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  • FFmpeg/X264 : Split video mid-GOP without reencoding entire stream

    10 juillet 2012, par yoda_alex

    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.

    Thanks in advance !

  • ffmpeg - virtually split source file for analyse

    31 mai 2019, par user6698332

    The goal is to split file on segments by theirs qty or duration
    to get info for each segment separately,
    avoiding of physical splitting the file or
    use multiple of command lines     for each segment of manually calculated lentgh.

    I tried the following :

    ffmpeg.exe -i test.wav -f segment -segment_time 30 -af volumedetect -f null - > test_wav.log 2>&1

    but unsuccessfull :(

    Is there a way to reach it by specific combination of commands and filters ?

    Thank you.
    .

  • FFmpeg.AutoGen example of how to split audio file

    7 mars 2018, par Sven

    I want to use the FFmpeg.AutoGen project from here : https://github.com/Ruslan-B/FFmpeg.AutoGen

    I’m not familiar with the ffmpeg API, so I wanted to get an example of how to split an audio file into little files, for example the audio file is about 2 hours long (can be mp3,ogg,wav,etc.) and I want to split it into several little files of x minutes. The splitting should be done on the main audio file with timestamps from and to, for example from = 00:25:00 (meaning 25 minutes), to = 00:31:12 (meaning 31 minutes, 12 seconds) and the output should be the section from the main audio file, the result is 00:06:12 (meaning 6 minutes, 12 seconds) long.

    How can this task be achieved with the project ? Also a C example can help me, I would try to convert it into the framework.

    Thanks for your responses.

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