Audio & Video Misaligned - Why? at DVinfo.net

Go Back   DV Info Net > Windows / PC Post Production Solutions > What Happens in Vegas...

What Happens in Vegas...
...stays in Vegas! This PC-based editing app is a safe bet with these tips.


Reply
 
Thread Tools Search this Thread
Old July 29th, 2009, 08:37 PM   #1
New Boot
 
Join Date: Jul 2009
Location: Ypsilanti, Michigan
Posts: 12
Audio & Video Misaligned - Why?

I'm using Vegas Pro 8.0c, copying part of a clip (video and audio) in "trimmer" and pasting into a video/audio track.

After doing this with several parts, editing by adding crossfades, transitions I play it back and the audio is not lining up with the video.

When I slid them around they moved together. Why/how did they become miasaligned?

Hmm... just tested it again by copying a piece out of trimmer and dumped into a track. It plays back misaligned. Why is this happening?

When I play it in the "Trimmer" window the audio and video line up just fine.
Jeff Vivrette is offline   Reply With Quote
Old July 30th, 2009, 09:10 AM   #2
Trustee
 
Join Date: Oct 2008
Location: Byron Bay, Australia
Posts: 1,142
Do the audio and and video events turn red? If they do it means they have probably been ungrouped.

If the events do not turn red then it means they have not been mis-aligned. I've heard of people having problems of audio drifting with long clips of certian file types or when using they have recorded audio seperately with a double system, but In both these cases I would expect the trimmer to also play back mis-aligned.

Perhaps do a quick edit of a few of the problem clips then render them out. That might tell you if the problem is simply the audio lagging in Vegas playback for some reason or if somewhere in the process something is actually being modified.
John Wiley is offline   Reply With Quote
Old July 30th, 2009, 09:37 AM   #3
Inner Circle
 
Join Date: May 2005
Location: Windsor, ON Canada
Posts: 2,765
Do you have Quantize to Frames enabled?
Mike Kujbida is offline   Reply With Quote
Old July 30th, 2009, 03:55 PM   #4
New Boot
 
Join Date: Jul 2009
Location: Ypsilanti, Michigan
Posts: 12
I'll reply to both posts here:\

Quote:
Do the audio and and video events turn red? If they do it means they have probably been ungrouped.
Nope, they're not red.

Quote:
Perhaps do a quick edit of a few of the problem clips then render them out. That might tell you if the problem is simply the audio lagging in Vegas playback for some reason or if somewhere in the process something is actually being modified.
Rendered and still plays back misaligned.

Quote:
Do you have Quantize to Frames enabled?
I don't know. I tried toggling it but there is no indicator to show if it's on or not. Any advice?
Jeff Vivrette is offline   Reply With Quote
Old July 30th, 2009, 04:10 PM   #5
Inner Circle
 
Join Date: Jun 2005
Location: Cincinnati, OH
Posts: 8,421
What kind of clips are they? Mpeg, avi, etc...did you try bringing the clips in without using the trimmer?
Jeff Harper is offline   Reply With Quote
Old July 30th, 2009, 05:03 PM   #6
Inner Circle
 
Join Date: May 2005
Location: Windsor, ON Canada
Posts: 2,765
Ignore the Quantize to Frames question as I'm sure it's not relevant to your problem.
Not being a Trimmer user though, I'm wondering why you're using it.
I usually just drop a bunch of clips on the timeline and start cutting them up before I start any fancy work on them.
Mike Kujbida is offline   Reply With Quote
Old July 30th, 2009, 05:06 PM   #7
Inner Circle
 
Join Date: Jun 2005
Location: Cincinnati, OH
Posts: 8,421
That's what I'm sayin' Mike. It sure seems a lot faster to me that way. I never understood the need for the trimmer, but I know there are better editors than me that use it. Not knocking it, I just don't get it.
Jeff Harper is offline   Reply With Quote
Old July 30th, 2009, 05:14 PM   #8
Inner Circle
 
Join Date: Nov 2005
Location: Elk Grove CA
Posts: 6,838
Heres my guess. He is using a file that has 30p frame rate, on a 29.97 time line, and sound is being read at 29.97, while video is being timed at 30. I saw this on 5D stuff, coming out of Cineform's NeoScene initially. That changed with fix in NeoScene that retimed everything to 29.97.

