Ich habe versucht, einen FFMpeg-Befehl zu erhalten, der das folgende Manifest erzeugt. Direkt darunter befindet sich der FFmpeg-Befehl, den ich zu erstellen versucht habe, aber er hat nicht dieselbe Manifestdatei erstellt wie die, mit der ich versuche, einen Stream von einem Drittanbietersystem zu replizieren, um meinen eigenen Stream zu ihrem System hinzuzufügen, damit er tatsächlich wiedergegeben werden kann.
"$ffmpeg_path" \
-i "$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 \
"$output_file"
Der obige Code erzeugt ein Manifest, das wie unten strukturiert ist.
<?xml version="1.0" encoding="utf-8"?>
<MPD xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:mpeg:dash:schema:mpd:2011"
xmlns:xlink="http://www.w3.org/1999/xlink"
xsi:schemaLocation="urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd"
profiles="urn:mpeg:dash:profile:isoff-live:2011"
type="static"
mediaPresentationDuration="PT1M35.1S"
maxSegmentDuration="PT3.0S"
minBufferTime="PT16.8S">
<ProgramInformation>
</ProgramInformation>
<ServiceDescription id="0">
</ServiceDescription>
<Period id="0" start="PT0.0S">
<AdaptationSet id="0" contentType="video" startWithSAP="1" segmentAlignment="true" bitstreamSwitching="true" frameRate="30000/1001" maxWidth="3840" maxHeight="1080" par="32:9">
<Representation id="0" mimeType="video/mp4" codecs="hev1" bandwidth="2227590" width="3840" height="1080" sar="1:1">
<SegmentTemplate timescale="30000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startNumber="1">
<SegmentTimeline>
<S t="0" d="247247" />
<S d="250250" r="9" />
<S d="104104" />
</SegmentTimeline>
</SegmentTemplate>
</Representation>
</AdaptationSet>
<AdaptationSet id="1" contentType="audio" startWithSAP="1" segmentAlignment="true" bitstreamSwitching="true">
<Representation id="1" mimeType="audio/mp4" codecs="mp4a.40.2" bandwidth="128000" audioSamplingRate="48000">
<AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="1" />
<SegmentTemplate timescale="48000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startNumber="1">
<SegmentTimeline>
<S t="0" d="143360" />
<S d="144384" r="29" />
<S d="93120" />
</SegmentTimeline>
</SegmentTemplate>
</Representation>
</AdaptationSet>
</Period>
</MPD>
Das Problem ist, dass ich es brauche, um einen Stream zu erstellen, dessen Manifest wie das untenstehende aussieht. Wenn es nicht wie unten aussieht oder funktioniert, wird es auf diesem Drittanbietersystem nicht korrekt wiedergegeben.
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediaPresentationDuration="PT1M35.7S" minBufferTime="PT5.9S" xsi:schemaLocation="urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd">
<ProgramInformation />
<Period id="0" start="PT0.0S">
<AdaptationSet id="0" contentType="video" segmentAlignment="true" bitstreamSwitching="true">
<Representation id="0" bandwidth="12000000" width="3840" height="1080" frameRate="30000/1001" mimeType="video/mp4" codecs="hev1">
<SegmentTemplate media="chunk-stream$RepresentationID$-$Number%05d$.m4s" initialization="init-stream$RepresentationID$.m4s" startNumber="1" timescale="30000">
<SegmentTimeline>
<S t="0" d="89089" r="31" />
<S d="21021" />
</SegmentTimeline>
</SegmentTemplate>
</Representation>
</AdaptationSet>
<AdaptationSet id="1" contentType="audio" segmentAlignment="true" bitstreamSwitching="true">
<Representation id="1" bandwidth="1536000" audioSamplingRate="48000" mimeType="audio/mp4" codecs="mp4a.40.2">
<AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="16" />
<SegmentTemplate media="chunk-stream$RepresentationID$-$Number%05d$.m4s" initialization="init-stream$RepresentationID$.m4s" startNumber="1" timescale="48000">
<SegmentTimeline>
<S t="0" d="143360" />
<S d="142336" r="2" />
<S d="143360" />
<S d="142336" r="3" />
<S d="143360" />
<S d="142336" r="3" />
<S d="143360" />
<S d="142336" r="3" />
<S d="143360" />
<S d="142336" r="3" />
<S d="143360" />
<S d="142336" r="3" />
<S d="143360" />
<S d="142336" r="1" />
<S d="32768" />
</SegmentTimeline>
</SegmentTemplate>
</Representation>
</AdaptationSet>
</Period>
</MPD>