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Thread: audio crashing

  1. #1

    audio crashing

    I have Catalyst crashing every now and then playing movies which have audio embedded. Is there any audio codec which could bring this about? They are 100x100 pixel dvpal black movies which I made just to be able to playback audio between "video" cues? I use them play audio once playmode. little endian/ big endian related?
    Any suggestions are very welcolme.

    Thanks,

    Sven

  2. #2
    you cant actually render dv pal at 100x100. it doesnt work.
    only works at 720x576 - codec cheats. dv is constant bit-rate...

    suggest you try a tiny photo-jpeg movie with audio instead.
    make sure you use uncompressed aiff audio

  3. #3
    Quote Originally Posted by Sven
    I use them play audio once playmode. little endian/ big endian related?
    Sven
    there was a little/endian big endian problem in samsc with audio tracks dragged from a cd onto the desktop. they are formatted in little endian.

    this doesnt affect catalyst as quicktime handles the audio directly.

  4. #4
    What can happen if aiff is not used? (I used mp3, because that's all I was given). The movies display as 100x100 dvpal, but you are saying that that's a cheat, because quicktime is only showing the 100x100, but really has 576x720?
    Thanks,
    Sven

  5. #5
    convert the movie to aiff. dont use mp3 sound.
    i dont do anything special to handle audio files.
    i just noticed its unreliable in catalyst.
    I think MP3 files dont like to locate to any position in the movie - using in or outpoints. they dont loop well either.

    mp3 is a compressed audio format, AIFF is uncompressed.

    you can use quicktime player to export an aiff file.

    yes you rendered a dv-pal movie at 100x100 - but its still 3.5MB/s data rate - quicktime cheats. it doesnt actually make the movie at 100x100. it fiddles with parameters somewhere.
    DV codec only support 720x576 at 25Mbps (megabits/secs) or 3.5MB/s (megabytes/sec)
    all the other 620x476 pixels are still in the movie- somewhere.

    either of these things may or may not have been responsible for the crash.

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