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• movenc : take packet dts shifting into mention in check_pkt

  30 septembre 2017, par Jan Ekström

  movenc : take packet dts shifting into mention in check_pkt
  This FFmpeg-specific "fuzzer fix" was never perfect, but now it
  
  stopped encoding of actual content with a big enough DTS shift.
  
  This returns the function to its original state of results
  
  before negative CTS offsets were added.
  I remember dealing with this function before, but somehow had
  
  forgotten about it during VDD. The test cases not tripping this
  
  over also didn't help.
  

  • [DH] libavformat/movenc.c

• Aforge.NET Video Size Decreases When Writing Back Frames to the Video

  23 août 2016, par Irfan Babar

               try { VideoFileReader reader = new VideoFileReader();
  
                 VideoFileWriter wrt = new VideoFileWriter();
  
                 tot = reader.FrameCount;
  
                  wrt.Open("outvid.mp4",reader.Width,reader.Height,reader.FrameRate,VideoCodec.MPEG4);
  
                  Bitmap videoFrame = null;
  
  
  
                  for (int i = 1; i <= tot; i++)
  
                  {
  
                       videoFrame = reader.ReadVideoFrame();
  
  
  
                       wrt.WriteVideoFrame(videoFrame );
  
                       videoFrame .Dispose();
  
                  }
  
                  wrt.Close();
  
                  reader.Close();
  
  
  
  
  
              }
  
          }
  
          catch (Exception exc)
  
          {
  
              MessageBox.Show( exc.ToString());
  
          }

  after writing back the video size and resolution also decrease, what shoud i do to make perfect frame writing back into the video ?
  Actually I am reading frame by frame from one video and writing that video frame in another video without any modification,Please suggest me solutions

• avformat/mxfdec : always use a stream which matches the first index table when seeking

  17 février 2018, par Marton Balint

  avformat/mxfdec : always use a stream which matches the first index table when seeking
  Obviously this is still not perfect, but better then it was. Using the first
  
  index table and mxf->current_edit_unit is still hardcoded in many places, so
  
  this change has hopefully the less chance of breaking anything that works
  
  now.
  Signed-off-by : Marton Balint <cus@passwd.hu>
  

  • [DH] libavformat/mxfdec.c