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• Revision 7ab9a9587b : Remove Wextra warnings from vp9_sad.c As a side-effect, the max_sad check is re

  13 mai 2014, par Deb Mukherjee

  Changed Paths :
   Modify /test/sad_test.cc

  
   Modify /vp8/common/rtcd_defs.pl

  
   Modify /vp8/common/sad_c.c

  
   Modify /vp8/common/variance.h

  
   Modify /vp8/encoder/mcomp.c

  
   Modify /vp8/encoder/rdopt.c

  
   Modify /vp9/common/vp9_rtcd_defs.pl

  
   Modify /vp9/encoder/vp9_encodeframe.c

  
   Modify /vp9/encoder/vp9_mbgraph.c

  
   Modify /vp9/encoder/vp9_mcomp.c

  
   Modify /vp9/encoder/vp9_rdopt.c

  
   Modify /vp9/encoder/vp9_sad.c

  
   Modify /vp9/encoder/vp9_variance.h

  
  
  Remove Wextra warnings from vp9_sad.c

  As a side-effect, the max_sad check is removed from the
  C-implementation of VP8, for consistency with VP9, and to
  ensure that the SAD tests common to VP8/VP9 pass.
  That will make the VP8 C implementation of sad a little slower
  but given that is rarely used in practice, the impact will be
  minimal.

  Change-Id : I7f43089fdea047fbf1862e40c21e4715c30f07ca

• Revision 56d048c412 : Moving mv entropy encodings calculation to the encoder side. Moved arrays : vp

  26 novembre 2013, par Dmitry Kovalev

  Changed Paths :
   Modify /vp9/common/vp9_alloccommon.c

  
   Modify /vp9/common/vp9_entropymv.c

  
   Modify /vp9/common/vp9_entropymv.h

  
   Modify /vp9/encoder/vp9_encodemv.c

  
   Modify /vp9/encoder/vp9_encodemv.h

  
   Modify /vp9/encoder/vp9_onyx_if.c

  
  
  Moving mv entropy encodings calculation to the encoder side.

  Moved arrays :
  vp9_mv_joint_encodings
  vp9_mv_class_encodings
  vp9_mv_class0_encodings
  vp9_mv_fp_encodings

  Change-Id : Iaf5008c579fcbd6d77fdd81d1aef8c71b5f308b7

• How to record all dynamic videos in the process of capturing screen video with ffmpeg from a python program ?

  4 décembre 2020, par fengnix

  I have many robotframework test cases and in the first case, a ffmpeg command like the following is invoked to record the whole running process :

  


  ffmpeg -framerate 30 -f gdigrab -i desktop -c:v libx264rgb -crf 0 -preset ultrafast output.mkv


  


  Whenever I firstly run all cases and then manuually run the above command from an addition command console, the recorded video always looks fine, it looks like all contents on the screen can be correctly captured.

  


  However, once I execute the command the same as the above one in the first case by call the following code :

  


  p=subprocess.Popen(cmd, shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)


  


  and then in the final test case the record process is stopped by calling the following code to tell ffmpeg that we want to stop the recording :

  


  p.stdin.write(bytes("q",'UTF-8'))  


  


  the final result video only contain correct contents of the "start" and the "end" of the whole process, but all other contents no longer changed and seemd just a static image, which means all the dynamic effects on the screen cannot be captured.

  


  Could anyone be so kind as to let me know what the matter is and how to solve it ?