Recherche avancée

Médias (0)

Mot : - Tags -/masques

Aucun média correspondant à vos critères n’est disponible sur le site.

Autres articles (24)

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 is the first MediaSPIP stable release.
    Its official release date is June 21, 2013 and is announced here.
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

Sur d’autres sites (7245)

  • FFMPEG to create an MPEG-DASH stream with VP8

    16 septembre 2019, par Kenny Worden

    I’m trying to use FFMPEG to stream a live video feed from my webcam /dev/video0. Following scattered tutorials and scarce documentation (is this a known problem for the encoding community ?) I arrived at the following bash script :

    #!/bin/bash
    

    
ffmpeg \
    
    -y \
    
    -f v4l2 \
    
        -i /dev/video0 \
    
        -s 640x480 \
    
        -input_format mjpeg \
    
        -r 24 \
    
    -map 0:0 \
    
    -pix_fmt yuv420p \
    
    -codec:v libvpx \
    
        -s 640x480 \
    
        -threads 4 \
    
        -b:v 50k \
    
        -tile-columns 4 \
    
        -frame-parallel 1 \
    
        -keyint_min 24 -g 24 \
    
    -f webm_chunk \
    
        -header "stream.hdr" \
    
        -chunk_start_index 1 \
    
    stream_%d.chk &
    

    
sleep 2
    

    
ffmpeg \
    
    -f webm_dash_manifest -live 1 \
    
    -i stream.hdr \
    
    -c copy \
    
    -map 0 \
    
    -f webm_dash_manifest -live 1 \
    
        -adaptation_sets "id=0,streams=0" \
    
        -chunk_start_index 1 \
    
        -chunk_duration_ms 1000 \
    
        -time_shift_buffer_depth 30000 \
    
        -minimum_update_period 60000 \
    
    stream_manifest.mpd

    When I run this script, my webcam light turns on, the stream.hdr and stream_manifest.mpd files are written, and chunks start to be created (i.e. stream_1.chk, stream_2.chk, etc...). However, FFMPEG throws the following error :

    Could not write header for output file #0 (incorrect codec parameters
     ?) : Invalid data found when processing input

    I will explain what I think I am doing with this script, and hopefully this will expose any errors in my thinking.

    First, we invoke FFMPEG to use Video for Linux 2 (v4l2) to read from my webcam (/dev/video0) of a resolution 640x480. The input format is mjpeg with a framerate of 24fps.

    I then declare that FFMPEG should "map" (copy) the video stream output by v4l2 to a file. I specify the pixel format (YUV420P) and use libvpx (VP8 encoding) to encode the video stream. I set the size to be 640x480, use 4 threads, set the bitrate to be 50kbps, do some magic with tile-columns and frame-parallel options, and set the I-frames to be 24 frames apart.

    I then create a stream.hdr file. The starting index is 1. This command continues to run infinitely until I kill it, grabbing new video from my webcam and outputting it into chunks.

    I then sleep for 2 seconds to give the previous command time to generate a header file.

    And that’s really it. The next invocation of FFMPEG simply creates the MPEG-DASH manifest file given the header generated in the previous step.

    So what’s going on ? Why can I not view the video in a web browser (I’m using Dash.js) ? I serve the manifest, header, and chunks on a Node.js server so that trivial issue is not the problem.

    Edit : Here is my full console output.

    ffmpeg version 3.0.7-0ubuntu0.16.10.1 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 6.2.0 (Ubuntu 6.2.0-5ubuntu12) 20161005
    
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.10.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-chromaprint --enable-libx264
    
  libavutil      55. 17.103 / 55. 17.103
    
  libavcodec     57. 24.102 / 57. 24.102
    
  libavformat    57. 25.100 / 57. 25.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 31.100 /  6. 31.100
    
  libavresample   3.  0.  0 /  3.  0.  0
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
[video4linux2,v4l2 @ 0x55847e244ea0] The driver changed the time per frame from 1/24 to 1/30
    
[mjpeg @ 0x55847e245c00] Changing bps to 8
    
Input #0, video4linux2,v4l2, from '/dev/video0':
    
  Duration: N/A, start: 64305.102081, bitrate: N/A
    
    Stream #0:0: Video: mjpeg, yuvj422p(pc, bt470bg/unknown/unknown), 640x480, -5 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
    
