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• ffmpeg - extract timecode start metadata from tmcd track to a drawtext filter

  3 mars 2015, par mwjb

  I have a Quicktime file with a timecode track. I’m encoding it to a new video codec and would like to burnin the timecode from timecode track. Setting the timecode manually isn’t an option as this will be used for many files with unique starting timecodes.

  This is the current work-in-progress ffmpeg command. Obviously I need to find a way to extract the metadate:timecode value and have this start the timecode count instead of the manual entry seen below :

  ffmpeg -i infile.mov -y -c:v mjpeg -qscale:v 4 -vendor ap10 -pix_fmt yuvj422p -s 1280x720 -vf drawtext="fontfile=thefont.ttf: timecode='01\:00\:00\:00': rate=24: fontsize=40: fontcolor=white: boxcolor=black: box=1: x=1700: y=80" outfile.mov

  The Timecode metadata is there in the Stream #0:1 track, as read by ffmpeg :

  ffmpeg version 2.5.2 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jan  1 2015 20:24:48 with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
  
  configuration: --prefix=/Volumes/tempdisk/sw --as=yasm --enable-gpl --enable-pthreads --disable-ffplay --disable-ffserver --disable-shared --enable-static --enable-libvpx --disable-decoder=libvpx --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libx265 --enable-libxvid --enable-zlib --enable-avfilter --enable-fontconfig --enable-libfreetype --enable-libass --enable-libutvideo --enable-filters --enable-postproc --enable-runtime-cpudetect
  
  libavutil      54. 15.100 / 54. 15.100
  
  libavcodec     56. 13.100 / 56. 13.100
  
  libavformat    56. 15.102 / 56. 15.102
  
  libavdevice    56.  3.100 / 56.  3.100
  
  libavfilter     5.  2.103 /  5.  2.103
  
  libswscale      3.  1.101 /  3.  1.101
  
  libswresample   1.  1.100 /  1.  1.100
  
  libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'infile.mov':
  
    Metadata:
  
  major_brand     : qt  
  
  minor_version   : 537199360
  
  compatible_brands: qt  
  
  creation_time   : 2015-03-02 22:06:00
  
  timecode        : 06:00:00:00
  
  Duration: 00:20:00.00, start: 0.000000, bitrate: 36175 kb/s
  
  Stream #0:0(eng): Video: dnxhd (AVdn / 0x6E645641), yuv422p, 1920x1080, 36175 kb/s, 24 fps, 24 tbr, 24k tbn, 24k tbc (default)
  
  Metadata:
  
    creation_time   : 2015-03-02 22:06:00
  
    handler_name    : Apple Alias Data Handler
  
    encoder         : Avid DNxHD Codec
  
  Stream #0:1(eng): Data: none (tmcd / 0x64636D74) (default)
  
  Metadata:
  
    creation_time   : 2015-03-02 22:06:58
  
    handler_name    : Apple Alias Data Handler
  
    timecode        : 06:00:00:00

  I came across this post ffmpeg and timecode from movie metadata which appeared to be on the same sort of track as I’m on. Would certainly appreciate some guidance on this. Many Thanks.

• How to pipe output from ffmpeg

  27 février 2015, par Andrew Simpson

  I have a c# desktop app.

  I want to stream an RTSP feed from my camera to my app, and in my app save jpegs as they come through.

  I use mpdecimate to restrict frames that are changes to the previous frame.

  If I open a DOS windows and type in :

  ffmpeg -i rtsp://admin:admin@192.168.0.17:554/video_0 -vf mpdecimate -r 10 output.avi 2>log.txt 

  it works.

  if I put this into a C# app the log file reports :

     ffmpeg version N-69779-g2a72b16 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.9.2 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
  
    libavutil      54. 18.100 / 54. 18.100
  
    libavcodec     56. 22.100 / 56. 22.100
  
    libavformat    56. 21.100 / 56. 21.100
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.100 /  5. 11.100
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, rtsp, from 'rtsp://admin:admin@192.168.0.17:554/video_0':
  
    Metadata:
  
      title           : YOKO Live Streaming
  
      comment         : video_0
  
    Duration: N/A, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 352x288 [SAR 1:1 DAR 11:9], 90k tbr, 90k tbn, 90k tbc
  
  [NULL @ 04d6a1e0] Unable to find a suitable output format for 'mpdecimate'
  
  mpdecimate: Invalid argument

  So, I tweaked it with things I thought would make it work but still teh same error.

