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  • Debugging the canvas texture code in A-Frame (FFmpeg stream as canvas source)

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    I am attempting to display a canvas as a texture in A-Frame. The canvas image is a video stream fed in from FFmpeg. This feed displays fine on the regular 2d canvas example from https://github.com/sbidolach/video-live-streaming , but I’m just getting a blank browser window when attempting to bring the code for reading FFmpeg to Canvas into the A-frame page structure.

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  • FFMPEG, Creating an MPEG-DASH stream with existing inputs

    10 septembre 2019, par kitensei

    I am trying to generating a DASH .mpd file from multiple inputs (2 videos, 1 audio) without any success..

    What I’d like to do it’s simple getting the streams and create an mpd file without any re encoding since I’ve already my sources ready.

    The output seems to work in rxplayer, but I do get a lot of errors (see log below).

    Here are my 3 sources (taken from http://dash-mse-test.appspot.com/media.html) :

    ➜  test-dash $ ffprobe -hide_banner ../test-sources/car/car-20120827-89.mp4
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '../test-sources/car/car-20120827-89.mp4':
     Metadata:
       major_brand     : dash
       minor_version   : 0
       compatible_brands: iso6avc1mp41
       creation_time   : 2012-08-24T03:04:15.000000Z
     Duration: 00:03:01.39, start: 0.000000, bitrate: 4202 kb/s
       Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080, 171 kb/s, 23.97 fps, 23.97 tbr, 90k tbn, 47.95 tbc (default)
       Metadata:
         creation_time   : 2012-08-24T03:04:15.000000Z
         handler_name    : VideoHandler

    ➜  test-dash $ ffprobe -hide_banner ../test-sources/car/car-20120827-88.mp4
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '../test-sources/car/car-20120827-88.mp4':
     Metadata:
       major_brand     : dash
       minor_version   : 0
       compatible_brands: iso6avc1mp41
       creation_time   : 2012-08-27T01:01:28.000000Z
     Duration: 00:03:01.43, start: 0.000000, bitrate: 2076 kb/s
       Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 1280x720, 81 kb/s, 23.97 fps, 23.97 tbr, 90k tbn, 47.95 tbc (default)
       Metadata:
         creation_time   : 2012-08-27T01:01:28.000000Z
         handler_name    : VideoHandler

    ➜  test-dash $ ffprobe -hide_banner ../test-sources/car/car-20120827-8b.mp4
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '../test-sources/car/car-20120827-8b.mp4':
     Metadata:
       major_brand     : dash
       minor_version   : 0
       compatible_brands: iso6mp41
       creation_time   : 2012-08-27T01:19:23.000000Z
     Duration: 00:03:01.63, start: 0.000000, bitrate: 31 kb/s
       Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 1 kb/s (default)
       Metadata:
         creation_time   : 2012-08-27T01:19:23.000000Z
         handler_name    : SoundHandler

    And here how I am "muxing" them together with an .mpd manifest :

    ffmpeg  \
    -re \
    -i ../test-sources/car/car-20120827-88.mp4 \
    -i ../test-sources/car/car-20120827-89.mp4 \
    -i ../test-sources/car/car-20120827-8d.mp4 \
    -map 0:0  \
    -map 1:0 \
    -map 2:0 \
    -c copy \
    -bf 1 -keyint_min 120 -g 120 -sc_threshold 0 \
    -b_strategy 0 -use_timeline 1 -use_template 1 \
    -adaptation_sets "id=0,streams=v id=1,streams=a" \
    -f dash out.mpd

    The generated mpd file :

    &lt;?xml version="1.0" encoding="utf-8"?>
    <mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediapresentationduration="PT3M1.3S" minbuffertime="PT10.0S">
       <programinformation>
       </programinformation>
       <period start="PT0.0S">
           <adaptationset contenttype="video" segmentalignment="true" bitstreamswitching="true" lang="und">
               <representation mimetype="video/mp4" codecs="avc1.4d401f" bandwidth="81397" width="1280" height="720" framerate="45000/1877">
                   <segmenttemplate timescale="24000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
                       <segmenttimeline>
                           <s t="0" d="120128"></s>
                           <s d="120120" r="34"></s>
                           <s d="29023"></s>
                       </segmenttimeline>
                   </segmenttemplate>
               </representation>
               <representation mimetype="video/mp4" codecs="avc1.640028" bandwidth="171953" width="1920" height="1080" framerate="45000/1877">
                   <segmenttemplate timescale="24000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
                       <segmenttimeline>
                           <s t="0" d="121129"></s>
                           <s d="239239"></s>
                           <s d="120120" r="32"></s>
                           <s d="29023"></s>
                       </segmenttimeline>
                   </segmenttemplate>
               </representation>
           </adaptationset>
           <adaptationset contenttype="audio" segmentalignment="true" bitstreamswitching="true" lang="und">
               <representation mimetype="audio/mp4" codecs="mp4a.40.2" bandwidth="13976" audiosamplingrate="44100">
                   <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
                   <segmenttemplate timescale="44100" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
                       <segmenttimeline>
                           <s t="0" d="219136"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="221184" r="1"></s>
                           <s d="220160"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="221184" r="1"></s>
                           <s d="220160"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="221184" r="1"></s>
                           <s d="220160"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="221184"></s>
                           <s d="220160"></s>
                           <s d="63488"></s>
                       </segmenttimeline>
                   </segmenttemplate>
               </representation>
           </adaptationset>
       </period>
    </mpd>

