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• lavfi/vf_libplacebo : allow operation without avhwdevice

  11 mai 2023, par Niklas Haas

  lavfi/vf_libplacebo : allow operation without avhwdevice
  Recent versions of libplacebo have required Vulkan versions incompatible
  
  with lavu Vulkan hwcontexts. While this is expected to change
  
  eventually, breaking vf_libplacebo every time there is such a transition
  
  period is obviously undesired behavior, as the following sea of bug
  
  reports shows.
  This commit adds a fallback path for init_vulkan failures which simply
  
  creates an internal device if there was no user-supplied Vulkan hwaccel.
  
  Useful when no interop with lavu vulkan hwframes is needed or desired,
  
  and makes using this filter easier inside certain applications.
  Fixes : https://github.com/haasn/libplacebo/issues/170
  
  Fixes : https://github.com/mpv-player/mpv/issues/9589#issuecomment-1535432185
  
  Fixes : https://github.com/mpv-player/mpv/issues/11363
  
  Fixes : https://github.com/mpv-player/mpv/issues/11685#issuecomment-1546627082
  
  Closes : https://code.videolan.org/videolan/libplacebo/-/issues/270
  

  • [DH] libavfilter/vf_libplacebo.c

• lavf/avio : temporarily accept 0 as EOF.

  27 octobre 2017, par Nicolas George

  lavf/avio : temporarily accept 0 as EOF.
  Print a warning to let applicatios fix their use.
  
  After a deprecation period, check with a low-level assert.
  
  Also make the constraint explicit in the doxygen comment.
  Signed-off-by : Nicolas George <george@nsup.org>
  

  • [DH] libavformat/avio.h
  • [DH] libavformat/aviobuf.c
  • [DH] libavformat/version.h

• Python : How to clip/trim required part from the video and move the trimmed video file to other directory

  4 avril 2021, par saurabh

  I'm trying to remove duplicate segments from videos from a directory and paste these trimmed videos to other directory.

  


  For example :

  


  I've following directory structure for saving live rtsp stream (each 1 min long) :-

  


  Live_videos
------2021-04-04
      ------stream1
            -------14 36 08.avi( 1 min)
                   14 37 08.avi( Saved only till 14 37 39 mark due to disconnect with stream1 camera)
                   14 38 35.avi( 1 min)
            stream2
            -------14 36 15.avi( 1 min)
                   14 37 15.avi( 1 min)
                   14 38 14.avi( 1 min)


  


  So, the disconnect and reconnect time are 14 37 40 and 14 38 34 respectively which will be sent to some other server and that server will search for videos saved in their machine which contains segments from the given timestamps and sends the video file in following directory structure : -

  


  Edge_videos
-----------2021-04-04
           ----------stream1
                     -------14 36 35.avi
                     -------14 37 35.avi


  


  Now, you can see that the received video files have the required segments from disconnect period as well as duplicate segments which are already saved in Live_videos directory.

  


  How do I remove the duplicate segments from the received videos and move only the required trimmed video file to the Live_videos----> stream1 directory and delete all the files from Edge_videos afterwards.