  This is my last attempt at this :

  Process process = new Process();
  
  {
  
      FileStream baseStream = null;  
  
      string arguments = "-i rtsp://admin:admin@192.168.0.17:554/video_0 -vf image2pipe mpdecimate -r 10 - 0";
  
      string file = @"C:\bin\ffmpeg.exe";
  
      process.StartInfo.FileName = file;
  
      process.StartInfo.Arguments = arguments;
  
      process.StartInfo.CreateNoWindow = true;
  
      process.StartInfo.RedirectStandardError = true;
  
      process.StartInfo.RedirectStandardOutput = true;
  
      process.StartInfo.UseShellExecute = false;
  
      Task.Run(() =>
  
      {
  
          try
  
          {
  
              process.Start();
  
              byte[] buffer = new byte[200000];
  
              var error = process.StandardError.ReadToEnd();
  
              baseStream = process.StandardOutput.BaseStream as FileStream;
  
              bool gotHeader = false;
  
              bool imgFound = false;
  
              int counter = 0;
  
              while (true)
  
              {
  
                  byte bit1 = (byte)baseStream.ReadByte();
  
                  buffer[counter] = bit1;
  
                  if (bit1 == 217 && gotHeader)
  
                  {
  
                      if (buffer[counter - 1] == 255)
  
                      {
  
                          byte[] jpeg = new byte[counter];
  
                          Buffer.BlockCopy(buffer, 0, jpeg, 0, counter);
  
                          using (MemoryStream ms = new MemoryStream(jpeg))
  
                          {
  
                              pictureBox1.Image = Image.FromStream(ms);
  
                              ms.Close();
  
                          }
  
                          imgFound = true;
  
                      }
  
                  }
  
                  else if (bit1 == 216)
  
                  {
  
                      if (buffer[counter - 1] == 255)
  
                      {
  
                          gotHeader = true;
  
                      }
  
                  }
  
                  if (imgFound)
  
                  {
  
                      counter = 0;
  
                      buffer = new byte[200000];
  
                      imgFound = false;
  
                      gotHeader = false;
  
                  }
  
                  else
  
                  {
  
                      counter++;
  
                  }
  
              }
  
          }
  
          catch (Exception ex2)
  
          {
  
              //log error here
  
          }
  
      });
  
  }
  
  catch (Exception ex)
  
  {
  
      //log error here
  
  }

  any suggestion I will glady try out...

• Installing GPAC's player - Errors

  25 janvier 2016, par VirMarGu

  I am working with Ubuntu 14.04 LTS 64 bits.
  I am trying to compile and install GPAC’s player (Osmo) in its latest version.

  I had an installed version, but I have tried to compile one new and finally, the previous one doesn’t already work fine.

  I have made the following steps :

  1. sudo apt-get install git
  
  
  
  2. git clone https://github.com/gpac/gpac.git
  
  
  
  3. sudo apt-get install subversion make pkg-config g++ zlib1g-dev libfreetype6-dev libjpeg62-dev libpng12-dev libopenjpeg-dev
  
  libmad0-dev libfaad-dev libogg-dev libvorbis-dev libtheora-dev
  
  liba52-0.7.4-dev libavcodec-dev libavformat-dev libavutil-dev
  
  libswscale-dev libavresample-dev libxv-dev x11proto-video-dev
  
  libgl1-mesa-dev x11proto-gl-dev linux-sound-base libxvidcore-dev
  
  libssl-dev libjack-dev libasound2-dev libpulse-dev libsdl1.2-dev
  
  dvb-apps libavcodec-extra libavdevice-dev libmozjs185-dev
  
  
  
  4. cd gpac
  
  
  
  5. ./configure

  The output of the previous execution is :

  ** System Configuration
  
  Install prefix: /usr/local
  
  Source path: /home/vmg/gpac
  
  C   compiler: gcc
  
  C++ compiler: g++
  
  make: make
  
  CPU: x86_64
  
  Big Endian: no
  
  
  
  ** GPAC 0.5.2-DEV rev1167-gaef2bf4-master Core Configuration **
  
  debug version: no
  
  GProf enabled: no
  
  Static build enabled: no
  
  Memory tracking enabled: no
  
  Fixed-Point Version: no
  
  IPV6 Support: yes
  
  Static Modules: no
  
  
  
  ** Detected libraries **
  
  zlib: system
  
  OSS Audio: yes
  
  ALSA Audio: yes
  
  Jack Audio: yes
  
  PulseAudio Audio: yes
  
  DirectFB support: no
  
  X11 Shared Memory support: yes (path: /usr/X11R6)
  
  X11 XVideo support: yes
  
  SDL Support: yes
  
  OpenGL support: yes
  
  TinyGL support: no
  
  OpenSSL support: yes
  
  Mozilla XUL/GECKO support: no
  
  DVB Support: yes
  
  XMLRPC Support: no
  
  wxWidgets support: no
  
  
  
