9 Matching Annotations
  1. Feb 2021
  2. Jan 2021
  3. Jan 2020
    1. [mp4 @ 0x7fe98400dc00] track 1: could not find tag, codec not currently supported in container This means that pcm_mulaw is not allowed in the MP4 output container format. Your choices are: Use a different output container format ffmpeg -i input -codec copy output.mkv Or re-encode the audio ffmpeg -i input -c:v copy -c:a aac output.mp4
    1. This is telling you not that the codec is missing, but that it is not compatible with the MP4 format. You can fix this issue by using a different audio codec. ffmpeg -i P1010989.MOV -vcodec copy -acodec aac -strict -2 -b:a 384k out.mp4
    1. The command: ffmpeg -i rtsp://@ -acodec copy -vcodec copy c:/abc.mp4 will not do transcoding and dump the file for you in an mp4.
  4. Dec 2017
    1. FFmpeg itself is composed of several libraries that can be used individually, and outside of FFmpeg, for instance in integrating parts of FFmpeg into your own program.

      the guide to Intergrating FFmpeg

    1. Compile with pthreads and make sure to specify the number of threads you want to use with the -threads cmdline parameter

      FFMPEG multithreading to take the advantage of multi core cpu