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• Truncated videos in multi input multi output ffmpeg command

  1er août 2019, par Bhupendra Fatnani

  I am trying to copy videos from a CCTV DVR server (6 channels) using rtsp. How do I optimize my ffmpeg command ?

  Below is the configuration :

  ffmpeg version : ffmpeg-4.1.4-win64-static
  CPU : Intel Core i7-8650U @1.9 GHz 2.11 GHz
  RAM : 16 GB

  When I try to download from 3 channels, the videos seem to download fine, but when I use >=4 channels simultaneously, the video from channel 1 truncates almost after about 5 secs, and the output files are much smaller from channel 2 to 4, channel 5 video output has no issues.

  For e.g. here are the output file sizes according to channels.

  Channel 1 : 1.7 MB (truncated)
  
  Channel 2 : 27.5 MB (approx 5 secs video loss in the beginning)
  
  Channel 3 : 28.5 MB (approx 3-4 secs loss)
  
  channel 4 : 29.5 MB (approx 2 secs loss)
  
  Channel 5 : 30 MB (no issues found)

  Below is the command I am trying to use to download.

  ffmpeg -rtsp_transport tcp -thread_queue_size 1024 -i rtsp://<input url="url" 1="1" /> -thread_queue_size 1024 -i rtsp://<input url="url" 2="2" /> -thread_queue_size 1024 -i rtsp://<input url="url" 3="3" /> -thread_queue_size 1024 -i rtsp://<input url="url" 4="4" /> -thread_queue_size 1024 -i rtsp://<input url="url" 5="5" /> -map 0 -vcodec copy -t 60 -y outputfile1.mp4 -map 1 -vcodec copy -t 60 -y outputfile2.mp4 -map 2 -vcodec copy -t 60 -y outputfile3.mp4 -map 3 -vcodec copy -t 60 -y outputfile4.mp4 -map 4 -vcodec copy -t 60 -y outputfile5.mp4

  Below is the actual output :

  ffmpeg version 4.1.4 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 9.1.1 (GCC) 20190716
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
  
    libavutil      56. 22.100 / 56. 22.100
  
    libavcodec     58. 35.100 / 58. 35.100
  
    libavformat    58. 20.100 / 58. 20.100
  
    libavdevice    58.  5.100 / 58.  5.100
  
    libavfilter     7. 40.101 /  7. 40.101
  
    libswscale      5.  3.100 /  5.  3.100
  
    libswresample   3.  3.100 /  3.  3.100
  
    libpostproc    55.  3.100 / 55.  3.100
  
  Input #0, rtsp, from 'rtsp://<input url="url" title="title" n="n" />A, start: 0.080000, bitrate: N/A
  
      Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080, 25 tbr, 90k tbn, 180k tbc
  
  [udp @ 000001f27c6fffc0] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
  
  [udp @ 000001f27c74f400] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
  
  [rtsp @ 000001f27c721f40] max delay reached. need to consume packet
  
  [rtsp @ 000001f27c721f40] RTP: missed 15 packets
  
  [h264 @ 000001f27d627ac0] error while decoding MB 71 49, bytestream -6
  
  [h264 @ 000001f27d627ac0] concealing 2258 DC, 2258 AC, 2258 MV errors in P frame
  
  [h264 @ 000001f27d627ac0] Increasing reorder buffer to 1
  
  Input #1, rtsp, from 'rtsp://<input url="url" title="title" n="n" />A, start: 0.040000, bitrate: N/A
  
      Stream #1:0: Video: h264 (High), yuv420p(progressive), 1920x1080, 25 tbr, 90k tbn, 180k tbc
  
  [udp @ 000001f27c6ffc40] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
  
  [udp @ 000001f27d2dc180] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
  
  [rtsp @ 000001f27d2db700] max delay reached. need to consume packet
  
  [rtsp @ 000001f27d2db700] RTP: missed 15 packets
  
  [h264 @ 000001f27d2dbd00] concealing 7337 DC, 7337 AC, 7337 MV errors in P frame
  
  [h264 @ 000001f27d2dbd00] Increasing reorder buffer to 1
  
  Input #2, rtsp, from '<input url="url" title="title" n="n" />A, start: 0.080000, bitrate: N/A
  
