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  1. Member
    Join Date
    Mar 2011
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    Paris, France
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    Hello,

    I'd like to replace the bad audio in an MP4 file with a better copy available as a separate audio file.

    Is there a good, easy to use (Windows) application to sync audio and video?

    Thank you.
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  2. Member hech54's Avatar
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    Jul 2001
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    Yank in Europe
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    How long is the video?
    Something like a single music video, not so bad....an entire movie? Not something I would want to try.
    Are the run times/duration of the two files even remotely similar to each other?
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  3. Member
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    Mar 2011
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    Paris, France
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    It's just a 10mn file of a conference.

    There's about 30s extra at the beginning of the video file that I'll trim with eg. ffmpeg.

    Ideally, I'm looking for a GUI-based solution that makes it easy to shift the audio a bit until it's in sync, and save the combo as a new file.
    Last edited by yetanotherlogin; 15th Sep 2017 at 13:00.
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  4. Try VirtualDub Filtermod. Enable: View -> Audio Display.
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  5. Member
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    Mar 2011
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    Thanks.
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  6. Member hech54's Avatar
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    Jul 2001
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    Yank in Europe
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    I use an old version of AviDemux to replace audio. No re-encoding of video if done properly.
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  7. Member
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    Mar 2011
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    I'll give it a shot.
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