    But I get a lot of errors :

    ➜  test-dash git:(0.1) ✗ ffmpeg  \
    -re \
    -i ../test-sources/car/car-20120827-88.mp4 \
    -i ../test-sources/car/car-20120827-89.mp4 \
    -i ../test-sources/car/car-20120827-8d.mp4 \
    -map 0:0  \
    -map 1:0 \
    -map 2:0 \
    -c copy \
    -bf 1 -keyint_min 120 -g 120 -sc_threshold 0 \
    -b_strategy 0 -use_timeline 1 -use_template 1 \
    -adaptation_sets "id=0,streams=v id=1,streams=a" \
    -f dash out.mpd
    ffmpeg version n4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
     built with gcc 9.1.0 (GCC)
     configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared --enable-version3
     libavutil      56. 31.100 / 56. 31.100
     libavcodec     58. 54.100 / 58. 54.100
     libavformat    58. 29.100 / 58. 29.100
     libavdevice    58.  8.100 / 58.  8.100
     libavfilter     7. 57.100 /  7. 57.100
     libswscale      5.  5.100 /  5.  5.100
     libswresample   3.  5.100 /  3.  5.100
     libpostproc    55.  5.100 / 55.  5.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '../test-sources/car/car-20120827-88.mp4':
     Metadata:
       major_brand     : dash
       minor_version   : 0
       compatible_brands: iso6avc1mp41
       creation_time   : 2012-08-27T01:01:28.000000Z
     Duration: 00:03:01.43, start: 0.000000, bitrate: 2076 kb/s
       Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 1280x720, 81 kb/s, 23.97 fps, 23.97 tbr, 90k tbn, 47.95 tbc (default)
       Metadata:
         creation_time   : 2012-08-27T01:01:28.000000Z
         handler_name    : VideoHandler
    Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '../test-sources/car/car-20120827-89.mp4':
     Metadata:
       major_brand     : dash
       minor_version   : 0
       compatible_brands: iso6avc1mp41
       creation_time   : 2012-08-24T03:04:15.000000Z
     Duration: 00:03:01.39, start: 0.000000, bitrate: 4202 kb/s
       Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080, 171 kb/s, 23.97 fps, 23.97 tbr, 90k tbn, 47.95 tbc (default)
       Metadata:
         creation_time   : 2012-08-24T03:04:15.000000Z
         handler_name    : VideoHandler
    Input #2, mov,mp4,m4a,3gp,3g2,mj2, from '../test-sources/car/car-20120827-8d.mp4':
     Metadata:
       major_brand     : dash
       minor_version   : 0
       compatible_brands: iso6mp41
       creation_time   : 2012-08-27T00:59:44.000000Z
     Duration: 00:03:01.58, start: 0.000000, bitrate: 255 kb/s
       Stream #2:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 13 kb/s (default)
       Metadata:
         creation_time   : 2012-08-27T00:59:44.000000Z
         handler_name    : SoundHandler
    [dash @ 0x55b464bb1240] Opening 'init-stream0.m4s' for writing
    [dash @ 0x55b464bb1240] Opening 'init-stream1.m4s' for writing
    [dash @ 0x55b464bb1240] Opening 'init-stream2.m4s' for writing
    Output #0, dash, to 'out.mpd':
     Metadata:
       major_brand     : dash
       minor_version   : 0
       compatible_brands: iso6avc1mp41
       encoder         : Lavf58.29.100
       Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 1280x720, q=2-31, 81 kb/s, 23.97 fps, 23.97 tbr, 24k tbn, 23.98 tbc (default)
       Metadata:
         creation_time   : 2012-08-27T01:01:28.000000Z
         handler_name    : VideoHandler
       Stream #0:1(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080, q=2-31, 171 kb/s, 23.97 fps, 23.97 tbr, 24k tbn, 23.98 tbc (default)
       Metadata:
         creation_time   : 2012-08-24T03:04:15.000000Z
         handler_name    : VideoHandler
       Stream #0:2(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 13 kb/s (default)
       Metadata:
         creation_time   : 2012-08-27T00:59:44.000000Z
         handler_name    : SoundHandler
    Stream mapping:
     Stream #0:0 -> #0:0 (copy)
     Stream #1:0 -> #0:1 (copy)
     Stream #2:0 -> #0:2 (copy)
    Press [q] to stop, [?] for help
    [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00001.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00001.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00001.m4s.tmp' for writing
    [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 119119 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00002.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Non-monotonous DTS in output stream 0:1; previous: 119127, current: 119119; changing to 119128. This may result in incorrect timestamps in the output file.
    [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing
    [mp4 @ 0x55b464c425c0] Application provided duration: -1000 / timestamp: 119128 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00002.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00002.m4s.tmp' for writing
    [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 120120 is out of range for mov/mp4 format
    [mp4 @ 0x55b464c425c0] pts has no value
    [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 239239 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00003.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00003.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing74 bitrate=N/A speed=   1x    
    [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 359359 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00004.m4s.tmp' for writing
    [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 359359 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00003.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00004.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing81 bitrate=N/A speed=   1x    