      Stream #2:0: Video: h264 (High), yuv420p(progressive), 1920x1080, 25 tbr, 90k tbn, 180k tbc
  
  [udp @ 000001f27c6ffd00] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
  
  [udp @ 000001f27d302bc0] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
  
  [rtsp @ 000001f27cfe9200] max delay reached. need to consume packet
  
  [rtsp @ 000001f27cfe9200] RTP: missed 44 packets
  
  [h264 @ 000001f27cfe6c40] error while decoding MB 41 24, bytestream -8
  
  [h264 @ 000001f27cfe6c40] concealing 5288 DC, 5288 AC, 5288 MV errors in P frame
  
  [h264 @ 000001f27cfe6c40] Increasing reorder buffer to 1
  
  Input #3, rtsp, from '<input url="url" title="title" n="n" />A, start: 0.080000, bitrate: N/A
  
      Stream #3:0: Video: h264 (High), yuv420p(progressive), 1920x1080, 25 tbr, 90k tbn, 180k tbc
  
  [udp @ 000001f27cfe0940] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
  
  [udp @ 000001f27dd1bec0] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
  
  [rtsp @ 000001f27daaf040] max delay reached. need to consume packet
  
  [rtsp @ 000001f27daaf040] RTP: missed 107 packets
  
  [h264 @ 000001f27dc05040] concealing 1340 DC, 1340 AC, 1340 MV errors in P frame
  
  [rtsp @ 000001f27daaf040] max delay reached. need to consume packet
  
  [rtsp @ 000001f27daaf040] RTP: missed 28 packets
  
  [h264 @ 000001f27dc05040] Increasing reorder buffer to 1
  
  [h264 @ 000001f27dc05040] concealing 6961 DC, 6961 AC, 6961 MV errors in P frame
  
  [rtsp @ 000001f27daaf040] max delay reached. need to consume packet
  
  [rtsp @ 000001f27daaf040] RTP: missed 53 packets
  
  [h264 @ 000001f27dc05040] error while decoding MB 16 40, bytestream -18
  
  [h264 @ 000001f27dc05040] concealing 3393 DC, 3393 AC, 3393 MV errors in I frame
  
  Input #4, rtsp, from 'rtsp://<input url="url" title="title" n="n" />A, start: 0.120000, bitrate: N/A
  
      Stream #4:0: Video: h264 (High), yuv420p(progressive), 1920x1080, 25 tbr, 90k tbn, 180k tbc
  
  Output #0, mp4, to 'outputfile1.mp4':
  
    Metadata:
  
      title           : -
  
      encoder         : Lavf58.20.100
  
      Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080, q=2-31, 25 tbr, 90k tbn, 90k tbc
  
  Output #1, mp4, to 'outputfile2.mp4':
  
    Metadata:
  
      title           : -
  
      encoder         : Lavf58.20.100
  
      Stream #1:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080, q=2-31, 25 tbr, 90k tbn, 90k tbc
  
  Output #2, mp4, to 'outputfile3.mp4':
  
    Metadata:
  
      title           : -
  
      encoder         : Lavf58.20.100
  
      Stream #2:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080, q=2-31, 25 tbr, 90k tbn, 90k tbc
  
  Output #3, mp4, to 'outputfile4.mp4':
  
    Metadata:
  
      title           : -
  
      encoder         : Lavf58.20.100
  
      Stream #3:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080, q=2-31, 25 tbr, 90k tbn, 90k tbc
  
  Output #4, mp4, to 'outputfile5.mp4':
  
    Metadata:
  
      title           : -
  
      encoder         : Lavf58.20.100
  
      Stream #4:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080, q=2-31, 25 tbr, 90k tbn, 90k tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #1:0 -> #1:0 (copy)
  
