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• Split a wav file into multiple overlapping .wav files using ffmpeg

  5 juillet 2018, par Neeraj Sharma

  I need to split big .wav files into small chunks of the same interval.
  This can be done using this command :

  ffmpeg -i input.wav -f segment -segment_time 59 -c copy parts/out%09d.wav

  but the requirement is some overlap. I am using these chunks for transcription and overlap will help in joining the chunked transcription results. Is there a way to get the overlapped audio chunks ?

• FFMPEG split mp3 and add metatag [closed]

  4 mai 2023, par Ghile

  I have a 2 hour mp3 that I automatically split with python3 and ffmpeg into many mp3 files. I would also like to add metadata to mp3 files, in order to have title, artist, year and album.

  


  In a csv file I have the cutting times and the name of the mp3 file, but I can't add meta data. The function I use is this :

  


  ffmpeg -loglevel panic -i 1.mp3 -ss 02:29:11 -to 02:34:43 -c copy -metadata 'title=My Title', 'artist=ME', 'date=2023' temp/myfile1.mp3


  


  Not work, It only works if I set the title only. Can you help me, please ?
Thank you,

  


• FFMPEG : Muxing packet split into separate buffers

  12 avril 2018, par Embedded Android

  I’m using libavformat to write raw H265 frames from a hardware encoder to a .mov container.

  For some frames the hardware encoder outputs the frame split into multiple separate buffers. I’d like to write one frame using multiple av_write_frame() calls containing the split data buffers, but av_write_frame() and av_interleaved_write_frame() expect the DTS to increment on each call.

  Is there any way to use libavformat to make multiple av_write calls for a single packet ?

  The only solution (which isn’t very performant) appears to be to coalesce all the raw H265 bytes for a single frame into one pkt and making one av_write_frame() call.