    [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 479479 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00005.m4s.tmp' for writing
    [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 479479 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00004.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00005.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing86 bitrate=N/A speed=   1x    
    [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 599599 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00006.m4s.tmp' for writing
    [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 599599 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00005.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00006.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing95 bitrate=N/A speed=   1x    
    [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 719719 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00007.m4s.tmp' for writing
    [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 719719 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00006.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00007.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing53 bitrate=N/A speed=   1x    
    [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 839839 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00008.m4s.tmp' for writing
    [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 839839 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00007.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00008.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing59 bitrate=N/A speed=   1x    
    [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 959959 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00009.m4s.tmp' for writing
    [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 959959 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00008.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00009.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing66 bitrate=N/A speed=   1x    
    [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 1080079 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00010.m4s.tmp' for writing
    [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 1080079 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00009.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00010.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing73 bitrate=N/A speed=   1x    
    [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 1200199 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00011.m4s.tmp' for writing
    [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 1200199 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00010.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00011.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing82 bitrate=N/A speed=   1x    
    [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 1320319 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00012.m4s.tmp' for writing
    [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 1320319 is out of range for mov/mp4 format
    [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00011.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00012.m4s.tmp' for writing
    [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing90 bitrate=N/A speed=   1x    
    ...
       [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 3962959 is out of range for mov/mp4 format
       [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00033.m4s.tmp' for writing
       [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00034.m4s.tmp' for writing
       [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing06 bitrate=N/A speed=   1x    
       [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 4083079 is out of range for mov/mp4 format
       [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00035.m4s.tmp' for writing
       [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 4083079 is out of range for mov/mp4 format
       [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00034.m4s.tmp' for writing
       [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00035.m4s.tmp' for writing
       [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing10 bitrate=N/A speed=   1x    
       [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 4203199 is out of range for mov/mp4 format
       [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00036.m4s.tmp' for writing
       [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 4203199 is out of range for mov/mp4 format
       [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00035.m4s.tmp' for writing
       [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00036.m4s.tmp' for writing
       [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing67 bitrate=N/A speed=   1x    
       [mp4 @ 0x55b464c3d840] Application provided duration: -8 / timestamp: 4323319 is out of range for mov/mp4 format
       [dash @ 0x55b464bb1240] Opening 'chunk-stream0-00037.m4s.tmp' for writing
       [mp4 @ 0x55b464c425c0] Application provided duration: -8 / timestamp: 4323319 is out of range for mov/mp4 format
       [dash @ 0x55b464bb1240] Opening 'chunk-stream1-00036.m4s.tmp' for writing
       [dash @ 0x55b464bb1240] Opening 'chunk-stream2-00037.m4s.tmp' for writing
       [dash @ 0x55b464bb1240] Opening 'out.mpd.tmp' for writing18 bitrate=N/A speed=   1x    
       frame= 4350 fps= 24 q=-1.0 Lq=-1.0 size=N/A time=00:03:01.55 bitrate=N/A speed=   1x    
       video:138926kB audio:5621kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown