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  • How does ffmpeg c/c++ concat mp4 files composed of unequal lengths of audio and video ?

    23 juin 2018, par fredirty2017
    • I am now write a program for capture microphone and desktop courses as mp4, where the microphone and screen image are captured independently, which means that it is possible that the microphone and screen are captured synchronously, and it is also possible that only the microphone are captured and screen are not capture, vice versa.
    • In addition, I will produce a piece of mp4 file according to the time, such as 10 minutes. Finally, once the entire lesson operation is completed, I will concat all the mp4 clip files into one big mp4 file.
    • I am not sure that mp4 has a way to set the last video frame or silent audio frame of the last clip file image for a period of time. Or do I have to fill these silent frames myself ?
  • lavc/avcodec : improve AV_CODEC_FLAG_RECON_FRAME doxy

    10 janvier 2023, par Anton Khirnov
    lavc/avcodec : improve AV_CODEC_FLAG_RECON_FRAME doxy
    

    Do not break a sentence on a period after "i.e.".

    Link to the definition of AV_CODEC_CAP_ENCODER_RECON_FRAME.

    • [DH] libavcodec/avcodec.h
  • ffmpeg : add correct field for raw pts in -progress report

    5 août 2018, par Gyan Doshi
    ffmpeg : add correct field for raw pts in -progress report
    

    PTS is in microseconds, so correct field name is out_time_us.

    Old field out_time_ms kept for now - will be removed after a suitable transition
    period.

    Fixes #7345

    • [DH] fftools/ffmpeg.c