I have downloaded an old movie in avi firm. The movie is 25.117 fps (which I though was strange). Now, when I play it back as an avi file, the sound is in sync with the picture. However, when I convert this to mpg form, the sound starts to go out of sync with the picture (slightly, at first, but out by about 30 seconds at the end of the movie). I have tried various programs to do this, including TMPG Video XPress 4 , Nero and ConvertX to DVD, all with the same result. I then tried extracting the audio to a wav file, then used Cool Edit, to stretch the audio, without success ( I am not sure if the rate of 'audio slip' is linear throughout the length of the movie). I am sure that it must be possible to convert to mpg, since the avi seems intact, but I can't figure out a way to do it. Does anyone have any suggestions please ??
Check the length of the original avi Vs. the encoded mpeg (in hours, minutes and seconds). Do they differ?
I am toying with the idea of playing the avi file and recording the audio in real time, then combining it with the mpg video track.
I haven't tried this but you can have a look: http://forum.videohelp.com/topic309224.html This is an old thread, any version of GSpot will be fine.
Thanks for your help. I used the g-spot analyzer. The audio is cbr, but it did show that the XVID codec was not installed. I have sence installed that, but unfortunately, it has not solved my problem. I would still really like to sort this one out.
I have to admit that I am rapidly getting out of my depth. As I said before, the avi plays perfectly, but whenver I try to do anything with it (either converting to mpg/dvd, or seperating out the audio), then the audio will not sync with the video. Another method I have tried is to convert the avi to mpg. I then used Womble MPEG Video Wizard. I dragged the mpg to the video time-line and muted the sound. I then dragged the avi file to the audio time-line. The Preview window showed the Preview output to be perfectly in sync. However, when I saved the new file (and multiplexed audio and video), the output file again progressively goes out of sync throughout the duration of the movie. I can't quite see why the preview looks fine but the final muxed output is not. H E L P !
Just to let you know, I have sorted out this problem by laborious means. This is how I did it.... I imported the original avi into TMPG Video Author 4. I did this in 2 minute segments, creating 46 VOB (mpg) files. The audio on each of these sections was very close to being in sync with the video. I then imported the 46 files into Womble MPGEG Video Wizard. Using the audio and video timelines, I then tweaked each segment so that the audio and video aligned exactly (by frame). I then saved the resulting video file as an mpg file. I then authored this to a dvd. Yes, it took a while, but it worked for me, in the end !