    Stream #2:0 -> #2:0 (copy)
  
    Stream #3:0 -> #3:0 (copy)
  
    Stream #4:0 -> #4:0 (copy)
  
  Press [q] to stop, [?] for help
  
  [mp4 @ 000001f27dd0d8c0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
  
  [mp4 @ 000001f27dd09040] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
  
  [mp4 @ 000001f27dd09040] pts has no value
  
  [mp4 @ 000001f27dc054c0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
  
  [mp4 @ 000001f27dc054c0] pts has no value
  
  [mp4 @ 000001f27ddf86c0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
  
  [mp4 @ 000001f27ddf86c0] pts has no value
  
  [mp4 @ 000001f27c743b00] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
  
  [mp4 @ 000001f27c743b00] pts has no value
  
  [mp4 @ 000001f27dd0d8c0] Non-monotonous DTS in output stream 0:0; previous: 0, current: 0; changing to 1. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 000001f27dd09040] Non-monotonous DTS in output stream 1:0; previous: 0, current: 0; changing to 1. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 000001f27dc054c0] Non-monotonous DTS in output stream 2:0; previous: 0, current: 0; changing to 1. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 000001f27ddf86c0] Non-monotonous DTS in output stream 3:0; previous: 0, current: 0; changing to 1. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 000001f27c743b00] Non-monotonous DTS in output stream 4:0; previous: 0, current: 0; changing to 1. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 000001f27dd09040] Non-monotonous DTS in output stream 1:0; previous: 1, current: 0; changing to 2. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 000001f27dc054c0] Non-monotonous DTS in output stream 2:0; previous: 1, current: 0; changing to 2. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 000001f27ddf86c0] Non-monotonous DTS in output stream 3:0; previous: 1, current: 0; changing to 2. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 000001f27c743b00] Non-monotonous DTS in output stream 4:0; previous: 1, current: 0; changing to 2. This may result in incorrect timestamps in the output file.
  
  [rtsp @ 000001f27d2db700] max delay reached. need to consume packet
  
  [rtsp @ 000001f27d2db700] RTP: missed 1644 packets
  
  [rtsp @ 000001f27c721f40] max delay reached. need to consume packet
  
  [rtsp @ 000001f27c721f40] RTP: missed 2461 packets
  
  [rtsp @ 000001f27cfe9200] max delay reached. need to consume packet
  
  [rtsp @ 000001f27cfe9200] RTP: missed 733 packets
  
  frame=   46 fps=0.8 q=-1.0 Lq=-1.0 q=-1.0 q=-1.0 q=-1.0 size=    1790kB time=00:00:59.99 bitrate= 244.4kbits/s speed=1.04x
  
  video:119011kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

  Could somebody please help me optimize the ffmpeg command ?

• Anomalie #4364 : MYSQL 5.7 - Erreurs avec les dates à 0

  2 août 2019, par cedric -

  Mais le problème principal c’est qu’on utilise aussi des dates floues de type 2019-06-00 ou meme 2019-00-00 quand le jour ou le mois ne sont pas connus.
  Ce n’est pas accepté non plus par le mode strict de mySQL mais pour le coup c’est bien plus compliqué à gérer pour ne pas perdre la feature
  Chez moi j’ai changé le sql mode par défaut dans le my.ini (ou équivalent mariaDB)

• ffmpeg avcodec_send_packet/avcodec_receive_frame memory leak

  23 janvier 2019, par G Hamlin

  I’m attempting to decode frames, but memory usage grows with every frame (more specifically, with every call to avcodec_send_packet) until finally the code crashes with a bad_alloc. Here’s the basic decode loop :

  int rfret = 0;
  
  while((rfret = av_read_frame(inctx.get(), &packet)) >= 0){
  
      if (packet.stream_index == vstrm_idx) {
  
  
  
