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• lavu : add new D3D11 pixfmt and hwcontext

  6 juin 2017, par wm4

  lavu : add new D3D11 pixfmt and hwcontext
  To be used with the new d3d11 hwaccel decode API.
  With the new hwaccel API, we don’t want surfaces to depend on the
  
  decoder (other than the required dimension and format). The old D3D11VA
  
  pixfmt uses ID3D11VideoDecoderOutputView pointers, which include the
  
  decoder configuration, and thus is incompatible with the new hwaccel
  
  API. This patch introduces AV_PIX_FMT_D3D11, which uses ID3D11Texture2D
  
  and an index. It’s simpler and compatible with the new hwaccel API.
  The introduced hwcontext supports only the new pixfmt.
  Frame upload code untested.
  Significantly based on work by Steve Lhomme <robux4@gmail.com>, but with
  
  heavy changes/rewrites.
  Signed-off-by : Diego Biurrun <diego@biurrun.de>
  

  • [DBH] doc/APIchanges
  • [DBH] libavutil/Makefile
  • [DBH] libavutil/hwcontext.c
  • [DBH] libavutil/hwcontext.h
  • [DBH] libavutil/hwcontext_d3d11va.c
  • [DBH] libavutil/hwcontext_d3d11va.h
  • [DBH] libavutil/hwcontext_internal.h
  • [DBH] libavutil/pixdesc.c
  • [DBH] libavutil/pixfmt.h
  • [DBH] libavutil/version.h

• Python script doesn't work properly when ran through terminal, but works fine in Jupyter and Visual Studio

  21 octobre 2018, par Ivan Novikov

  I have a script to extract the audio from all video files in a folder.

  The folder with videos is located at : /Users/MyName/Downloads/Video_Audio_files

  When I try to run it through terminal and I’m prompted for the folder path folder = input("Path to folder:"), I drag and drop it there (which is how I got the above path), but the script doesn’t seem to be working (stuck at 0 out of 7 and no output files).

  When I input exactly the same path when prompted in Jupyter Notebook or in Visual Studio it works perfectly !

  Edit : I think I have found the issue, when I drag and drop the folder, there is an extra space (’Downloads/folder ’ instead of ’Downloads/folder’).

  pbar = ProgressBar()
  
  files = []
  
  extensions = []
  
  folder = input("Path to folder:")
  
  #folder = 'Video_Audio_files'
  
  pathlist = Path(folder).glob('**/*.mp4')
  
  for path in pathlist:
  
      path_in_str = str(path)
  
      name = path_in_str.split("/")[1]
  
      files.append(path_in_str.split(".")[0])
  
      extensions.append(path_in_str.split(".")[1])
  
  
  
  os.system('cd ' + folder)
  
  
  
  for i in pbar(range(len(files))):
  
      video_format = extensions[i]
  
      video_name = files[i]
  
      output_format = 'flac'
  
      output_name = video_name + '_audio'
  
  
  
      bashCommand = 'ffmpeg -i ' + video_name + '.'   + video_format + ' -f ' + output_format + ' -ab 192000 -vn ' + output_name + '.' + output_format
  
  #should be of this format: bashCommand = 'ffmpeg -i Video.mp4 -f flac -ab 192000 -vn ExtractedAudio.flac'
  
  
  
      os.system(bashCommand)

• lavfi : add a new struct for private link properties

  5 août 2024, par Anton Khirnov

  lavfi : add a new struct for private link properties
  Specifically those that should be visible to filters, but hidden from
  
  API callers. Such properties are currently located at the end of the
  
  public AVFilterLink struct, demarcated by a comment marking them as
  
  private. However it is generally better to hide them explicitly, using
  
  the same pattern already employed in avformat or avcodec.
  The new struct is currently trivial, but will become more useful in
  
  following commits.
  

  • [DH] libavfilter/avfilter.c
  • [DH] libavfilter/avfilter_internal.h
  • [DH] libavfilter/avfiltergraph.c
  • [DH] libavfilter/filters.h