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• ffmpeg concat : "Unsafe file name"

  17 août 2016, par sers

  Trying to convert a bunch of mts-files into a big mp4-file :

  stephan@rechenmonster:/mnt/backupsystem/archive2/Videos/20151222/PRIVATE/AVCHD/BDMV$ ~/bin/ffmpeg-git-20160817-64bit-static/ffmpeg -v info -f concat -i <(find STREAM -name '*' -printf "file '$PWD/%p'\n") -deinterlace -r 25 -s hd720 -c:v libx264 -crf 23 -acodec copy -strict -2 ~/tmp/Videos/20151222.mp4
  
  ffmpeg version N-81364-gf85842b-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 5.4.1 (Debian 5.4.1-1) 20160803
  
    configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-fontconfig --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --enable-libopus --enable-libass --enable-gnutls --enable-libvidstab --enable-libsoxr --enable-frei0r --enable-libfribidi --disable-indev=sndio --disable-outdev=sndio --enable-librtmp --enable-libmfx --enable-libzimg --cc=gcc-5
  
    libavutil      55. 28.100 / 55. 28.100
  
    libavcodec     57. 53.100 / 57. 53.100
  
    libavformat    57. 46.101 / 57. 46.101
  
    libavdevice    57.  0.102 / 57.  0.102
  
    libavfilter     6. 51.100 /  6. 51.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  1.100 /  2.  1.100
  
    libpostproc    54.  0.100 / 54.  0.100
  
  [concat @ 0x56054a0] Unsafe file name '/mnt/backupsystem/archive2/Videos/20151222/PRIVATE/AVCHD/BDMV/STREAM'
  
  /dev/fd/63: Operation not permitted

  Any ideas what goes wrong here ? What does the term "unsafe file" mean in this context ?

  Thanks,
  Stephan

• ubuntu "make" can't find standard c libraries

  22 mai 2018, par Karthik Uday Kiran

  For the past few days, I was trying to configure ffmpeg for android in ubunut system.

  I’ve configured the ffmpeg but when i try to make using the command
  make -j3

  The error read :

  No such file or directory #include
  enter image description here

• FFmpeg "movflags" > "faststart" causes av_write_trailer() to return -2

  30 juin 2016, par williamtroup

  I’m setting up the format layout for the ideo as follows :

  AVOutputFormat* outputFormat = ffmpeg.av_guess_format(null, "output.mp4", null);
  
  
  
  AVCodec* videoCodec = ffmpeg.avcodec_find_encoder(outputFormat->video_codec);
  
  
  
  AVFormatContext* formatContext = ffmpeg.avformat_alloc_context();
  
  formatContext->oformat = outputFormat;
  
  formatContext->video_codec_id = videoCodec->id;
  
  
  
  ffmpeg.avformat_new_stream(formatContext, videoCodec);

  This is how I am setting up the Codec Context :

  AVCodecContext* codecContext = ffmpeg.avcodec_alloc_context3(videoCodec);
  
  codecContext->bit_rate = 400000;
  
  codecContext->width = 1280;
  
  codecContext->height = 720;
  
  codecContext->gop_size = 12;
  
  codecContext->max_b_frames = 1;
  
  codecContext->pix_fmt = videoCodec->pix_fmts[0];
  
  codecContext->codec_id = videoCodec->id;
  
  codecContext->codec_type = videoCodec->type;
  
  codecContext->time_base = new AVRational
  
  {
  
      num = 1,
  
      den = 30
  
  };

  I’m using the following code to setup the "movflags" > "faststart" option for the header of the video :

  AVDictionary* options = null;
  
  
  
  int result = ffmpeg.av_dict_set(&options, "movflags", "faststart", 0);
  
  
  
  int writeHeaderResult = ffmpeg.avformat_write_header(formatContext, &options);

  The file is opened and the header is written as follows :

  if ((formatContext->oformat->flags & ffmpeg.AVFMT_NOFILE) == 0)
  
  {
  
      int ioOptionResult = ffmpeg.avio_open(&formatContext->pb, "output.mp4", ffmpeg.AVIO_FLAG_WRITE);
  
  }
  
  
  
  int writeHeaderResult = ffmpeg.avformat_write_header(formatContext, &options);

  After this, I write each video frame as follows :

  outputFrame->pts = frameIndex;
  
  
  
  packet.flags |= ffmpeg.AV_PKT_FLAG_KEY;
  
  packet.pts = frameIndex;
  
  packet.dts = frameIndex;
  
  
  
  int encodedFrame = 0;
  
  int encodeVideoResult = ffmpeg.avcodec_encode_video2(codecContext, &packet, outputFrame, &encodedFrame);
  
  
  
  if (encodedFrame != 0)
  
  {
  
      packet.pts = ffmpeg.av_rescale_q(packet.pts, codecContext->time_base, m_videoStream->time_base);
  
      packet.dts = ffmpeg.av_rescale_q(packet.dts, codecContext->time_base, m_videoStream->time_base);
  
      packet.stream_index = m_videoStream->index;
  
  
  
      if (codecContext->coded_frame->key_frame > 0)
  
      {
  
          packet.flags |= ffmpeg.AV_PKT_FLAG_KEY;
  
      }
  
  
  
      int writeFrameResult = ffmpeg.av_interleaved_write_frame(formatContext, &packet);
  
  }

  After that, I write the trailer :

  int writeTrailerResult = ffmpeg.av_write_trailer(formatContext);

  However, writeTrailerResult is always -2. I’m been looking into this problem for days and cannot figure out what the problem is.

  The DLLs used for the AutoGen library are :

  avcodec-56.dll
  
  avdevice-56.dll
  
  avfilter-5.dll
  
  avformat-56.dll
  
  avutil-54.dll
  
  postproc-53.dll
  
  swresample-1.dll
  
  swscale-3.dll