          //std::cout << "Sending Packet" << std::endl;
  
          int ret = avcodec_send_packet(ctx.get(), &packet);
  
          if (ret < 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
  
              std::cout << "avcodec_send_packet: " << ret << std::endl;
  
              break;
  
          }
  
  
  
          while (ret  >= 0) {
  
              //std::cout << "Receiving Frame" << std::endl;
  
              ret = avcodec_receive_frame(ctx.get(), fr);
  
              if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
  
                  //std::cout << "avcodec_receive_frame: " << ret << std::endl;
  
                  av_frame_unref(fr);
  
                  // av_frame_free(&fr);
  
                  break;
  
              }
  
  
  
              std::cout << "frame: " << ctx->frame_number << std::endl;
  
  
  
              // eventually do something with the frame here...
  
  
  
              av_frame_unref(fr);
  
              // av_frame_free(&fr);
  
          }
  
      }
  
      else {
  
          //std::cout << "Not Video" << std::endl;
  
      }
  
      av_packet_unref(&packet);
  
  }

  Memory usage/leakage seems to scale with the resolution of the video I’m decoding. For example, for a 3840x2160 resolution video, the memory usage in windows task manager consistently jumps up by about 8mb (1 byte per pixel ??) for each received frame. Do I need to do something besides call av_frame_unref to release the memory ?

  (more) complete code below

  ---

  void AVFormatContextDeleter(AVFormatContext* ptr)
  
  {
  
      if (ptr) {
  
          avformat_close_input(&ptr);
  
      }
  
  }
  
  
  
  void AVCodecContextDeleter(AVCodecContext* ptr)
  
  {
  
      if (ptr) {
  
          avcodec_free_context(&ptr);
  
      }
  
  }
  
  
  
  typedef std::unique_ptr AVFormatContextPtr;
  
  typedef std::unique_ptr AVCodecContextPtr;
  
  
  
  AVCodecContextPtr createAvCodecContext(AVCodec *vcodec)
  
  {
  
      AVCodecContextPtr ctx(avcodec_alloc_context3(vcodec), AVCodecContextDeleter);
  
      return ctx;
  
  }
  
  
  
  AVFormatContextPtr createFormatContext(const std::string& filename)
  
  {
  
      AVFormatContext* inctxPtr = nullptr;
  
      int ret = avformat_open_input(&inctxPtr, filename.c_str(), nullptr, nullptr);
  
      //    int ret = avformat_open_input(&inctx, "D:/Videos/test.mp4", nullptr, nullptr);
  
      if (ret != 0) {
  
          inctxPtr = nullptr;
  
      }
  
  
  
      return AVFormatContextPtr(inctxPtr, AVFormatContextDeleter);
  
  }
  
  
  
  int testDecode()
  
  {
  
      // open input file context
  
      AVFormatContextPtr inctx = createFormatContext("D:/Videos/Matt Chapman Hi Greg.MOV");
  
  
  
      if (!inctx) {
  
          // std::cerr << "fail to avforamt_open_input(\"" << infile << "\"): ret=" << ret;
  
          return 1;
  
      }
  
  
  
      // retrieve input stream information
  
      int ret = avformat_find_stream_info(inctx.get(), nullptr);
  
      if (ret < 0) {
  
          //std::cerr << "fail to avformat_find_stream_info: ret=" << ret;
  
          return 2;
  
      }
  
  
  
      // find primary video stream
  
      AVCodec* vcodec = nullptr;
  
      const int vstrm_idx = av_find_best_stream(inctx.get(), AVMEDIA_TYPE_VIDEO, -1, -1, &vcodec, 0);
  
      if (vstrm_idx < 0) {
  
          //std::cerr << "fail to av_find_best_stream: vstrm_idx=" << vstrm_idx;
  
          return 3;
  
      }
  
  
  
      AVCodecParameters* origin_par = inctx->streams[vstrm_idx]->codecpar;
  
      if (vcodec == nullptr) {  // is this even necessary?
  