  ** Extra Libraries used **
  
  SpiderMonkey: system
  
  FreeType: system
  
  JPEG: system
  
  OpenJPEG: system
  
  PNG: system
  
  MAD: system
  
  FAAD: system
  
  XVID: system
  
  FFMPEG: system
  
  Xiph OGG: system
  
  Platinum UPnP: no
  
  AVCap: no
  
  Xiph Vorbis: system
  
  Xiph Theora: system
  
  A52 (AC3): system
  
  OpenSVCDecoder: no
  
  OpenHEVCDecoder: no
  
  Freenect: no
  
  
  
  Creating config.mak
  
  config.h is unchanged
  
  Check config.log for detection failures
  
  Done - type 'make help' for make info, 'make' to build

  6. make

     make -C src all
     make[1] : Entering directory

     /home/vmg/gpac/src'
 CC utils/os_divers.c
 CC utils/os_file.c
 CC utils/list.c
 CC utils/bitstream.c
 CC utils/error.c
 CC utils/alloc.c
utils/alloc.c: In function ‘gf_asprintf’:
utils/alloc.c:868:2: warning: implicit declaration of function ‘asprintf’ [-Wimplicit-function-declaration]
 size = asprintf(strp, fmt, args);
 ^
 CC utils/url.c
 CC utils/configfile.c
 CC utils/sha1.c
 CC utils/base_encoding.c
 CC utils/os_net.c
 CC utils/os_thread.c
 CC utils/os_config_init.c
 CC utils/cache.c
utils/cache.c: In function ‘gf_cache_create_entry’:
utils/cache.c:482:10: warning: variable ‘err’ set but not used [-Wunused-but-set-variable]
  GF_Err err;
         ^
utils/cache.c:526:10: warning: variable ‘err’ set but not used [-Wunused-but-set-variable]
  GF_Err err;
         ^
 CC utils/downloader.c
utils/downloader.c: In function ‘gf_dm_connect’:
utils/downloader.c:1385:8: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
   int ret;
       ^
 CC utils/xml_parser.c
 CC utils/utf.c
 CC utils/token.c
 CC utils/color.c
 CC utils/os_module.c
 CC utils/path2d.c
 CC utils/path2d_stroker.c
 CC utils/module.c
 CC utils/uni_bidi.c
 CC utils/ringbuffer.c
 CC utils/map.c
 CC ietf/rtcp.c
 CC ietf/rtp.c
 CC ietf/rtp_packetizer.c
 CC ietf/rtp_pck_3gpp.c
 CC ietf/rtp_pck_mpeg12.c
 CC ietf/rtp_pck_mpeg4.c
 CC ietf/rtsp_command.c
 CC ietf/rtsp_common.c
 CC ietf/rtsp_response.c
 CC ietf/rtsp_session.c
 CC ietf/sdp.c
 CC ietf/rtp_depacketizer.c
 CC ietf/rtp_streamer.c
 CC bifs/arith_decoder.c
 CC bifs/bifs_codec.c
 CC bifs/bifs_node_tables.c
 CC bifs/com_dec.c
 CC bifs/com_enc.c
 CC bifs/conditional.c
 CC bifs/field_decode.c
 CC bifs/field_encode.c
 CC bifs/memory_decoder.c
 CC bifs/predictive_mffield.c
 CC bifs/quantize.c
 CC bifs/script_dec.c
 CC bifs/script_enc.c
 CC bifs/unquantize.c
 CC odf/desc_private.c
 CC odf/descriptors.c
 CC odf/odf_code.c
odf/odf_code.c: In function ‘gf_odf_write_kw’:
odf/odf_code.c:2633:9: warning: variable ‘e’ set but not used [-Wunused-but-set-variable]
 GF_Err e;
        ^
 CC odf/odf_codec.c
 CC odf/odf_command.c
odf/odf_command.c: In function ‘gf_odf_write_od_remove’:
odf/odf_command.c:171:9: warning: variable ‘e’ set but not used [-Wunused-but-set-variable]
 GF_Err e;
        ^
odf/odf_command.c: In function ‘gf_odf_del_ipmp_update’:
odf/odf_command.c:570:9: warning: variable ‘e’ set but not used [-Wunused-but-set-variable]
 GF_Err e;
        ^
 CC odf/qos.c
 CC odf/slc.c
odf/slc.c: In function ‘gf_odf_write_slc’:
odf/slc.c:261:9: warning: variable ‘e’ set but not used [-Wunused-but-set-variable]
 GF_Err e;
        ^
 CC odf/ipmpx_code.c
 CC odf/oci_codec.c
 CC odf/ipmpx_dump.c
 CC odf/ipmpx_parse.c
 CC odf/odf_dump.c
 CC odf/odf_parse.c
 CC laser/lsr_enc.c
 CC laser/lsr_dec.c
 CC laser/lsr_tables.c
 CC isomedia/avc_ext.c
 CC isomedia/box_code_3gpp.c
isomedia/box_code_3gpp.c: In function ‘styl_Write’:
isomedia/box_code_3gpp.c:641:9: warning: variable ‘e’ set but not used [-Wunused-but-set-variable]
 GF_Err e;
        ^
 CC isomedia/box_code_apple.c
 CC isomedia/box_code_base.c
isomedia/box_code_base.c: In function ‘mp4a_AddBox’:
isomedia/box_code_base.c:3511:12: warning: variable ‘e’ set but not used [-Wunused-but-set-variable]
    GF_Err e;
           ^
 CC isomedia/box_code_drm.c
isomedia/box_code_drm.c: In function ‘schm_Write’:
