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  1. Member
    Join Date
    Sep 2018
    Location
    Mexico
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    Hello,
    I've recently acquired a Waterproof Intova DUB camera, whose video footage is recorded at HD 1080 but with a Variable Frame Rate (VFR), and all my footage is going out of sync of audio when imported to Vegas.
    I know I need to convert clips conserving same quality but with CFR (Constant Frame Rate)
    I have tried to Transcode it using HandBrake, but Output clips cannot be played smoothly In Vegas as the original, I don't know the settings that will work best.
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  2. Member
    Join Date
    Aug 2010
    Location
    San Francisco, California
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    Pretty easy with FFmpeg. This command will drop or duplicate frames as necessary to achieve the requested rate without re-encoding.

    Code:
    ffmpeg -i myvfr.mp4 -c copy -r 30[or whatever] mycfr.mp4
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  3. Member Cornucopia's Avatar
    Join Date
    Oct 2001
    Location
    Deep in the Heart of Texas
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    Just understand that anytime one converts vfr to cfr, there will be minor desync variations* (~jitter) between the video (which is time-based on frames) and the audio (which is time-based on samples).

    *excepting the rarest occasions where the variations all land exactly on the new video timebase boundaries.

    Scott
    Last edited by Cornucopia; 3rd Sep 2018 at 23:35.
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