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• Not able to change H264 profile to High from Main using FFMPEG API

  7 juin 2015, par AsG

  I am using QtFFMPEG wrapper(https://code.google.com/p/qtffmpegwrapper/) with Qt 5.4 and MSCV 2012. I want to encode a mp4 video from image files at 25 fps and high profile.
  I used the createFile() and encodeImage() functions from here

  I am using the below parameters :

  pCodecCtx=pVideoStream->codec;
  
  pCodecCtx->codec_id = pOutputFormat->video_codec;
  
  pCodecCtx->codec_type = ffmpeg::AVMEDIA_TYPE_VIDEO;
  
  pCodecCtx->profile=FF_PROFILE_H264_HIGH;
  
  pCodecCtx->bit_rate = Bitrate;
  
  pCodecCtx->width = getWidth();
  
  pCodecCtx->height = getHeight();
  
  pCodecCtx->time_base.den = fps;
  
  pCodecCtx->time_base.num = 1;
  
  pCodecCtx->gop_size = 10;
  
  pCodecCtx->pix_fmt = ffmpeg::PIX_FMT_YUV420P;
  
  pCodecCtx->qmin = 10;
  
  pCodecCtx->qmax = 51;

  The FFMPEG variables are :

  License: %s
  
   GPL version 3 or later
  
  AVCodec version %d
  
   3476480
  
  AVFormat configuration: %s
  
   --disable-static --enable-shared --enable-gpl --enable-version3 --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib

  Now I currently get a video with below properties :

  ID                             : 1
  
  Format                         : AVC
  
  Format/Info                    : Advanced Video Codec
  
  Format profile                 : Main@L3.2
  
  Format settings, CABAC         : No
  
  Format settings, ReFrames      : 1 frame
  
  Format settings, GOP           : M=1, N=10
  
  Codec ID                       : avc1
  
  Codec ID/Info                  : Advanced Video Coding
  
  Duration                       : 4s 320ms

  I want the profile to be "High" and the CABAC to be yes with 3 ReFrames. How do I achieve that ? I tried setting the profile, coder_type and max_b_frames but did not help. At times the generated file did not even play. Can anyone help please. Thanks.

  I also tried using the av_opt_set() way but could not find that function. Only function I have is av_opt_set_dict(), am I missing something - outdated FFMPEG or missing #include.

  Tried this too, didnt help-

     ffmpeg::AVDictionary *opt = NULL;
  
     int iRes = av_dict_set(&opt, "profile", "high", 0);
  
     av_opt_set_dict(pFormatCtx->priv_data, &opt);
  
     av_opt_set_dict(pFormatCtx, &opt);

  Please help.

  EDIT :
  I got a high quality mp4 by changing the qmin and qmax values and then reencoding the big sized output via command line. I will try to upgrade the FFMPEG as suggested by Ronald below. Please consider the question closed for now.

• Revision 7c0c62df1d : Correctly report "Unsupported bitstream profile" For vp9 decoder build without

  17 juillet 2015, par Yaowu Xu

  Changed Paths :
   Modify /test/decode_api_test.cc

  
   Modify /test/invalid_file_test.cc

  
   Modify /vp9/decoder/vp9_decodeframe.c

  
  
  Correctly report "Unsupported bitstream profile"

  For vp9 decoder build without profile 2 and profile 3 support, this
  commit changes to report error "Unsupported bitstream profile" for
  input streams in profile 2 or 3, rather than other misleading error
  information.

  In addition, one of the invalid files in unit tests is actually coded
  profile 2, this commit makes it tested only when the decoder is built
  with vp9-highbitdepth.

  This fixes issue #1028.

  Change-Id : I8b6c1210787c8f89c703a546687dcf973ac20fc0

• PHP Shell Excution of ffmpeg Not Reading Bash Profile

  25 juillet 2015, par Searay330

  I understand that is a odd question and may be very specific, but I recently installed ffmpeg on a shared hosting service. While I can execute all tasks from an SSH console, when making the exact same call in PHP, I get this error.

  error while loading shared libraries : libavdevice.so.56 : cannot open shared object file : No such file or directory

  It did the same thing in PuTTY, until I updated the ~/.bash_profile with this line :

  export LD_LIBRARY_PATH=/home/searay330/ffmpeg/lib

  Does PHP not use ~/.bash_profile, or is there a different file that needs to be updated ? Any information on this topic is greatly appreciated, thank you.