isomedia/box_code_drm.c:196:9: warning: variable ‘e’ set but not used [-Wunused-but-set-variable]
 GF_Err e;
        ^
 CC isomedia/box_code_meta.c
 CC isomedia/box_dump.c
 CC isomedia/box_funcs.c
 CC isomedia/data_map.c
 CC isomedia/drm_sample.c
 CC isomedia/isom_intern.c
 CC isomedia/isom_read.c
 CC isomedia/isom_store.c
 CC isomedia/isom_write.c
isomedia/isom_write.c: In function ‘gf_isom_estimate_size’:
isomedia/isom_write.c:3818:9: warning: variable ‘e’ set but not used [-Wunused-but-set-variable]
 GF_Err e;
        ^
 CC isomedia/media.c
 CC isomedia/media_odf.c
 CC isomedia/meta.c
 CC isomedia/movie_fragments.c
 CC isomedia/sample_descs.c
 CC isomedia/stbl_read.c
 CC isomedia/stbl_write.c
 CC isomedia/track.c
 CC isomedia/tx3g.c
 CC isomedia/iff.c
 CC isomedia/hint_track.c
 CC isomedia/hinting.c
 CC isomedia/box_code_adobe.c
 CC isomedia/ttml.c
 CC scene_manager/scene_manager.c
scene_manager/scene_manager.c: In function ‘gf_sm_update_bitwrapper_buffer’:
scene_manager/scene_manager.c:764:11: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result]
     fread(data, 1, data_size, f);
          ^
 CC scene_manager/text_to_bifs.c
 CC scene_manager/loader_bt.c
 CC scene_manager/loader_xmt.c
 CC scene_manager/loader_isom.c
 CC scene_manager/loader_qt.c
 CC scene_manager/loader_svg.c
 CC scene_manager/swf_parse.c
scene_manager/swf_parse.c: In function ‘swf_def_bits_jpeg’:
scene_manager/swf_parse.c:2100:10: warning: variable ‘e’ set but not used [-Wunused-but-set-variable]
  GF_Err e;
         ^
 CC scene_manager/swf_bifs.c
 CC scene_manager/swf_svg.c
 CC scene_manager/scene_dump.c
 CC scene_manager/scene_stats.c
 CC scene_manager/scene_engine.c
 CC scene_manager/encode_isom.c
 CC terminal/channel.c
 CC terminal/clock.c
 CC terminal/decoder.c
 CC terminal/term_node_init.c
 CC terminal/input_sensor.c
 CC terminal/media_control.c
 CC terminal/media_manager.c
 CC terminal/media_memory.c
 CC terminal/media_object.c
 CC terminal/media_sensor.c
 CC terminal/mpeg4_inline.c
 CC terminal/network_service.c
 CC terminal/object_browser.c
 CC terminal/object_manager.c
 CC terminal/scene.c
 CC terminal/terminal.c
 CC terminal/svg_external.c
 CC compositor/audio_input.c
 CC compositor/audio_mixer.c
 CC compositor/audio_render.c
 CC compositor/bindable.c
 CC compositor/camera.c
 CC compositor/compositor.c
 CC compositor/compositor_2d.c
 CC compositor/compositor_3d.c
 CC compositor/compositor_node_init.c
 CC compositor/drawable.c
 CC compositor/events.c
 CC compositor/font_engine.c
 CC compositor/hc_flash_shape.c
 CC compositor/hardcoded_protos.c
 CC compositor/mesh.c
 CC compositor/mesh_collide.c
 CC compositor/mesh_tesselate.c
 CC compositor/mpeg4_animstream.c
 CC compositor/mpeg4_audio.c
 CC compositor/mpeg4_background.c
 CC compositor/mpeg4_background2d.c
 CC compositor/mpeg4_bitmap.c
 CC compositor/mpeg4_composite.c
 CC compositor/mpeg4_form.c
 CC compositor/mpeg4_geometry_2d.c
 CC compositor/mpeg4_geometry_3d.c
 CC compositor/mpeg4_geometry_ifs2d.c
 CC compositor/mpeg4_geometry_ils2d.c
 CC compositor/mpeg4_gradients.c
 CC compositor/mpeg4_grouping.c
 CC compositor/mpeg4_grouping_2d.c
 CC compositor/mpeg4_grouping_3d.c
 CC compositor/mpeg4_layer_2d.c
 CC compositor/mpeg4_layer_3d.c
 CC compositor/mpeg4_layout.c
 CC compositor/mpeg4_lighting.c
 CC compositor/mpeg4_path_layout.c
 CC compositor/mpeg4_sensors.c
 CC compositor/mpeg4_sound.c
 CC compositor/mpeg4_text.c
 CC compositor/mpeg4_textures.c
 CC compositor/mpeg4_timesensor.c
 CC compositor/mpeg4_viewport.c
 CC compositor/navigate.c
 CC compositor/offscreen_cache.c
 CC compositor/svg_base.c
 CC compositor/svg_filters.c
 CC compositor/svg_font.c
 CC compositor/svg_geometry.c
 CC compositor/svg_grouping.c
 CC compositor/svg_media.c
 CC compositor/svg_paint_servers.c
 CC compositor/svg_text.c
 CC compositor/texturing.c
 CC compositor/texturing_gl.c
 CC compositor/visual_manager.c
 CC compositor/visual_manager_2d.c
 CC compositor/visual_manager_2d_draw.c