Codec AVOption frame-parallel (Enable frame parallel decodability features) specified for output file #0 (stream_%d.chk) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
    
Codec AVOption tile-columns (Number of tile columns to use, log2) specified for output file #0 (stream_%d.chk) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
    
[swscaler @ 0x55847e24b720] deprecated pixel format used, make sure you did set range correctly
    
[libvpx @ 0x55847e248a20] v1.5.0
    
Output #0, webm_chunk, to 'stream_%d.chk':
    
  Metadata:
    
    encoder         : Lavf57.25.100
    
    Stream #0:0: Video: vp8 (libvpx), yuv420p, 640x480, q=-1--1, 50 kb/s, 30 fps, 30 tbn, 30 tbc
    
    Metadata:
    
      encoder         : Lavc57.24.102 libvpx
    
    Side data:
    
      unknown side data type 10 (24 bytes)
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mjpeg (native) -> vp8 (libvpx))
    
Press [q] to stop, [?] for help
    
frame=   21 fps=0.0 q=0.0 size=N/A time=00:00:00.70 bitrate=N/A dup=5 drop=frame=   36 fps= 35 q=0.0 size=N/A time=00:00:01.20 bitrate=N/A dup=5 drop=frame=   51 fps= 33 q=0.0 size=N/A time=00:00:01.70 bitrate=N/A dup=5 drop=ffmpeg version 3.0.7-0ubuntu0.16.10.1 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 6.2.0 (Ubuntu 6.2.0-5ubuntu12) 20161005
    
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.10.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-chromaprint --enable-libx264
    
  libavutil      55. 17.103 / 55. 17.103
    
  libavcodec     57. 24.102 / 57. 24.102
    
  libavformat    57. 25.100 / 57. 25.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 31.100 /  6. 31.100
    
  libavresample   3.  0.  0 /  3.  0.  0
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, webm_dash_manifest, from 'stream.hdr':
    
  Metadata:
    
    encoder         : Lavf57.25.100
    
  Duration: N/A, bitrate: N/A
    
    Stream #0:0: Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
    
    Metadata:
    
      webm_dash_manifest_file_name: stream.hdr
    
      webm_dash_manifest_track_number: 1
    
Output #0, webm_dash_manifest, to 'stream_manifest.mpd':
    
  Metadata:
    
    encoder         : Lavf57.25.100
    
    Stream #0:0: Video: vp8, yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
    
    Metadata:
    
      webm_dash_manifest_file_name: stream.hdr
    
      webm_dash_manifest_track_number: 1
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
Could not write header for output file #0 (incorrect codec parameters ?): Invalid data found when processing input
    
frame=   67 fps= 33 q=0.0 size
    
frame=   82 fps= 32 q=0.0 size=N/A time=00:00:02.73 bitrate=N/A dup=5 drop=
    
frame=   97 fps= 32 q=0.0 size=N/A time=00:00:03.23 bitrate=N/A dup=5 drop=
    
frame=  112 fps= 32 q=0.0 size=N/A time=00:00:03.73 bitrate=N/A dup=5 ...

  • 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 :

    <?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

  • Having trouble compiling ffmpeg code in command terminal

    10 septembre 2019, par m00ncake

    I am having a bit of trouble compiling my c++ code in my terminal. I have ffmpeg installed as shown below.

    ffmpeg version n4.1 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
    
  configuration: --enable-gpl --enable-version3 --disable-static --enable-shared --enable-small --enable-avisynth --enable-chromaprint --enable-frei0r --enable-gmp --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-librtmp --enable-libshine --enable-libsmbclient --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtesseract --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libxml2 --enable-libzmq --enable-libzvbi --enable-lv2 --enable-libmysofa --enable-openal --enable-opencl --enable-opengl --enable-libdrm
    
  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
    
Hyper fast Audio and Video encoder
    
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

    However, when I compile my c++ code, currently trying to get NTP timestamps from private data in ffmpeg but I need to include their headers ? I have looked into ffmpeg’s libavformat folder and it does have rtpdec.h but when I compile it in the command line, i get this error. (trying to include this header for RTSPState and RTSPStream as well as RTPDemuxContext)

    cf.cpp:11:10: fatal error: libavformat/rtsp.h: No such file or directory
    
 #include <libavformat></libavformat>rtpdec.h>
    
          ^~~~~~~~~~~~~~~~~~~~
    
compilation terminated.