OP has to give us more information on what he has set thing up at, and what he has used to capture, etc, etc. etc. Not enough information here to actually try to help him.
__________________
Chris J. Barcellos
Chris Barcellos is offline   Reply With Quote
Old July 30th, 2009, 06:47 PM   #9
Regular Crew
 
Join Date: Apr 2007
Location: Las Vegas, NV
Posts: 45
Sync Offset?

I've has this problem before when my preview device is set up a certain way. In trimmer everything is aligned but when I drop it onto the time line and preview to my HD monitor the sync is off. I fix it by going into Preferences and under the Preview Device tab there is a "Sync Offset" slider. I usally drag it up to about 8 or 9 and then my preview sync is fine.

Just a thought.
Michael Tobias is offline   Reply With Quote
Old July 31st, 2009, 07:43 AM   #10
New Boot
 
Join Date: Jul 2009
Location: Ypsilanti, Michigan
Posts: 12
Let me try to provide some more info so you guy's can help me better.

I filmed with my Canon HV20 set at HDV (PF24).
I captured with NeoScene in order to remove pull down.
NeoScene was set to "Automatically convert to Cineform Intermediate (*.avi) and to "Convert to 24p (NTSC only).
Project properties in Vegas were set to "Match Media" at the start of the project.
The de-interlacing option was set to “interpolate”, and the Quality option set to “Best”.

After editing all clips in the timeline were selected, right click, Switches, Disable Resample.

I rendered to clip like this:
http://eugenia.gnomefiles.org/images/sonyavc.png

Hope I can resolve this. I can't complete about 10 projects as a result.
Jeff Vivrette is offline   Reply With Quote
Old July 31st, 2009, 08:09 AM   #11
Inner Circle
 
Join Date: Jun 2005
Location: Cincinnati, OH
Posts: 8,421
Tried not using the trimmer yet?

Someone tell me, where is the match media setting in project properties, I've not seen it before and can't seem to find it.
Jeff Harper is offline   Reply With Quote
Old July 31st, 2009, 08:31 AM   #12
Inner Circle
 
Join Date: May 2005
Location: Windsor, ON Canada
Posts: 2,765
Quote:
Originally Posted by Jeff Harper View Post
Someone tell me, where is the match media setting in project properties, I've not seen it before and can't seem to find it.
File - Properties.
Click on the Match Media Settings icon (top right, looks like a folder).
Browse to the folder containing the source footage, click on any of them and then click Open.
The video settings in your Project Properties window will now match your source footage.
This can be saved as a preset if desired.
Note: this doesn't match source audio as that has to done separately.
Mike Kujbida is offline   Reply With Quote
Old July 31st, 2009, 08:55 AM   #13
Inner Circle
 
Join Date: Jun 2005
Location: Cincinnati, OH
Posts: 8,421
Thanks Mike, handy feature. I've been using "Aspect Ratio" script, same thing?
Jeff Harper is offline   Reply With Quote
Old July 31st, 2009, 09:01 AM   #14
New Boot
 
Join Date: Jul 2009
Location: Ypsilanti, Michigan
Posts: 12
I did try dragging the avi file onto the timeline and it had the same sync issues.

Man this is frustrating!
Jeff Vivrette is offline   Reply With Quote
Old July 31st, 2009, 09:03 AM   #15
New Boot
 
Join Date: Jul 2009
Location: Ypsilanti, Michigan
Posts: 12
Quote:
Originally Posted by Mike Kujbida View Post
File - Properties.
Click on the Match Media Settings icon (top right, looks like a folder).
Browse to the folder containing the source footage, click on any of them and then click Open.
The video settings in your Project Properties window will now match your source footage.
This can be saved as a preset if desired.
Note: this doesn't match source audio as that has to done separately.
Even if the source audio was recorded on the camera at the same time?

I'm 99% certain the source and project audio are the same sample rate (48k)
Jeff Vivrette is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Windows / PC Post Production Solutions > What Happens in Vegas...

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 04:32 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network