 CC compositor/visual_manager_3d.c
 CC compositor/visual_manager_3d_gl.c
 CC compositor/x3d_geometry.c
 CC scenegraph/base_scenegraph.c
 CC scenegraph/mpeg4_animators.c
 CC scenegraph/commands.c
 CC scenegraph/mpeg4_nodes.c
 CC scenegraph/mpeg4_valuator.c
 CC scenegraph/vrml_interpolators.c
 CC scenegraph/vrml_proto.c
 CC scenegraph/vrml_route.c
 CC scenegraph/vrml_script.c
 CC scenegraph/vrml_smjs.c
 CC scenegraph/vrml_tools.c
 CC scenegraph/x3d_nodes.c
 CC scenegraph/svg_attributes.c
 CC scenegraph/svg_types.c
 CC scenegraph/svg_smjs.c
 CC scenegraph/smil_anim.c
 CC scenegraph/smil_timing.c
 CC scenegraph/svg_properties.c
 CC scenegraph/dom_events.c
 CC scenegraph/dom_smjs.c
 CC scenegraph/xbl_process.c
 CC scenegraph/xml_ns.c
 CC scenegraph/html5_media_smjs.c
 CC scenegraph/html5_mse_smjs.c
 CC scenegraph/webvtt_smjs.c
 CC media_tools/isom_tools.c
media_tools/isom_tools.c: In function ‘gf_media_change_pl’:
media_tools/isom_tools.c:2321:9: warning: variable ‘e’ set but not used [-Wunused-but-set-variable]
 GF_Err e;
        ^
 CC media_tools/dash_segmenter.c
media_tools/dash_segmenter.c: In function ‘gf_media_isom_segment_file’:
media_tools/dash_segmenter.c:1666:21: warning: variable ‘SegmentNum’ set but not used [-Wunused-but-set-variable]
        u32 scaler, SegmentNum;
                    ^
media_tools/dash_segmenter.c: In function ‘dasher_isom_segment_file’:
media_tools/dash_segmenter.c:2969:6: warning: ‘track_duration2’ may be used uninitialized in this function [-Wmaybe-uninitialized]
   e = dasher_isom_adjust_last_sample(in, trackNumber, track_duration2, target_duration_in_timescale, fragment_duration_in_sec);
     ^
media_tools/dash_segmenter.c:2952:14: note: ‘track_duration2’ was declared here
   u32 i, j, track_duration2, sample_count = gf_isom_get_sample_count(in, trackNumber);
             ^
 CC media_tools/av_parsers.c
media_tools/av_parsers.c: In function ‘gf_ac3_parser_bs’:
media_tools/av_parsers.c:4694:64: warning: variable ‘syncword’ set but not used [-Wunused-but-set-variable]
 u32 fscod, frmsizecod, bsid, ac3_mod, freq, framesize, bsmod, syncword;
                                                               ^
media_tools/av_parsers.c: In function ‘gf_eac3_parser_bs’:
media_tools/av_parsers.c:4759:45: warning: variable ‘syncword’ set but not used [-Wunused-but-set-variable]
 u32 fscod, bsid, ac3_mod, freq, framesize, syncword, substreamid, lfon, channels, numblkscod;
                                            ^
 CC media_tools/img.c
 CC media_tools/media_import.c
media_tools/media_import.c: In function ‘gf_import_amr_evrc_smv’:
media_tools/media_import.c:3803:54: warning: variable ‘readen’ set but not used [-Wunused-but-set-variable]
 u32 track, trackID, di, sample_rate, block_size, i, readen;
                                                     ^
media_tools/media_import.c: In function ‘gf_import_raw_unit’:
media_tools/media_import.c:6971:35: warning: variable ‘readen’ set but not used [-Wunused-but-set-variable]
 u32 mtype, track, di, timescale, readen;
                                  ^
 CC media_tools/mpegts.c
media_tools/mpegts.c: In function ‘gf_m2ts_process_tdt_tot’:
media_tools/mpegts.c:1952:6: warning: variable ‘data_size’ set but not used [-Wunused-but-set-variable]
 u32 data_size, nb_sections;
     ^
 CC media_tools/m3u8.c
 CC media_tools/mpd.c
media_tools/mpd.c: In function ‘gf_m3u8_fill_mpd_struct.isra.15’:
media_tools/mpd.c:1267:45: warning: ‘pe’ may be used uninitialized in this function [-Wmaybe-uninitialized]
   set->segment_template->duration = (u32)pe->duration_info;
                                            ^
 CC media_tools/dash_client.c
media_tools/dash_client.c: In function ‘gf_dash_update_manifest’:
media_tools/dash_client.c:2083:6: warning: ‘force_timeline_setup’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  if (force_timeline_setup) {
     ^
media_tools/dash_client.c: In function ‘gf_dash_get_segment_availability_start_time’:
