Combining Video and Audio Streams?

[hutchingsp]

I have some AVI files that are DIVX encoded.

Basically the sound is out of sync, it starts off OK but seems to drift more and more the further into the file you get.

I use ffmpegx to extract the audio as a seperate track, and when I play it back it is the same length as the video file is, so I'm hoping/guessing that if I can combine the two into, say an mpeg, I'll have a video file with synced sound?

Am I pissing in the wind here, or does that sound right? I'm struggling to manage to do this with ffmpegx. I figure I need the Mux option but it doesn't appear to do anything (with 0.9.3t)

cheers,
Paul

[major]

Did you try to encode by using the same framerate as the source (NTSC / NTSC, PAL / PAL or NTSC FILM / NTSC FILM)?

[hutchingsp]

Did you try to encode by using the same framerate as the source (NTSC / NTSC, PAL / PAL or NTSC FILM / NTSC FILM)?

Hi. Yes, on the Summary tab the source shows as 23.98fps and the target shows as 23.976.

I'm wondering if the AVIs are corrupt as I've noticed that when playing them in VLC or Mplayer, although the file should be, say 30 minutes, if I try and seek to a point after 20 minutes or so, the video window simply disappears, yet if I watch the AVI from the start it plays the full 30 minutes, albeit with the audio corruption.

I did try the "Fix" option from the ffmpegx Tools menu and it creates a new file, but it appears to do the same thing.

cheers,
Paul

[major]

Try to enable "Decode with Quicktime" to decode them, as sometimes it may normalize things.

[hutchingsp]

Try to enable "Decode with Quicktime" to decode them, as sometimes it may normalize things.

OK. Blind moment where is the "decode with quicktime" option?

cheers,
Paul

[major]

In the Options tab.. it also depends on which target format you're using.