.

Its not even just the audio.. Like the whole video just cuts off completely in vegas. The raw video is fine, it captures the whole thing. If you would like I could upload the raw video.

If I were to convert the video with FFMPEG would it cause a loss in video quality?
I also noticed that vegas works completely fine with .avi’s but those fill up a bunch of space, and I’d like to avoid using that if possible.