          vcodec = avcodec_find_decoder(origin_par->codec_id);
  
          if (!vcodec) {
  
              // Can't find decoder
  
              return 4;
  
          }
  
      }
  
  
  
      AVCodecContextPtr ctx = createAvCodecContext(vcodec);
  
      if (!ctx) {
  
          return 5;
  
      }
  
  
  
      ret = avcodec_parameters_to_context(ctx.get(), origin_par);
  
      if (ret) {
  
          return 6;
  
      }
  
  
  
      ret = avcodec_open2(ctx.get(), vcodec, nullptr);
  
      if (ret < 0) {
  
          return 7;
  
      }
  
  
  
      //print input video stream informataion
  
      std::cout
  
              //<< "infile: " << infile << "\n"
  
              << "format: " << inctx->iformat->name << "\n"
  
              << "vcodec: " << vcodec->name << "\n"
  
              << "size:   " << origin_par->width << 'x' << origin_par->height << "\n"
  
              << "fps:    " << av_q2d(ctx->framerate) << " [fps]\n"
  
              << "length: " << av_rescale_q(inctx->duration, ctx->time_base, {1,1000}) / 1000. << " [sec]\n"
  
              << "pixfmt: " << av_get_pix_fmt_name(ctx->pix_fmt) << "\n"
  
              << "frame:  " << inctx->streams[vstrm_idx]->nb_frames << "\n"
  
              << std::flush;
  
  
  
  
  
      AVPacket packet;
  
  
  
      av_init_packet(&packet);
  
      packet.data = nullptr;
  
      packet.size = 0;
  
  
  
      AVFrame *fr = av_frame_alloc();
  
      if (!fr) {
  
          return 8;
  
      }
  
  
  
      int rfret = 0;
  
      while((rfret = av_read_frame(inctx.get(), &packet)) >= 0){
  
          if (packet.stream_index == vstrm_idx) {
  
  
  
              //std::cout << "Sending Packet" << std::endl;
  
              int ret = avcodec_send_packet(ctx.get(), &packet);
  
              if (ret < 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
  
                  std::cout << "avcodec_send_packet: " << ret << std::endl;
  
                  break;
  
              }
  
  
  
              while (ret  >= 0) {
  
                  //std::cout << "Receiving Frame" << std::endl;
  
                  ret = avcodec_receive_frame(ctx.get(), fr);
  
                  if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
  
                      //std::cout << "avcodec_receive_frame: " << ret << std::endl;
  
                      av_frame_unref(fr);
  
                      // av_frame_free(&fr);
  
                      break;
  
                  }
  
  
  
                  std::cout << "frame: " << ctx->frame_number << std::endl;
  
  
  
                  // do something with the frame here...
  
  
  
                  av_frame_unref(fr);
  
                  // av_frame_free(&fr);
  
              }
  
          }
  
          else {
  
              //std::cout << "Not Video" << std::endl;
  
          }
  
          av_packet_unref(&packet);
  
      }
  
  
  
      std::cout << "RFRET = " << rfret << std::endl;
  
  
  
      return 0;
  
  }

  Update 1 : (1/21/2019) Compiling on a different machine and running with different video files I am not seeing the memory usage growing without bound. I’ll try to narrow down where the difference lies (compiler ?, ffmpeg version ?, or video encoding ?)

  Update 2 : (1/21/2019) Ok, it looks like there is some interaction occurring between ffmpeg and Qt’s QCamera. In my application, I’m using Qt to manage the webcam, but decided to use ffmpeg libraries to handle decoding/encoding since Qt doesn’t have as comprehensive support for different codecs. If I have the camera turned on (through Qt), ffmpeg decoding memory consumption grows without bound. If the camera is off, ffmpeg behaves fine. I’ve tried this both with a physical camera (Logitech C920) and with a virtual camera using OBS-Virtualcam, with the same result. So far I’m baffled as to how the two systems are interacting...