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• filesize is not growing as expected

  29 juillet 2019, par Oracy Martos

  I am trying to record a stream here on my machine to study ffmpeg library,
  but with(out) success.

  I have a file watcher to clean up bugged streams, that cleanup each 3 minutes files that have been not changed less then 3 minutes.

  The real problem is, if I use the command below :

  /usr/bin/ffmpeg -i http://sysrad.net:10090/ -y test.mp3

  this command doesn’t have any kind of codec or audio transformation, so my target file (test.mp3) become 256k quickly, but, if I use this command below :

  /usr/bin/ffmpeg -i http://sysrad.net:10090/ -y -b:a 8k -ac 1 -ar 11025 test.mp3

  My target file (test.mp3) keep 0k until the record has 256k, I am not sure if this is an Unix problem or ffmpeg problem.

  Other information, if I run in loop :

  while true; do wc -l teste.mp3; sleep 0.5; done;

  test.mp3 file keeps 0 rows, until has 256k size...

  I have no idea how to workaround that, to get the real time file size for each 1k that ffmpeg get from stream with those codecs, does you guys have any idea how can I handle that ?

  Thanks !!!!

• lavc/vaapi_encode : add support for maxframesize

  5 mai 2022, par Linjie Fu

  lavc/vaapi_encode : add support for maxframesize
  Add support for max frame size :
  
      - max_frame_size (bytes) to indicate the max allowed size for frame.
  Control each encoded frame size into target limitation size by adjusting
  
  whole frame's average QP value. The driver will use multi passes to
  
  adjust average QP setp by step to achieve the target, and the result
  
  may not strictly guaranteed. Frame size may exceed target alone with
  
  using the maximum average QP value. The failure always happens on the
  
  intra(especially the first intra frame of a new GOP) frames or set
  
  max_frame_size with a very small number.
  example cmdline :
  
      ffmpeg -hwaccel vaapi -vaapi_device /dev/dri/renderD128 -f rawvideo \
  
          -v verbose -s:v 352x288 -i ./input.yuv -vf format=nv12,hwupload \
  
          -c:v h264_vaapi -profile:v main -g 30 -rc_mode VBR -b:v 500k   \
  
          -bf 3 -max_frame_size 40000 -vframes 100 -y ./max_frame_size.h264
  Max frame size was enabled since VA-API version (0, 33, 0), but query
  
  is available since (1, 5, 0). It will be passed as a parameter in picParam
  
  and should be set for each frame.
  Signed-off-by : Linjie Fu <linjie.fu@intel.com>
  
  Signed-off-by : Fei Wang <fei.w.wang@intel.com>
  

  • [DH] libavcodec/vaapi_encode.c
  • [DH] libavcodec/vaapi_encode.h

• Revision 84ec68d21a : mips msa configuration patch for MIPS SIMD Arch (MSA) P5600 and I6400 For P5600

  16 mars 2015, par Parag Salasakar

  Changed Paths :
   Modify /build/make/configure.sh

  
   Modify /build/make/rtcd.pl

  
   Modify /configure

  
  
  mips msa configuration patch for MIPS SIMD Arch (MSA) P5600 and I6400

  For P5600 :
  CROSS=$MTI/bin/mips-mti-linux-gnu- CFLAGS=’-EL’ CXXFLAGS=’-EL’ LDFLAGS=’-EL’\
  ../configure —target=mips32-linux-gcc —cpu=p5600 —enable-msa

  For I6400 :
  CROSS=$IMG/bin/mips-img-linux-gnu- CFLAGS=’-EL’ CXXFLAGS=’-EL’ LDFLAGS=’-EL’\
  ../configure —target=mips64-linux-gcc —cpu=i6400 —enable-msa

  Change-Id : Id25f721ea1f1991d5116e04dba713aebd7378f05