Audio & Video not matched

SueG wrote on 7/3/2008, 6:35 AM

We are a couple of 60ish women learning this whole process of making videos. What an exciting journey and with so much to learn.

We have made some short movies using video from a couple of different Sony cameras, one of them is HD. Everything looks good in the editing process, but after the process of rendering and burning a dvd, the audio and video are sightly off in some parts. (The mouth doesn't match the sound - usually just off 2 to 4 frames)
The message upon rendering says that the audio and video will be compressed.

Could this have something to do with our problem? Before rendering I have been looking at all of the template choices with which to use for the audio and video, and have no clue which to use and what the implications are for each choice.
Can anyone give some advice, please?

Comments

farss wrote on 7/3/2008, 6:41 AM

Recompression although not a good thing should not cause this problem. There's a number of possibilites but first which version of Vegas are you using?

Reason for asking is the later versions have a visual indicator to show you if you've somehow managed to slip sound and vision out of sync. If your audio track turns red then you've somehow gotten it out of sync.

Aside from that it's possible to record sound and vision out of sync although that seems unlikely in your case.

Bob.

kairosmatt wrote on 7/3/2008, 6:47 AM

Where do you get the message that says it will be compressed?

If it is in DVD Architect, then you need to render out of Vegas with the right template.
Choose MPEG2 for DVD. Then there are templates for DVD Architect under that.
You probably want the regular 60i template, not 24p nor widescreen.

I've never had DVDA re-compress anything, but I wouldn't imagine that the sync would be off. Could you give us more details about your process?

kairosmatt

SueG wrote on 7/3/2008, 7:19 AM

Thanks for your quick replies.
I do know that the sound and video are matched during the edit process - the sound tracks and the video tracks are the white matching color, not the unmatched pink color.

When our editing is done in Vegas Pro 8, I go to File - Render as - and do that.
We are wanting the widescreen look - that is where I see some choices for Templates.
After it is rendered, I go to DVD Architect 4.5 and choose Make a DVD.
The next thing I do is Prepare under Make a DVD - that is where I get the message that the video and audio will be compressed.
After the project is prepared - I chose Burn and make the DVD.

So that is my usual process, which could be in error, or redundant, or both. I has seemed to work pretty well, most of the time - but this out of synch problem has occured lately.

johnmeyer wrote on 7/3/2008, 10:56 AM

When our editing is done in Vegas Pro 8, I go to File - Render as - and do that. You need to do two renders: one for video and one for sound. The render for the video MUST be done with the MPEG-2 type, and you MUST choose one of the DVD Architect templates. Under no circumstances should you use the default template. Click on the Custom button and then navigate to the average bitrate and change that to fit the length of your video. For anything 70 minutes or less (total video on the DVD) you should choose 7,200,000 average bitrate (you can go up to 8,000,000, but some people worry about certain players not able to play this -- something I doubt, but I don't have proof one way or the other whether it is a problem). If you have more than 70 minutes of video, use a Bitrate Calculator to determine what number to use for average bitrate. Leave all other bitrate settings alone. See the image below for how the Render As dialog should look for rendering video (assuming you are doing a 4:3 NTSC DVD).

Once the video render has been finished, you then render the audio using the Dolby Digital AC-3 type. The default template is fine.

winrockpost wrote on 7/3/2008, 12:28 PM

.........We are a couple of 60ish women ..............
Rather on the young side for this crowd Sue,,
great advice given as usual, one thing.. are you noticing this issue on computer playback as well as tv set up ?

seen this happen on one tv setup with an analog surround system, every dvd i made seemed to be off just a couple a frames,,don't know the techno reasons why but played fine everywhere but the one set up