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• avcodec/cfhd : Add support for 12-bit RGBA.

  27 février 2016, par Kieran Kunhya

  avcodec/cfhd : Add support for 12-bit RGBA.
  Plays all known samples
  

  • [DH] libavcodec/cfhd.c

• Encoding a readable movie by QuickTime using FFMPEG

  3 octobre 2014, par itamarb

  I’m trying to encode an image sequence using the following command :

  ffmpeg.exe -i %d.png -f mp4 -vcodec h264 test.mp4

  However, QuickTime failed to open this file or sometimes play a black movie, while this movie plays great in VLC player. Any suggestions how to make it play well in QuickTime ?

  Here is the output :

  ffmpeg.exe -i %d.png -f mp4 -vcodec libx264 13.mp4
  
  ffmpeg version N-49044-g89afa63 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Jan 19 2013 20:36:06 with gcc 4.7.2 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
  
  le-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libg
  
  sm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --e
  
  nable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --e
  
  nable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --en
  
  able-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable
  
  -libxavs --enable-libxvid --enable-zlib --enable-filter=frei0r
  
    libavutil      52. 15.100 / 52. 15.100
  
    libavcodec     54. 89.100 / 54. 89.100
  
    libavformat    54. 61.101 / 54. 61.101
  
    libavdevice    54.  3.102 / 54.  3.102
  
    libavfilter     3. 32.101 /  3. 32.101
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  [image2 @ 0221b940] max_analyze_duration 5000000 reached at 5000000 microseconds
  
  
  
  Input #0, image2, from '%d.png':
  
    Duration: 00:01:19.36, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: png, rgb24, 639x480, 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  [libx264 @ 0221edc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE
  
  4.2 AVX
  
  [libx264 @ 0221edc0] profile High 4:4:4 Predictive, level 3.0, 4:4:4 8-bit
  
  [libx264 @ 0221edc0] 264 - core 129 r2230 1cffe9f - H.264/MPEG-4 AVC codec - Cop
  
  yleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deb
  
  lock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 m
  
  e_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chro
  
  ma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 in
  
  terlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b
  
  _bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecu
  
  t=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0
  
   qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to '13.mp4':
  
    Metadata:
  
      encoder         : Lavf54.61.101
  
      Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv444p, 639x480, q=-1--1
  
  , 12800 tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (png -> libx264)
  
  Press [q] to stop, [?] for help
  
  frame=   76 fps=0.0 q=28.0 size=       3kB time=00:00:00.96 bitrate=  22.3kbits/
  
  frame=  156 fps=155 q=28.0 size=       7kB time=00:00:04.16 bitrate=  14.7kbits/
  
  frame=  219 fps=145 q=28.0 size=      12kB time=00:00:06.68 bitrate=  14.1kbits/
  
  frame=  283 fps=141 q=28.0 size=      16kB time=00:00:09.24 bitrate=  14.2kbits/
  
  frame=  352 fps=140 q=28.0 size=      25kB time=00:00:12.00 bitrate=  17.4kbits/

• FFmpeg memory leak

  10 septembre 2015, par Spamdark

  I have developed just a simple library modifing a library that I found on the internet.

  What scares me, is that, when I play an avi, it plays and free the memory when the video ends, but when I play the video, it’s like a memory leak ! It grows to 138mb although the video has ended and the FreeAll method (A function that deletes the context, etc...) has been called.

  Here is the code of the method that is causing the memory leak :

  int VideoGL::NextVideoFrame(){
  
  int frameDone = 0;
  
  int result = 0;
  
  double pts = 0;
  
  
  
  if(!this->ended){
  
  
  
  if (!_started) return 0;
  
  AVPacket* packet;
  
  
  
  // Get the number of milliseconds passed and see if we should display a new frame
  
  int64_t msPassed = (1000 * (clock() - _baseTime)) / CLOCKS_PER_SEC;
  
  if (msPassed >= _currentPts)
  
  {
  
      // If this is not the current frame, copy it to the buffer
  
      if (_currentFramePts != _currentPts){
  
          _currentFramePts = _currentPts;
  
          memcpy(buffer_a,buffer, 3 * _codec_context_video->width * _codec_context_video->height);
  
          result = 1;
  
      }
  
  
  
      // Try to load a new frame from the video packet queue
  
      bool goodop=false;
  
      AVFrame *_n_frame = avcodec_alloc_frame();
  
      while (!frameDone && (packet = this->DEQUEUE(VIDEO)) != NULL)
  
      {
  
          if (packet == (AVPacket*)-1) return -1;
  
  
  
          goodop=true;
  
  
  
          _s_pts = packet->pts;
  
          avcodec_decode_video2(_codec_context_video, _n_frame, &frameDone, packet);
  
          av_free_packet(packet);
  
  
  
          if (packet->dts == AV_NOPTS_VALUE)
  
          {
  
              if (_n_frame->opaque && *(uint64_t*)_n_frame->opaque != AV_NOPTS_VALUE) pts = (double) *(uint64_t*)_n_frame->opaque;
  
              else pts = 0;
  
          }
  
          else pts = (double) packet->dts;
  
  
  
          pts *= av_q2d(_codec_context_video->time_base);
  
  
  
      }
  
  
  
      if (frameDone)
  
      {
  
          // if a frame was loaded scale it to the current texture frame buffer, but also set the pts so that it won't be copied to the texture until it's time
  
          sws_scale(sws_ctx,_n_frame->data, _n_frame->linesize, 0, _codec_context_video->height, _rgb_frame->data, _rgb_frame->linesize);
  
  
  
  
  
          double nts = 1.0/av_q2d(_codec_context_video->time_base);
  
          _currentPts = (uint64_t) (pts*nts);
  
  
  
      }
  
  
  
      avcodec_free_frame(&_n_frame);
  
      av_free(_n_frame);
  
  
  
      if(!goodop){
  
          ended=true;
  
      }
  
  }
  
  }
  
  
  
  return result;
  
  }

  I’ll be waiting for answers, thanks.