I've been working on some short video clips in highly compressed mpeg-1 format that will be used on an Enhanced CD (mostly music, with some multimedia stuff in the second session).
I captured the clips directly from my mini-DV camera, and did all the editing and audio sweetening in VV4 and rendered to an AVI file.
I then start a new project and open up the AVI file on its own. Audio/Video sync is perfect in the AVI version. I then try to render this as an MPEG-1 in a small multimedia format for computer, and when I play back the resulting mpg file, the audio and video drift apart fairly quickly. Most of the clips are only around 5 minutes long, but you can already tell by the end of those that the audio/video is not synchronized. Then, there is one clips that's a bit over 12 minutes long, and by the end of that clip, the audio and video are at least 1 full second apart!
This is definitely not acceptable!
I've played around with the render settings, encoding audio at different bit rates and at both 44.1Khz and 48 Khz, and I get pretty much the same results every time.
Usually I just do stuff for DVD and have not had any problems with MPEG-2 renders, but I do recall sometime last year I did a short concert clip (around 6 minutes) in Vegas 3 that I rendered to Real Vido for the web, and the audio/video drifted out of sync with that clip as well.
Is this a Vegas problem? Or is it a problem with highly compressed video/audio formats in general?
Does anyone have a solution?
I need to wrap up this current product to get it into manufacturing as soon as possible, and this is a MAJOR show-stopper right now!
Thanks in advance for any help.
Stephen Sherrard
I captured the clips directly from my mini-DV camera, and did all the editing and audio sweetening in VV4 and rendered to an AVI file.
I then start a new project and open up the AVI file on its own. Audio/Video sync is perfect in the AVI version. I then try to render this as an MPEG-1 in a small multimedia format for computer, and when I play back the resulting mpg file, the audio and video drift apart fairly quickly. Most of the clips are only around 5 minutes long, but you can already tell by the end of those that the audio/video is not synchronized. Then, there is one clips that's a bit over 12 minutes long, and by the end of that clip, the audio and video are at least 1 full second apart!
This is definitely not acceptable!
I've played around with the render settings, encoding audio at different bit rates and at both 44.1Khz and 48 Khz, and I get pretty much the same results every time.
Usually I just do stuff for DVD and have not had any problems with MPEG-2 renders, but I do recall sometime last year I did a short concert clip (around 6 minutes) in Vegas 3 that I rendered to Real Vido for the web, and the audio/video drifted out of sync with that clip as well.
Is this a Vegas problem? Or is it a problem with highly compressed video/audio formats in general?
Does anyone have a solution?
I need to wrap up this current product to get it into manufacturing as soon as possible, and this is a MAJOR show-stopper right now!
Thanks in advance for any help.
Stephen Sherrard