Recherche avancée

Sur d’autres sites (4885)

• ffmpy concatenate multiple files with a file list

  10 novembre 2018, par r4ptor

  I’m currently trying to merge multiple video files with a python script using ffmpeg and ffmpy.
  The names of the files are being written into a file list, as suggested by the ffmpeg concatenate wiki.

  In my example I’m only using two files, but in practice, there will be several hundert files, that’s why I’m choosing the file list approach.

  My current code looks like this :

  import os
  
  import ffmpy
  
  
  
  
  
  base_dir = "/path/to/the/files"
  
  
  
  # where to seek the files
  
  file_list = open("video_list.txt", "x")
  
  
  
  # scan for the video files
  
  for root, dirs, files in os.walk(base_dir):
  
      for video_file in files:
  
          if video_file.endswith(".avi"):
  
              file_list.write("file './%s'\n" % video_file)
  
  
  
  # merge the video files
  
  ff = ffmpy.FFmpeg(
  
      global_options={"-f",
  
                      "concat ",
  
                      "-safe",
  
                      "0"},
  
      inputs={file_list: None},
  
      outputs={"-c",
  
               "copy",
  
               "output.avi"},
  
  )
  
  ff.run()

  So the code I want to run with ffmpy is

  ffmpeg -f concat -safe 0 -i video_list.txt -c copy output.avi

  But unfortunately my script isn’t working and the resulting error is

  Traceback (most recent call last):
  
    File "concat.py", line 20, in <module>
  
      "output.avi", }
  
    File "/usr/lib/python3.7/site-packages/ffmpy.py", line 54, in __init__
  
      self._cmd += _merge_args_opts(outputs)
  
    File "/usr/lib/python3.7/site-packages/ffmpy.py", line 187, in _merge_args_opts
  
      for arg, opt in args_opts_dict.items():
  
  AttributeError: 'set' object has no attribute 'items'
  
  </module>

  Any hints why the command isn’t working the way it should ? Am I missing something regarding the command formatting for ffmpy ?

  Thank you.

• show subtitles list, get id and name of each subtitles track

  21 septembre 2020, par user25

  I would like to get some list of all available subtitles tracks like :

  



  #1 - id, name
#2 - id, name
#3 - id, name
...


  



  So list would tell how much subtitles tracks I have, show id and name of each track

  



  Is there any FFmpeg option to show such list ?

  


• avcodec/j2kenc : More complete list of supported pixel formats

  30 mars 2023, par Michael Niedermayer

  avcodec/j2kenc : More complete list of supported pixel formats
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavcodec/j2kenc.c