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• libavformat/dashdec : Support negative value of the @r attrbute of S in SegmentTimelin...

  13 août 2018, par sanil

  libavformat/dashdec : Support negative value of the @r attrbute of S in SegmentTimeline element.
  The following patch supports parsing negative value of the @r attribute of S in SegmentTimeline element.
  Example streams :
  
  1. http://dash.edgesuite.net/dash264/TestCases/1c/qualcomm/1/MultiRate.mpd
  
  2. http://dash.edgesuite.net/dash264/TestCases/1c/qualcomm/2/MultiRate.mpd
  

  • [DH] libavformat/dashdec.c

• FFMpeg command line to create specific MPD Manifest

  22 février 2024, par Seth Haberman

  I have tried to get an FFMpeg command to yield the below manifest. Right below is the FFmpeg command that I have tried to make but it has not created the same manifest file as what I am trying to replicate a stream from a third party system to add my own stream to their system so that it will actually play back.

  


  "$ffmpeg_path" \
    -i "$input_file" \
    -r 30000/1001 \
    -vf "scale=3840:1080" \
    -c:v libx265 \
    -c:a aac -b:a 128k \
    -ar 48000 \
    -f dash \
    -use_timeline 1 \
    -use_template 1 \
    -init_seg_name "init-stream\$RepresentationID\$.m4s" \
    -media_seg_name "chunk-stream\$RepresentationID\$-\$Number%05d\$.m4s" \
    -seg_duration 3 \
    "$output_file"


  


  The code above yields a manifest that is structured like below.

  


  &lt;?xml version="1.0" encoding="utf-8"?>&#xA;<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediapresentationduration="PT1M35.1S" maxsegmentduration="PT3.0S" minbuffertime="PT16.8S">&#xA;    <programinformation>&#xA;    </programinformation>&#xA;    <servicedescription>&#xA;    </servicedescription>&#xA;    <period start="PT0.0S">&#xA;        <adaptationset contenttype="video" startwithsap="1" segmentalignment="true" bitstreamswitching="true" framerate="30000/1001" maxwidth="3840" maxheight="1080" par="32:9">&#xA;            <representation mimetype="video/mp4" codecs="hev1" bandwidth="2227590" width="3840" height="1080" sar="1:1">&#xA;                <segmenttemplate timescale="30000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">&#xA;                    <segmenttimeline>&#xA;                        <s t="0" d="247247"></s>&#xA;                        <s d="250250" r="9"></s>&#xA;                        <s d="104104"></s>&#xA;                    </segmenttimeline>&#xA;                </segmenttemplate>&#xA;            </representation>&#xA;        </adaptationset>&#xA;        <adaptationset contenttype="audio" startwithsap="1" segmentalignment="true" bitstreamswitching="true">&#xA;            <representation mimetype="audio/mp4" codecs="mp4a.40.2" bandwidth="128000" audiosamplingrate="48000">&#xA;                <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="1"></audiochannelconfiguration>&#xA;                <segmenttemplate timescale="48000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">&#xA;                    <segmenttimeline>&#xA;                        <s t="0" d="143360"></s>&#xA;                        <s d="144384" r="29"></s>&#xA;                        <s d="93120"></s>&#xA;                    </segmenttimeline>&#xA;                </segmenttemplate>&#xA;            </representation>&#xA;        </adaptationset>&#xA;    </period>&#xA;</mpd>&#xA;&#xA;

  


  The problem is that I I need it to create a stream where the manifest looks like the manifest below. If it doesn't look or function as below, it will not playback correctly on this third parties system.

  


  &lt;?xml version="1.0" encoding="UTF-8" standalone="yes"?>&#xA;<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediapresentationduration="PT1M35.7S" minbuffertime="PT5.9S">&#xA;    <programinformation></programinformation>&#xA;    <period start="PT0.0S">&#xA;        <adaptationset contenttype="video" segmentalignment="true" bitstreamswitching="true">&#xA;            <representation bandwidth="12000000" width="3840" height="1080" framerate="30000/1001" mimetype="video/mp4" codecs="hev1">&#xA;                <segmenttemplate media="chunk-stream$RepresentationID$-$Number%05d$.m4s" initialization="init-stream$RepresentationID$.m4s" startnumber="1" timescale="30000">&#xA;                    <segmenttimeline>&#xA;                        <s t="0" d="89089" r="31"></s>&#xA;                        <s d="21021"></s>&#xA;                    </segmenttimeline>&#xA;                </segmenttemplate>&#xA;            </representation>&#xA;        </adaptationset>&#xA;        <adaptationset contenttype="audio" segmentalignment="true" bitstreamswitching="true">&#xA;            <representation bandwidth="1536000" audiosamplingrate="48000" mimetype="audio/mp4" codecs="mp4a.40.2">&#xA;                <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="16"></audiochannelconfiguration>&#xA;                <segmenttemplate media="chunk-stream$RepresentationID$-$Number%05d$.m4s" initialization="init-stream$RepresentationID$.m4s" startnumber="1" timescale="48000">&#xA;                    <segmenttimeline>&#xA;                        <s t="0" d="143360"></s>&#xA;                        <s d="142336" r="2"></s>&#xA;                        <s d="143360"></s>&#xA;                        <s d="142336" r="3"></s>&#xA;                        <s d="143360"></s>&#xA;                        <s d="142336" r="3"></s>&#xA;                        <s d="143360"></s>&#xA;                        <s d="142336" r="3"></s>&#xA;                        <s d="143360"></s>&#xA;                        <s d="142336" r="3"></s>&#xA;                        <s d="143360"></s>&#xA;                        <s d="142336" r="3"></s>&#xA;                        <s d="143360"></s>&#xA;                        <s d="142336" r="1"></s>&#xA;                        <s d="32768"></s>&#xA;                    </segmenttimeline>&#xA;                </segmenttemplate>&#xA;            </representation>&#xA;        </adaptationset>&#xA;    </period>&#xA;</mpd>&#xA;

  


• ffprobe or avprobe not found. Please install one

  13 février 2024, par Anass

  I want to add tags to mp3 converted by youtube-dl & ffmpeg :

  


  


  youtube-dl -o
'/Output/qpgTC9MDx1o.mp3' qpgTC9MDx1o -f bestaudio —extract-audio —metadata-from-title "%(artist)s -
%(title)s" 2>&1

  


  


  I have this error in the output result :

  


  


  [youtube] qpgTC9MDx1o : Downloading webpage [youtube] qpgTC9MDx1o :
Extracting video information [youtube] qpgTC9MDx1o : Downloading js
player en_US-vfluGO3jj [youtube] qpgTC9MDx1o : Downloading DASH
manifest [download]
/var/www/vhosts/mp3-y.com/httpdocs/Mp3_Output/quick-mp3.com-JALAL-EL-HAMDAOUI-2007-ARRASSIATES-VOL2-F1P-9CDoxlQ.mp3
has already been downloaded [download] 100% of 13.43MiB WARNING :
qpgTC9MDx1o : writing DASH m4a. Only some players support this
container. Install ffmpeg or avconv to fix this automatically.
[fromtitle] parsed artist : Maroon 5 [fromtitle] parsed title : Animals
ERROR : ffprobe or avprobe not found. Please install one.