I'm shooting videos of in-studio artist performances at our radio station, using a Sony DSC-W7 camera, which produces decent MPG video -- certainly good enough for display on our website. However, the camera only records mono audio, so we're also recording the audio in stereo on a PC and saving it in uncompressed WAV format.
I load the video and its associated mono audio track into Vegas 6.0d, and then bring the stereo audio in on another track and line them up. After that's done, the mono track is nuked before the final render.
The problem is that although everything is perfectly in sync at the beginning of the session, by the time I get to the end -- 5 minutes on average -- it's way off ; the stereo track is lagging behind the video (and the mono camera audio track) by a very noticeable amount.
The camera records audio at 32kHz, and that can't be changed. We're recording the stereo WAV at 44.1, and I thought this might have something to do with it. However, I just did a test, recording the WAV at 32K, and I got the same result.
I also got the idea that it might have something to do with the fact that the stereo WAV is being recorded on one PC and then the session is being assembled on another (my notebook). However, for the 32K test, I recorded the stereo WAV on the notebook as well.
Since the camera generates MPG, I assume it's doing on-the-fly audio compression; the PC handling the stereo WAV is not. Could this be where the trouble lies?
Thanks in advance for any help.
I load the video and its associated mono audio track into Vegas 6.0d, and then bring the stereo audio in on another track and line them up. After that's done, the mono track is nuked before the final render.
The problem is that although everything is perfectly in sync at the beginning of the session, by the time I get to the end -- 5 minutes on average -- it's way off ; the stereo track is lagging behind the video (and the mono camera audio track) by a very noticeable amount.
The camera records audio at 32kHz, and that can't be changed. We're recording the stereo WAV at 44.1, and I thought this might have something to do with it. However, I just did a test, recording the WAV at 32K, and I got the same result.
I also got the idea that it might have something to do with the fact that the stereo WAV is being recorded on one PC and then the session is being assembled on another (my notebook). However, for the 32K test, I recorded the stereo WAV on the notebook as well.
Since the camera generates MPG, I assume it's doing on-the-fly audio compression; the PC handling the stereo WAV is not. Could this be where the trouble lies?
Thanks in advance for any help.