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MPEG to MPEG-4, No Sound, Why?

1213 Views 12 Replies Latest reply: Sep 15, 2005 10:56 PM by Kerri RSS
Peter DiSalvo Level 1 Level 1 (25 points)
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Sep 15, 2005 10:56 PM
A client gave me a CD-Rom with MPEG movies. I need to upload to a web site so visitors can watch movie. I believe I want to to Export to MPEG-4. I have tried as MPEG-4, .mov, H264, but with all of these I lose the Audio when the export is done. There are no available options (grayed out) for Audio export? What am I missing ? QT 7.0.2
  • QuickTimeKirk Level 8 Level 8 (47,365 points)
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    Sep 10, 2005 1:41 PM (in response to Peter DiSalvo)
    Peter, welcome to these discussions.
    QuickTime can't export the audio portion of any MPEG (1 or 2) formats.
    MPEG Streamclip is what I use (you're mileage may vary) to convert MPEG formats to QuickTime file formats.
    Best part is that it is relatively fast and "free".
  • Ricktoronto Level 6 Level 6 (11,550 points)
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    Sep 12, 2005 11:32 AM (in response to Peter DiSalvo)
    To use MPEG Streamclip just open the MPEG, correct for timecode errors (EVERY time Apple+F keys), then just select export to QT and pick a codec and let it fly. Other than deinterlacing which I always choose and making sure the size is what you want (unscaled or some other size) it pretty much does a great job on its own.

    Note with some codecs you lose some tweaking on the options. In that case I export to QT using Animation codec which is very fast and makes gigantic files ( it is uncompressed). Then open in QT Pro and export to whatever codec you like with whatever options you want for video and audio.
  • Kerri Calculating status...
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    Sep 14, 2005 10:09 PM (in response to Peter DiSalvo)
    Don't know why the sound doesn't work...
    but I "had" been compressing my web movies with the MPEG4 codec (now being called AAC in 7.0.2) and kept getting complaints every so often from Windows XP users that they couldn't get the sound to work. I have discovered that the QDesign Music 2 audio codec compresses with very much the same efficiency as the MPEG4 (AAC) audio codec and seems to be pretty happy with all my web clients.
  • Kerri Level 1 Level 1 (50 points)
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    Sep 15, 2005 6:26 PM (in response to Peter DiSalvo)
    If you are trying to get movies for the web...
    Try this:
    Take your original MPEG4 movie and open it in Quicktime
    Then File > Export

    Export: Movie to Quicktime Movie
    Use: Broadband Medium
    Click on the "Options" button

    Under Video > Settings > Compression Type > none
    Under Sound > Settings > Format > QDesign Music 2
    Decide if you want Mono or Stereo
    Let it default to the recommended Rate.

    Say OK, name it and save it...see what happens.
    I think you will be pleased!
  • Kerri Level 1 Level 1 (50 points)
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    Sep 15, 2005 10:54 PM (in response to Peter DiSalvo)

    I realize that you already have the MPG video, that is why I suggested "no compression" on the video format option. Also, MPG4 video is great-especially if there is a lot of motion or dissolves in the movie, but I have found as good and often better results with Sorenson Video 3. MPG4 audio is awesome, but if you are shooting for web viewing, for some reason a few Windows users will still have problems with it.

    I am not sure if I am completely understanding your challenge...But, it sounds like the problem is that when you go to export the "movie to a quicktime movie," (not "movie to mpeg4") your option for the audio settings is not active? Can you look at the movie info in the quicktime app (window > show movie info) and see what the original audio codec is?

    If the movies were originally compressed in a windows setting, could it be using codecs that may require access to a cross platform app like Adobe Premiere, AfterEffects, or even Media Cleaner to have the available resources to properly read your audio and convert it?

    This sounds like a challenge that may need a phone call. It seems the writing on the discussion board is not accurately conveying all the issues you are up against. Sorry I wasn't better help. It originally seemed like a cinch.
  • Kerri Level 1 Level 1 (50 points)
    Currently Being Moderated
    Sep 15, 2005 10:56 PM (in response to Peter DiSalvo)
    Good for you!!!


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