media_tools/dash_client.c:1329:21: warning: ‘scale’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  *segment_duration /= scale;
                    ^
media_tools/dash_client.c:1324:6: note: ‘scale’ was declared here
 u32 scale;
     ^
media_tools/dash_client.c:1328:23: warning: ‘dur’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  *segment_duration = (Double) dur;
                      ^
media_tools/dash_client.c:1323:13: note: ‘dur’ was declared here
 u64 start, dur;
            ^
media_tools/dash_client.c: In function ‘gf_dash_group_current_segment_start_time’:
media_tools/dash_client.c:1331:24: warning: ‘scale’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 return ((Double)start)/scale;
                       ^
media_tools/dash_client.c:1324:6: note: ‘scale’ was declared here
 u32 scale;
     ^
 CC media_tools/media_export.c
 CC media_tools/m2ts_mux.c
media_tools/m2ts_mux.c: In function ‘gf_m2ts_mux_table_get_next_packet’:
media_tools/m2ts_mux.c:486:21: warning: variable ‘table’ set but not used [-Wunused-but-set-variable]
 GF_M2TS_Mux_Table *table;
                    ^
 CC media_tools/filestreamer.c
 CC media_tools/avilib.c
 CC media_tools/mpeg2_ps.c
 CC media_tools/gpac_ogg.c
 CC media_tools/ismacryp.c
 CC media_tools/isom_hinter.c
 CC media_tools/saf.c
 CC media_tools/vobsub.c
 CC media_tools/text_import.c
 CC media_tools/html5_media.c
 CC media_tools/html5_mse.c
media_tools/html5_mse.c: In function ‘gf_mse_parse_segment’:
media_tools/html5_mse.c:783:12: warning: variable ‘e’ set but not used [-Wunused-but-set-variable]
    GF_Err e;
           ^
 CC media_tools/webvtt.c
 CC mcrypt/cbc.c
 CC mcrypt/cfb.c
 CC mcrypt/ctr.c
 CC mcrypt/des.c
 CC mcrypt/ecb.c
 CC mcrypt/g_crypt.c
 CC mcrypt/ncfb.c
 CC mcrypt/nofb.c
 CC mcrypt/ofb.c
 CC mcrypt/rijndael-128.c
 CC mcrypt/rijndael-192.c
 CC mcrypt/rijndael-256.c
 CC mcrypt/stream.c
 CC mcrypt/tripledes.c
OBJS utils/os_divers.o utils/os_file.o utils/list.o utils/bitstream.o utils/error.o utils/alloc.o utils/url.o utils/configfile.o  utils/sha1.o  utils/base_encoding.o utils/os_net.o utils/os_thread.o utils/os_config_init.o utils/cache.o utils/downloader.o utils/xml_parser.o utils/utf.o utils/token.o utils/color.o  utils/os_module.o utils/math.o utils/path2d.o utils/path2d_stroker.o utils/module.o utils/uni_bidi.o utils/ringbuffer.o utils/unicode.o utils/map.o   mcrypt/cbc.o mcrypt/cfb.o mcrypt/ctr.o mcrypt/des.o mcrypt/ecb.o mcrypt/g_crypt.o mcrypt/ncfb.o mcrypt/nofb.o mcrypt/ofb.o mcrypt/rijndael-128.o mcrypt/rijndael-192.o mcrypt/rijndael-256.o mcrypt/stream.o mcrypt/tripledes.o  scenegraph/base_scenegraph.o scenegraph/mpeg4_animators.o scenegraph/commands.o scenegraph/mpeg4_nodes.o scenegraph/mpeg4_valuator.o scenegraph/vrml_interpolators.o scenegraph/vrml_proto.o scenegraph/vrml_route.o scenegraph/vrml_script.o scenegraph/vrml_smjs.o scenegraph/vrml_tools.o scenegraph/x3d_nodes.o scenegraph/svg_attributes.o scenegraph/svg_types.o scenegraph/svg_smjs.o scenegraph/smil_anim.o scenegraph/smil_timing.o scenegraph/svg_properties.o scenegraph/dom_events.o  scenegraph/dom_smjs.o scenegraph/xbl_process.o scenegraph/xml_ns.o scenegraph/html5_media_smjs.o scenegraph/html5_mse_smjs.o scenegraph/webvtt_smjs.o ietf/rtcp.o ietf/rtp.o ietf/rtp_packetizer.o ietf/rtp_pck_3gpp.o ietf/rtp_pck_mpeg12.o ietf/rtp_pck_mpeg4.o ietf/rtsp_command.o ietf/rtsp_common.o ietf/rtsp_response.o ietf/rtsp_session.o ietf/sdp.o ietf/rtp_depacketizer.o ietf/rtp_streamer.o bifs/arith_decoder.o bifs/bifs_codec.o bifs/bifs_node_tables.o bifs/com_dec.o bifs/com_enc.o bifs/conditional.o bifs/field_decode.o bifs/field_encode.o bifs/memory_decoder.o bifs/predictive_mffield.o bifs/quantize.o bifs/script_dec.o bifs/script_enc.o bifs/unquantize.o isomedia/avc_ext.o isomedia/box_code_3gpp.o isomedia/box_code_apple.o isomedia/box_code_base.o isomedia/box_code_drm.o isomedia/box_code_meta.o isomedia/box_dump.o isomedia/box_funcs.o