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  1. Member Abas-Avara's Avatar
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    Hi,

    I've captured trough my camcorder VHS tapes, but they are noisy.
    So I captured the audio with my tuner, the format is PCM uncompressed WAV.

    There is a limit of 2GB so it's splitted.
    I learned that DV AVI is interleaved, audio and video separate.

    I added the audio+DV AVI on Vegas timeline.
    I matched the audio and deleted the noisy audio.

    I rendered as DV AVI, but when I compared the new DV AVI with the old DV AVI it isn't good..
    Surprised I see the rendered one is a bit darker. Why the hell does Vegas do that, I only want to replace the audio...
    But during the render process vegas said no compression needed (in the preview window)

    In short words, I want to replace audio without smart rendering or rendering the video.

    I hope someone can help me out
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  2. Use VirtualDub:

    File -> Open Video Files (open DV AVI)
    Video -> Direct Stream Copy
    Audio -> Audio From Another File (select WAV file or the DV AVI you rendered with Vegas)
    File -> Save as AVI

    Also, how did you compare you before and after (Vegas) files? With two media players playing side by side? Even a single file being played in two players side by side may look different because one will be using the graphics card's video overlay feature, the other not (only one program at a time can use overlay). Video overlay has different color/contrast settings than the desktop.
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  3. Member Abas-Avara's Avatar
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    I opened 2 VLC.exe. I have a TV out setup, maybe that was the problem this time I will take a snapshot but first rerender...I deleted the new file..

    But WAV is limited to 2GB I cant save it to an single file.

    Now it's rendering here is a screenshot


    I think it can be much faster, 5 minutes elapsed its 15%
    How can it take that long to just replace an audio file of 2/3GB?
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  4. You can also use Graph Edit to replace the audio without affecting the video portion at all. It will be rather clunky to do on multiple files but it should be much quicker.

    Let me know if you'd like more info.
    John Miller
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  5. Member Abas-Avara's Avatar
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    I will give it a try.

    But the time is no problem for me, the only thing I scared of that it takes longer cause it's rendering the video. What do you think, that it renders the video?
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  6. Member Abas-Avara's Avatar
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    Ive tried Graph Edit but it's too hard/complex for me.
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    Originally Posted by Abas-Avara
    I think it can be much faster, 5 minutes elapsed its 15%
    How can it take that long to just replace an audio file of 2/3GB?
    It still has to write all the video data to the new file, even though it's (hopefully) just copying it.
    If your audio is over 2GB, you must have over 3 hours of DV video to write, 40GB or more.
    It also has to read the original video file while it's doing that, so maybe the time taken is not unreasonable.
    What sort of HDD do you have?
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  8. Member Abas-Avara's Avatar
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    Originally Posted by Gavino
    Originally Posted by Abas-Avara
    I think it can be much faster, 5 minutes elapsed its 15%
    How can it take that long to just replace an audio file of 2/3GB?
    It still has to write all the video data to the new file, even though it's (hopefully) just copying it.
    If your audio is over 2GB, you must have over 3 hours of DV video to write, 40GB or more.
    It also has to read the original video file while it's doing that, so maybe the time taken is not unreasonable.
    What sort of HDD do you have?
    You are right, I forgot the video size of 45GB
    And Ive to 2 partitions, so its a transfer of from 1 partition to the other partition..
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  9. Member Abas-Avara's Avatar
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    Now I just edited the audio, how will it work with editing video (copying, cutting and pasting)? I mean with that the quality of the DV AVI

    It's not yet finished, I have to compare with screenshots now.
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  10. Member Abas-Avara's Avatar
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    Yes it had to do with the overlay settings.
    Now Ive compared it separate with a screenshot and its ok!

    Thanks everyone for the help
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  11. Originally Posted by Abas-Avara
    And Ive to 2 partitions, so its a transfer of from 1 partition to the other partition..
    That's a worst case scenario. Not only are the reads and writes on the same drive but they are guaranteed to be far apart increasing the seek times. Putting the input and output file in different drives will increase your throughput with DV AVI.

    Originally Posted by Abas-Avara
    Now I just edited the audio, how will it work with editing video (copying, cutting and
    pasting)? I mean with that the quality of the DV AVI
    Vegas is smart enough not to reencode anything with cut/copy/paste operations. Every frame of DV is self contained so they can be moved around or removed without even decompressing them.
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  12. Member Abas-Avara's Avatar
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    Originally Posted by jagabo
    Originally Posted by Abas-Avara
    And Ive to 2 partitions, so its a transfer of from 1 partition to the other partition..
    That's a worst case scenario. Not only are the reads and writes on the same drive but they are guaranteed to be far apart increasing the seek times. Putting the input and output file in different drives will increase your throughput with DV AVI.

    Originally Posted by Abas-Avara
    Now I just edited the audio, how will it work with editing video (copying, cutting and
    pasting)? I mean with that the quality of the DV AVI
    Vegas is smart enough not to reencode anything with cut/copy/paste operations. Every frame of DV is self contained so they can be moved around or removed without even decompressing them.
    Thanks for your answer, thankgod it doesn't reencode
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