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    converting 44.1 wavs to 48khz
    #1
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    So, when it comes to sound, I admit I need to learn more. So my question is, if you convert a 44.1 sound file to 48, does that change the duration of that file?

    The reason I ask is the show I am working on, I am given a leica quicktime sequences of the episode with the audio at 44.1. With these I receive wavs of the entire sequences audio, with each characters voices isolated to a track.

    In all other cases these are sent as 48k, however, these ones were sent as 44.1.

    My procedure is to take the qt, convert it to the codec I use and convert the QT audio to 48. I then line up the wavs, to the quicktime to make sure everything is in sync. The odd thing is that with these, when I try to convert these wavs to 48, they do not match the qt audio, (even though I converted it to 48) but slowly drift more and more out of sync the further down the timeline you go.

    I use QTpro to convert these files. Is there something I am missing here? Should I use a different program to convert?

    Any suggestions would be greatly appreciated.

    Thanks in advance.

    Jeremy


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    #2
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    use Compressor. So easy....its effortless (well, basically).
    Joe Calabrese


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    #3
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    You can use Audacity to convert the wav files to 48kHz, it's free. Changing the sampling rate shouldn't have any effect on the duration.


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    #4
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    QT Pro player or Compressor will work, the latter permitting a batch conversion.
    David S.


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    #5
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    I used qt pro to do the conversion. I'm going to try either compressor, or STP and if that doesn't work, try converting them to aiffs.
    So just to confirm, as photonashville said, converting these should not change the duration? Or maybe I should rephrase, it should not change the sync?


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    #6
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    It doesn't affect duration.

    Test it and compare.
    David S.


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    Aerial Videography for Beginners, Part 2



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    #7
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    Okay, so I didn't even need to recovert the files that I had already converted to 48... it looks like FCP was getting confused with the duplicate name. Everything now lines up properly after renaming all the files.
    Thanks for everyones input.


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