    This is my code :

    #include 
    
#include 
    
#include <iostream>
    
#include <fstream>
    
#include <sstream>
    

    
extern "C" {
    
#include <libavcodec></libavcodec>avcodec.h>
    
#include <libavformat></libavformat>avformat.h>
    
#include <libavformat></libavformat>avio.h>
    
#include <libavformat></libavformat>rtpdec.h>
    
#include <libswscale></libswscale>swscale.h>
    
}
    

    
int main(int argc, char** argv) {
    

    
    // Open the initial context variables that are needed
    
    SwsContext *img_convert_ctx;
    
    AVFormatContext* format_ctx = avformat_alloc_context();
    
    AVCodecContext* codec_ctx = NULL;
    
    int video_stream_index;
    
    uint32_t* last_rtcp_ts;
    
    double* base_time;
    
    double* time;
    

    
    // Register everything
    
    av_register_all();
    
    avformat_network_init();
    

    
    //open RTSP
    
    if (avformat_open_input(&amp;format_ctx, "rtsp://admin:password@192.168.1.67:554",
    
            NULL, NULL) != 0) {
    
        return EXIT_FAILURE;
    
    }
    

    
    if (avformat_find_stream_info(format_ctx, NULL) &lt; 0) {
    
        return EXIT_FAILURE;
    
    }
    

    
    //search video stream
    
    for (int i = 0; i &lt; format_ctx->nb_streams; i++) {
    
        if (format_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO)
    
            video_stream_index = i;
    
    }
    

    
    AVPacket packet;
    
    av_init_packet(&amp;packet);
    

    
    //open output file
    
    AVFormatContext* output_ctx = avformat_alloc_context();
    

    
    AVStream* stream = NULL;
    
    int cnt = 0;
    

    
    //start reading packets from stream and write them to file
    
    av_read_play(format_ctx);    //play RTSP
    

    
    // Get the codec
    
    AVCodec *codec = NULL;
    
    codec = avcodec_find_decoder(AV_CODEC_ID_H264);
    
    if (!codec) {
    
        exit(1);
    
    }
    

    
// Add this to allocate the context by codec
    
codec_ctx = avcodec_alloc_context3(codec);
    

    
avcodec_get_context_defaults3(codec_ctx, codec);
    
avcodec_copy_context(codec_ctx, format_ctx->streams[video_stream_index]->codec);
    
std::ofstream output_file;
    

    
if (avcodec_open2(codec_ctx, codec, NULL) &lt; 0)
    
    exit(1);
    

    
    img_convert_ctx = sws_getContext(codec_ctx->width, codec_ctx->height,
    
            codec_ctx->pix_fmt, codec_ctx->width, codec_ctx->height, AV_PIX_FMT_RGB24,
    
            SWS_BICUBIC, NULL, NULL, NULL);
    

    
    int size = avpicture_get_size(AV_PIX_FMT_YUV420P, codec_ctx->width,
    
            codec_ctx->height);
    
    uint8_t* picture_buffer = (uint8_t*) (av_malloc(size));
    
    AVFrame* picture = av_frame_alloc();
    
    AVFrame* picture_rgb = av_frame_alloc();
    
    int size2 = avpicture_get_size(AV_PIX_FMT_RGB24, codec_ctx->width,
    
            codec_ctx->height);
    
    uint8_t* picture_buffer_2 = (uint8_t*) (av_malloc(size2));
    
    avpicture_fill((AVPicture *) picture, picture_buffer, AV_PIX_FMT_YUV420P,
    
            codec_ctx->width, codec_ctx->height);
    
    avpicture_fill((AVPicture *) picture_rgb, picture_buffer_2, AV_PIX_FMT_RGB24,
    
            codec_ctx->width, codec_ctx->height);
    

    
    while (av_read_frame(format_ctx, &amp;packet) >= 0 &amp;&amp; cnt &lt; 1000) { //read ~ 1000 frames
    

