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I've got an H264 video (Stored in an MP4 file). Each GOP is approx 10s long. I want to trim the first couple of seconds off the video, which means I need to split the first GOP. Is there a way to do this without re-encoding the entire video?

I've got FFmpeg and x264 available. I'm happy to use either the FFmpeg command line, or my own program linked against ffmpeg of x264 libraries.

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Does the video contain B pictures? – slhck Sep 25 '11 at 11:36
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appears this question received an answer here, as well: stackoverflow.com/questions/7545002/… – rogerdpack Jul 10 '12 at 17:01

FFVhuff is lossless codec

ffmpeg -i input.mkv -c:v ffvhuff FFVhuff.mkv

ffmpeg -ss 26.818 -i FFVhuff.mkv trim.mkv

http://svnpenn.blogspot.com/2011/10/ffmpeg-cut-to-frame-same-audio.html

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