Replacing Audio Stream without Recoding - Is It Possible?

Discussion in 'DivX / XviD' started by Trenchant, Jan 18, 2006.

  1. Trenchant

    Trenchant Member

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    Yeah yeah... I'm a newb here, it's clear. And yes, I did the whole search first thing.

    Anyways... Moving along...

    I'd like to replace the audio stream in an XviD video without having to recode the entire video and suffer a loss of quality. Are there any tools available that'll let me do that?

    If not, next question... The video in question plays fine, but when I recode it to other formats (DVD, MPEG, NSV), there's an audio synch issue. I've determined that it's due to 0.5 seconds of audio missing at the opening. I've extracted the audio, added 0.5 seconds to the beggining, and then recoded the video to XviD AVI again, and I'm left with a file that I can convert to anything I want without the synch issue showing up anymore. If I can't do what I originally wanted to, is there some way to add that 0.5 seconds to the Audio stream in the original AVI?
     
  2. Sinfamous

    Sinfamous Member

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    I recently tackled this same issue. For a long time I struggled with certain XviDs and Audio Synch problems. I found that it only happens with those which have AC3 Audio. One method you could try is extracting the AC3 from the AVI by using this method:
    http://www.afterdawn.com/guides/archive/extract_ac3_from_avi.cfm

    From there you can convert the AC3 to WAV or MP3, and use the seperate audio file when burning. This worked for me. Refer to this guide for more details, it helps!
    http://www.afterdawn.com/guides/archive/convert_avi_to_dvd.cfm
     

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