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  1. Hi Everyone

    I want to cut parts of many 1080p and 4K .mkv videos, I have some questions:


    1. Is cutting part of .mkv video with ffmpeg 100% lossless ?


    2. Is this command correct for video cutting process ?

    ffmpeg -ss 00:05:10 -i "video.mkv" -t 50 -c copy -avoid_negative_ts make_zero "part.mkv"


    3. If ffmpeg is 100% lossless when it comes for cutting video part then that's more than enough for me,

    but if not, can mkvtoolnix use a lossless method ?


    Thank you !
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  2. 1. Yes. Cuts on keyframes only though.
    2. Yes.
    3. Yes.
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  3. Originally Posted by butterw View Post
    1. Yes. Cuts on keyframes only though.
    2. Yes.
    3. Yes.
    Perfect ! Thank you !
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  4. Is mkvtoolnix only a ffmpeg GUI or does it have its own extensions ?
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  5. Originally Posted by butterw View Post
    mkvtoolnix isn't a ffmpeg GUI, it's based on mkvmerge.
    OK. Thank you again !
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