    
        RTSPState* rt = format_ctx->priv_data;
    
        RTSPStream *rtsp_stream = rt->rtsp_streams[0];
    
        RTPDemuxContext* rtp_demux_context = rtsp_stream->transport_priv;
    
        uint32_t new_rtcp_ts = rtp_demux_context->last_rtcp_timestamp;
    
        uint64_t last_ntp_time = 0;
    

    
        if (new_rtcp_ts != *last_rtcp_ts) {
    
            *last_rtcp_ts = new_rtcp_ts;
    
            last_ntp_time = rtp_demux_context->last_rtcp_ntp_time;
    
            uint32_t seconds = ((last_ntp_time >> 32) &amp; 0xffffffff) - 2208988800;
    
            uint32_t fraction  = (last_ntp_time &amp; 0xffffffff);
    
            double useconds = ((double) fraction / 0xffffffff);
    
            *base_time = seconds + useconds;
    
            uint32_t d_ts = rtp_demux_context->timestamp - *last_rtcp_ts;
    
            *time = *base_time + d_ts / 90000.0;
    
            std::cout &lt;&lt; "Time is: " &lt;&lt; *time &lt;&lt; std::endl;
    
        }
    

    
        std::cout &lt;&lt; "1 Frame: " &lt;&lt; cnt &lt;&lt; std::endl;
    
        if (packet.stream_index == video_stream_index) {    //packet is video
    
            std::cout &lt;&lt; "2 Is Video" &lt;&lt; std::endl;
    
            if (stream == NULL) {    //create stream in file
    
                std::cout &lt;&lt; "3 create stream" &lt;&lt; std::endl;
    
                stream = avformat_new_stream(output_ctx,
    
                        format_ctx->streams[video_stream_index]->codec->codec);
    
                avcodec_copy_context(stream->codec,
    
                        format_ctx->streams[video_stream_index]->codec);
    
                stream->sample_aspect_ratio =
    
                        format_ctx->streams[video_stream_index]->codec->sample_aspect_ratio;
    
            }
    
            int check = 0;
    
            packet.stream_index = stream->id;
    
            std::cout &lt;&lt; "4 decoding" &lt;&lt; std::endl;
    
            int result = avcodec_decode_video2(codec_ctx, picture, &amp;check, &amp;packet);
    
            std::cout &lt;&lt; "Bytes decoded " &lt;&lt; result &lt;&lt; " check " &lt;&lt; check
    
                    &lt;&lt; std::endl;
    
            if (cnt > 100)    //cnt &lt; 0)
    
                    {
    
                sws_scale(img_convert_ctx, picture->data, picture->linesize, 0,
    
                        codec_ctx->height, picture_rgb->data, picture_rgb->linesize);
    
                std::stringstream file_name;
    
                file_name &lt;&lt; "test" &lt;&lt; cnt &lt;&lt; ".ppm";
    
                output_file.open(file_name.str().c_str());
    
                output_file &lt;&lt; "P3 " &lt;&lt; codec_ctx->width &lt;&lt; " " &lt;&lt; codec_ctx->height
    
                        &lt;&lt; " 255\n";
    
                for (int y = 0; y &lt; codec_ctx->height; y++) {
    
                    for (int x = 0; x &lt; codec_ctx->width * 3; x++)
    
                        output_file
    
                                &lt;&lt; (int) (picture_rgb->data[0]
    
                                        + y * picture_rgb->linesize[0])[x] &lt;&lt; " ";
    
                }
    
                output_file.close();
    
            }
    
            cnt++;
    
        }
    
        av_free_packet(&amp;packet);
    
        av_init_packet(&amp;packet);
    
    }
    
    av_free(picture);
    
    av_free(picture_rgb);
    
    av_free(picture_buffer);
    
    av_free(picture_buffer_2);
    

    
    av_read_pause(format_ctx);
    
    avio_close(output_ctx->pb);
    
    avformat_free_context(output_ctx);
    

    
    return (EXIT_SUCCESS);
    
}
    
</sstream></fstream></iostream>

    The command i use to compile my code : g++ -w cf.cpp -o cf $(pkg-config --cflags --libs libavformat libswscale libavcodec)

    I am a bit new to coding in FFmpeg.

Navigation