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  1. Member
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    Oct 2005
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    Hi all .Could any one suggest some easy to use tools that allow me cut part of mp4 video without re encoding it(so original video quality is preserved)?(I look for a tool that has player and allow me visually mark start and end of video ). I have used ffmpeg but i need to input start and end time manually which is difficult some time to obtain!Thanks in advance.
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  2. Member Cornucopia's Avatar
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    Oct 2001
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    Whether you can cut part of an mp4 without re-encoding is quite dependent not only on the tool used, but WHERE in the sequence the cuts are being made. If the cut is NOT on a keyframe (I-frame, IDR), you will ALWAYS have either a mis-timing (forced cut changed to elsewhere) or you will require re-encoding.
    Without that knowledge, nobody can tell you for sure.

    Scott
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  3. Member racer-x's Avatar
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    Mar 2003
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    3rd Rock from the Sun
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    Agree with Cornucopia. XmediaRecode is what I use to trim mp4's, MOV's, M2T's, TS's and so on. Make sure to cut on Key-Frames.
    Got my retirement plans all set. Looks like I only have to work another 5 years after I die........
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  4. Member
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    Oct 2005
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    Thanks for replies. racer-x could you tell me the steps that doesn't involve re encoding ? I don't know how to enlarge video player on filters/preview tab and how to save the the edited video ? Can't find the save as button!
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  5. Member hech54's Avatar
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    Originally Posted by method View Post
    could you tell me the steps that doesn't involve re encoding ?
    If you want exact cuts, down to the second, there WILL BE RE-ENCODING required.
    The End.
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  6. Originally Posted by method View Post
    could you tell me the steps that doesn't involve re encoding ?
    Use mpc-hc for find the specific frame, then use MKVToolNix for cut/trim without re-encode. Btw, the output file is mkv. Just remux to mp4 using ffmpeg
    Last edited by anana; 9th May 2016 at 13:21.
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