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• Revision a1f15814be : Clamp decoded feature data Not all segment feature data elements are full-range

  27 novembre 2012, par John Koleszar

  Changed Paths : Modify /vp9/common/vp9_seg_common.c Modify /vp9/common/vp9_seg_common.h Modify /vp9/decoder/vp9_dboolhuff.c Modify /vp9/decoder/vp9_dboolhuff.h Modify /vp9/decoder/vp9_decodframe.c Modify /vp9/encoder/vp9_bitstream.c Modify /vp9/encoder/vp9_boolhuff.c (...)

• Generating movie from python without saving individual frames to files

  8 avril 2015, par Paul

  I would like to create an h264 or divx movie from frames that I generate in a python script in matplotlib. There are about 100k frames in this movie.

  In examples on the web [eg. 1], I have only seen the method of saving each frame as a png and then running mencoder or ffmpeg on these files. In my case, saving each frame is impractical. Is there a way to take a plot generated from matplotlib and pipe it directly to ffmpeg, generating no intermediate files ?

  Programming with ffmpeg’s C-api is too difficult for me [eg. 2]. Also, I need an encoding that has good compression such as x264 as the movie file will otherwise be too large for a subsequent step. So it would be great to stick with mencoder/ffmpeg/x264.

  Is there something that can be done with pipes [3] ?

  [1] http://matplotlib.sourceforge.net/examples/animation/movie_demo.html

  [2] http://stackoverflow.com/questions/2940671

  [3] http://www.ffmpeg.org/ffmpeg-doc.html#SEC41

• cut and encode 30 seconds video samples from a movie with xuggler

  23 novembre 2012, par user1848294

  I would like cut three 30 seconds samples from movies at the begin of the movie at the middle and at the end.

  Can I get the movie length with xuggler ? How can I tell the xuggler to encode aa:bb to cc:dd then ee:ff to gg:hh etc.?