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• FFMPEG how to use https dynamic url as input for amovie filter

  2 juillet 2020, par Johny Sharma

  Basically what i am trying to do is to calling a dynamic php url which is generating a audio file for me and just want to use that file as an input for amovie filter.
I hope you have understand my question.

  


  What i have done so far ?

  


  I have a FFMPEG code which is :

  


  ffmpeg-y -i 'bg-file.mp3' -c copy -map 0:0 -map 1:0 -filter_complex "amovie='/auth.php?input=string&l=hi&f.mp3':loop=999[sc][mix];[0:a][sc]sidechaincompress=threshold=0.100:ratio=20,volume=10dB:precision=fixed[bg], [bg][mix]amix=duration=first"  -c:a libmp3lame -ac 2  "save.mp3"


  


  This line is calling my dynamic url for generating the required song.

  


  "amovie='/auth.php?input=string&l=hi&f.mp3'


  


  Everything is working if i check them apart. but when i use them together the ffmpeg is giving the following error.

  


  [22] => [Parsed_amovie_0 @ 0x1378140] Failed to avformat_open_input '/auth.php?input=string&l=hi&f.mp3':loop=999'
[23] => [AVFilterGraph @ 0x1368ca0] Error initializing filter 'amovie' with args '/auth.php?input=string&l=hi&f.mp3':loop=999'
[24] => Error initializing complex filters.
[25] => No such file or directory


  


  I dont know is it possible to put a dynamically generated url as an input for amovie filter or not ?
if i open my dynamic url in browser its works like a mp3 file and play similar to any mp3 file.

  


  using this code to play that mp3 :

  


  header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($path));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
ob_clean();
flush();
readfile($path);
exit;


  


  This one looks similar to my query but slightly different and that's why i am still looking for a solution

  


  How to use https input with ffmpeg "amovie" filter ?

  


• lavf/movenc : Use a dynamic buffer when writing the mfra box

  23 juin 2020, par Derek Buitenhuis

  lavf/movenc : Use a dynamic buffer when writing the mfra box
  When doing streamed output, with e.g. +dash, if the mfra box ended
  
  up being larger than the AVIOContext write buffer, the (unchecked)
  
  seeking back to update the box size would silently fail and produce
  
  an invalid mfra box.
  This is similar to how other boxes are written in fragmented mode.
  Signed-off-by : Derek Buitenhuis <derek.buitenhuis@gmail.com>
  

  • [DH] libavformat/movenc.c

• avformat/av1 : Avoid using dynamic buffer when assembling av1c

  21 juin 2020, par Andreas Rheinhardt

  avformat/av1 : Avoid using dynamic buffer when assembling av1c
  Given that AV1 only has exactly one sequence header, it is unnecessary
  
  to copy the content of said sequence header into an intermediate dynamic
  
  buffer ; instead the sequence header can be copied from where it is in
  
  the input buffer.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavformat/av1.c