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• ffmpeg concat creates video with frame timings off by 0.1-0.2 seconds [closed]

  17 octobre 2023, par brain-geek

  I am trying to create some variable frame rate video for test data, however frame timings of the result are consistently off. I tried both ffmpeg 4 and ffmpeg 6, but having same results. I am using example from the website as a reference.

  


  Here is the script to generate video :

  


  rm -f framelist.txt output.mp4

convert -size 640x480 -gravity center -background black -fill purple label:0-2 -units PixelsPerInch -density 254 0-2.png
echo "file '0-2.png'" >> framelist.txt
echo "duration 2" >> framelist.txt
convert -size 640x480 -gravity center -background black -fill purple label:2-2.5 -units PixelsPerInch -density 254 2-2.5.png
echo "file '2-2.5.png'" >> framelist.txt
echo "duration 0.5" >> framelist.txt
convert -size 640x480 -gravity center -background black -fill purple label:2.5-3 -units PixelsPerInch -density 254 2.5-3.png
echo "file '2.5-3.png'" >> framelist.txt
echo "duration 0.5" >> framelist.txt
convert -size 640x480 -gravity center -background black -fill purple label:3-3.25 -units PixelsPerInch -density 254 3-3.25.png
echo "file '3-3.25.png'" >> framelist.txt
echo "duration 0.25" >> framelist.txt
convert -size 640x480 -gravity center -background black -fill purple label:3.25-3.5 -units PixelsPerInch -density 254 3.25-3.5.png
echo "file '3.25-3.5.png'" >> framelist.txt
echo "duration 0.25" >> framelist.txt
convert -size 640x480 -gravity center -background black -fill purple label:3.5-3.75 -units PixelsPerInch -density 254 3.5-3.75.png
echo "file '3.5-3.75.png'" >> framelist.txt
echo "duration 0.25" >> framelist.txt
convert -size 640x480 -gravity center -background black -fill purple label:3.75-4 -units PixelsPerInch -density 254 3.75-4.png
echo "file '3.75-4.png'" >> framelist.txt
echo "duration 0.25" >> framelist.txt
convert -size 640x480 -gravity center -background black -fill purple label:4-10 -units PixelsPerInch -density 254 4-10.png
echo "file '4-10.png'" >> framelist.txt
echo "duration 6" >> framelist.txt
convert -size 640x480 -gravity center -background black -fill purple label:10-20 -units PixelsPerInch -density 254 10-20.png
echo "file '10-20.png'" >> framelist.txt
echo "duration 10" >> framelist.txt
echo "file '10-20.png'" >> framelist.txt

ffmpeg -f concat -i framelist.txt -vsync vfr -pix_fmt yuv420p output.mp4


  


  When after that I do ffprobe, I get not expected frame timings :

  


  $ ffprobe -v error -select_streams v:0 -show_frames output.mp4|grep pts_time
pts_time=0.000000
pts_time=2.000000
pts_time=2.520000
pts_time=3.000000
pts_time=3.240000
pts_time=3.520000
pts_time=3.760000
pts_time=4.000000
pts_time=10.000000
pts_time=20.000000


  


  First and second are correct - 0 and 2, however third should be 2.5 instead of 2.52 . Third is once more correct as 3.0, but fourth should be 3.25, not 3.24 . Last 3 are correct as well (4, 10, 20).

  


  What could be the problem, and how do I get the correct frame timings here ?

  


• Glitchy mp4 File saved with Matplotlib Animation via ffmpeg

  9 janvier 2024, par Jacob Ivanov

  I am attempting to save an .mp4 file using matplotlib.animation to output some simulation results. The relevent section is as follows :

  


  ANI = FuncAnimation(fig, update, init_func = lambda : None, frames = range(0, 21300, 50))
ANI.save("[removed]/anim/v6 256 unforced 0.02.mp4", dpi = 600, fps = 30, writer = 'ffmpeg')


  


  However, it appears that there is some issue in the produced .mp4 file, as when I use macOS Quicktime to view the file, it pauses on certain frames, and restarts later on. It appears to consistently pause on the same frame a few seconds in. In order to check if Quicktime was the problem, I opened some random .mp4 files I found in a family group chat, and did not have this issue.

  


  I also tried viewing this .mp4 file with VLC, which had no issue, and played without any glitches. The Slack media viewer built into the app pauses similar to Quicktime.

  


  The following are all relevant versions :

  


  

  • macOS : 14.2.1 (23C71)

  


  • Python : 3.10.9 via Homebrew

  


  • Matplotlib : 3.6.2

  


  • ffmpeg : 6.1.1

  


  


  If it would help, I can also provide the .mp4 file itself, but I'm not quite sure how to upload it. I will be happy to provide any additional information as well.

  


  Unfortunately, I'm not very familiar with video rendering, but I would appreciate any help anyone could provide. Thank you in advance !

  


• 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 !