isomedia/data_map.o isomedia/drm_sample.o isomedia/isom_intern.o isomedia/isom_read.o isomedia/isom_store.o isomedia/isom_write.o isomedia/media.o isomedia/media_odf.o isomedia/meta.o isomedia/movie_fragments.o isomedia/sample_descs.o isomedia/stbl_read.o isomedia/stbl_write.o isomedia/track.o isomedia/tx3g.o isomedia/iff.o    isomedia/hint_track.o isomedia/hinting.o isomedia/box_code_adobe.o isomedia/ttml.o odf/desc_private.o odf/descriptors.o odf/odf_code.o odf/odf_codec.o odf/odf_command.o odf/qos.o odf/slc.o  odf/ipmpx_code.o odf/oci_codec.o  odf/ipmpx_dump.o odf/ipmpx_parse.o odf/odf_dump.o odf/odf_parse.o media_tools/isom_tools.o media_tools/dash_segmenter.o media_tools/av_parsers.o media_tools/img.o media_tools/media_import.o media_tools/mpegts.o media_tools/m3u8.o media_tools/mpd.o media_tools/dash_client.o  media_tools/media_export.o media_tools/m2ts_mux.o media_tools/filestreamer.o media_tools/avilib.o media_tools/mpeg2_ps.o media_tools/gpac_ogg.o media_tools/ismacryp.o media_tools/isom_hinter.o media_tools/saf.o media_tools/vobsub.o media_tools/text_import.o media_tools/html5_media.o media_tools/html5_mse.o media_tools/webvtt.o  scene_manager/scene_manager.o scene_manager/text_to_bifs.o scene_manager/loader_bt.o scene_manager/loader_xmt.o scene_manager/loader_isom.o scene_manager/loader_qt.o scene_manager/loader_svg.o  scene_manager/swf_parse.o scene_manager/swf_bifs.o scene_manager/swf_svg.o  scene_manager/scene_dump.o scene_manager/scene_stats.o scene_manager/scene_engine.o  scene_manager/encode_isom.o terminal/channel.o terminal/clock.o terminal/decoder.o terminal/term_node_init.o terminal/input_sensor.o terminal/media_control.o terminal/media_manager.o terminal/media_memory.o terminal/media_object.o terminal/media_sensor.o terminal/mpeg4_inline.o terminal/network_service.o terminal/object_browser.o terminal/object_manager.o terminal/scene.o terminal/terminal.o terminal/svg_external.o compositor/audio_input.o compositor/audio_mixer.o compositor/audio_render.o compositor/bindable.o compositor/camera.o compositor/compositor.o compositor/compositor_2d.o compositor/compositor_3d.o compositor/compositor_node_init.o compositor/drawable.o compositor/events.o compositor/font_engine.o compositor/hc_flash_shape.o compositor/hardcoded_protos.o compositor/mesh.o compositor/mesh_collide.o compositor/mesh_tesselate.o compositor/mpeg4_animstream.o compositor/mpeg4_audio.o compositor/mpeg4_background.o compositor/mpeg4_background2d.o compositor/mpeg4_bitmap.o compositor/mpeg4_composite.o compositor/mpeg4_form.o compositor/mpeg4_geometry_2d.o compositor/mpeg4_geometry_3d.o compositor/mpeg4_geometry_ifs2d.o compositor/mpeg4_geometry_ils2d.o compositor/mpeg4_gradients.o compositor/mpeg4_grouping.o compositor/mpeg4_grouping_2d.o compositor/mpeg4_grouping_3d.o compositor/mpeg4_layer_2d.o compositor/mpeg4_layer_3d.o compositor/mpeg4_layout.o compositor/mpeg4_lighting.o compositor/mpeg4_path_layout.o compositor/mpeg4_sensors.o compositor/mpeg4_sound.o compositor/mpeg4_text.o compositor/mpeg4_textures.o compositor/mpeg4_timesensor.o compositor/mpeg4_viewport.o compositor/navigate.o compositor/offscreen_cache.o compositor/svg_base.o compositor/svg_filters.o compositor/svg_font.o compositor/svg_geometry.o compositor/svg_grouping.o compositor/svg_media.o compositor/svg_paint_servers.o compositor/svg_text.o compositor/texturing.o compositor/texturing_gl.o compositor/visual_manager.o compositor/visual_manager_2d.o compositor/visual_manager_2d_draw.o compositor/visual_manager_3d.o compositor/visual_manager_3d_gl.o compositor/x3d_geometry.o laser/lsr_enc.o laser/lsr_dec.o laser/lsr_tables.o
LIBS -lm -L/usr/local/lib -lGL -lGLU -lX11  -lz -lssl -lcrypto -lmozjs185 -lplds4 -lplc4 -lnspr4   -ljpeg -lpng -lpthread -ldl
mv ../bin/gcc/libgpac.so ../bin/gcc/libgpac.so.6.0.0
ln -sf libgpac.so.6.0.0 ../bin/gcc/libgpac.so.6
ln -sf libgpac.so.6.0.0 ../bin/gcc/libgpac.so
make[1]: Leaving directory

