This has happened to me twice now, the first time I just thought it was finger trouble but now I'm not so certain.
Its only happened when I'm rendering very long programs and when I'm transcoding.
The first time the program was 2:30:00 long and I was going from PAL to NSTC. I got (after many hours!) an AVI file with an empty audio track. At the time I thought myself an idiot for turning the audio off but later I realised if I done that there wouldn't even be an audio track. Anyways I fixed it without a total re-render, I just rendered out the audio to WAV and bought that into the NTSC AVI and all was well. Due credit to VV there, at no point did it lose sync despite changing the frame rate.
So tonight after 20 hours of hard work VV just finished converting 2 hours of lo res WMV to full res PAL. Shock horror. Again empty audio track!
Go back to original WMV file, render out audio to WAV and audio is there!
This time I will have to sync it up because I'd cut some video off at the beginning but that shouldn't be too hard.
I think and its just a guess, that this may only happen IF I start to render out before VV has finished building its audio peak file.
If I've got time I'll try some experiments but at render times around 20 hours and big demands on the machine that's pretty difficult.
Its only happened when I'm rendering very long programs and when I'm transcoding.
The first time the program was 2:30:00 long and I was going from PAL to NSTC. I got (after many hours!) an AVI file with an empty audio track. At the time I thought myself an idiot for turning the audio off but later I realised if I done that there wouldn't even be an audio track. Anyways I fixed it without a total re-render, I just rendered out the audio to WAV and bought that into the NTSC AVI and all was well. Due credit to VV there, at no point did it lose sync despite changing the frame rate.
So tonight after 20 hours of hard work VV just finished converting 2 hours of lo res WMV to full res PAL. Shock horror. Again empty audio track!
Go back to original WMV file, render out audio to WAV and audio is there!
This time I will have to sync it up because I'd cut some video off at the beginning but that shouldn't be too hard.
I think and its just a guess, that this may only happen IF I start to render out before VV has finished building its audio peak file.
If I've got time I'll try some experiments but at render times around 20 hours and big demands on the machine that's pretty difficult.