Audio Out Of Sync

[raceman3]

I downloaded video via firewire from my Sony camcorder into ulead videstudio using the default project settings for avi which sets the audio to PCM 33kHz Stereo. (I realized after the fact that I should have changed the DV Encoder to Type 1 and set the audio to 48kHz). When I output the file to NTSC DVD the audio gets set to LPCM 48kHz and there is no place to change it unless I output to AVI using the project settings. The result has the audio a little out of sync when I play the mpg. Is this because the the recorded rate doesn't match the output rate?

[thecoalman]

Not sure why it's out of sync but switching between type 1 or type 2 will make no difference. Your cam recorded it in 33khz which is why it was transferred at that. You can change it to 48khz in your cams menu prior to recording.... at least that is how it was on the sony D8 cam I had.

For a compliant DVD you have to output at 48khz.

Have you tried burning it or is it out of sync in the preview, if it's the preview where it's out of sync try burning a test DVD. I've noticed sync issues using the preview that did not show up on the final DVD.

[rkr1958]

I found that Goldwave is a handy tool for fixing audio, especially, audio / video sync issues. If you wish to give it a go, download a trial version and do this ...

1. Use Goldwave to extract the audio from your original source ... which you said was 33kHz ... It will be extracted as wav
2. Convert the audio to 48kHz.
3. Compare the length of the extracted audio to the length of the MPEG video. If you're having sync problems then usually your video and audio are of different lengths.
4. Use the timewarp function in Goldwave to make the audio the same length as your video.
5. In your authoring program use the video stream from your MPEG encoded file and the audio stream from Goldwave.
6. Author and verify that the audio / video are in sync.

NOTE: I've done this at least 25 to 30 times and, to date, it's always worked for me.

[raceman3]

Thanks for the advice, it appears the problem was in the burning process. I made a new dvd and everything seems to be fine now. I will check the settings in my camcorder to see if I can change audio