     /home/vmg/gpac/src’
     make -C applications all
     make[1] : Entering directory

     /home/vmg/gpac/applications'
set -e; for i in  mp4client  mp4box  mp42ts  dashcast ; do make -C $i all; done
make[2]: Entering directory

     /home/vmg/gpac/applications/mp4client’
     make[2] : Leaving directory

     /home/vmg/gpac/applications/mp4client'
make[2]: Entering directory

     /home/vmg/gpac/applications/mp4box’
     make[2] : Leaving directory

     /home/vmg/gpac/applications/mp4box'
make[2]: Entering directory

     /home/vmg/gpac/applications/mp42ts’
     make[2] : Leaving directory

     /home/vmg/gpac/applications/mp42ts'
make[2]: Entering directory

     /home/vmg/gpac/applications/dashcast’
     CC audio_decoder.c
     audio_decoder.c : In function ‘dc_audio_decoder_read’ :
     audio_decoder.c:276:48 : error : ‘AVFrame’ has no member named ‘channels’
     int num_channels = audio_input_data->aframe->channels ;
     ^
     make[2] : * [audio_decoder.o] Error 1
     make[2] : Leaving directory

     /home/vmg/gpac/applications/dashcast'
make[1]: *** [apps] Error 2
make[1]: Leaving directory

     /home/vmg/gpac/applications’
     make : * [all] Error 2

  Regarding to ffmpeg-libraries :

  ffmpeg version N-74748-gbaeb8f5 Copyright (c) 2000-2015 the FFmpeg developers
  
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
  
  configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libdcadec --enable-libfreetype --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvo-aacenc --enable-libvidstab
  
  libavutil      54. 31.100 / 54. 31.100
  
  libavcodec     56. 59.100 / 56. 59.100
  
  libavformat    56. 40.101 / 56. 40.101
  
  libavdevice    56.  4.100 / 56.  4.100
  
  libavfilter     5. 40.100 /  5. 40.100
  
  libavresample   2.  1.  0 /  2.  1.  0
  
  libswscale      3.  1.101 /  3.  1.101
  
  libswresample   1.  2.101 /  1.  2.101
  
  libpostproc    53.  3.100 / 53.  3.100

  I don’t know if the error is due to some incompatibility with the libraries or if I must uninstall the previous GPAC (I don’t know how to make it because there is no uninstall script).

  I will appreciate any help.
  Thank you !