Audio lag in burning?

MikeS

Guest

Hi...anyone have any thoughts or suggestions here?
I’m creating videos on a Cinestream system - the source material is inputted from DV tape. When I’m done editing, I output to DV tape and the master is fine. When I play back the rendered video file in the editor, the playback is fine.

But when I create an MPEG 2 and then burn to DVD, there is often an audio lag on the DVD.

On my most recent trial, some of the scenes on the DVD had no audio lag while others did. But once again, there’s no audio lag at all on the outputted DV master.

I re-inputted the video from the finished DV master, and created a DVD from that, and there was no issue.

Anyone have any ideas? The original audio was all recorded at 48KHz.

zombie666

Guest

I have the exact same problem. I used Appolo DivX to DVD creator. The first 3 videos worked just fine. The latest one I have burned twice with the same results. Audio lag about 1/3 of the way through the movie. The original file works just fine.

StellarDevil

Guest

Well my experience with lags in your audo tends to be a problem with VBR audo rates. Somehow the decoders are to lazy to give the right ammount of data to the encoder, or the encoder only accepts a continuous same ammount of data... wich would make vbr end up lagging and then not lagging . (The audio meets ends with the vid at the end most of the time).

The solution is to first pull off the audio track from the video. Convert it to some non VBR format... WAV? (You don’t want extra quality loss because of countless recompressions) And don’t be fooled. A lot of programs say they are saving the audio in wave format, but all they do is pull the mp3/ac3 or whatever track off the vid and save it to disk. After this u can convert it using your fav program. If you don’t have a fav program for this use the save audio plugin winamp has or something.
With this done you can now link the new audio file to your video and convert it to whatever you want without audio lag. (One more warning some ac3 codexes are buggy and you can end up getting only half of the audio. So alway’s check the audio lenght)

Don’t mins my spelling... It’s all kiddy grade spelling ^_^.

Hope this solves your problem. (U can use VLC player to “stream/rip” the audio to a file)