Intenté obtener un comando FFMpeg para generar el siguiente manifiesto. Justo debajo está el comando FFmpeg que he intentado crear, pero no ha creado el mismo archivo de manifiesto que estoy intentando replicar una transmisión desde un sistema de terceros para agregar mi propia transmisión a su sistema para que realmente se reproduzca. .
"$ffmpeg_path" \
-i "$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 \
"$output_file"
El código anterior genera un manifiesto estructurado como se muestra a continuación.
<?xml version="1.0" encoding="utf-8"?>
<MPD xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:mpeg:dash:schema:mpd:2011"
xmlns:xlink="http://www.w3.org/1999/xlink"
xsi:schemaLocation="urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd"
profiles="urn:mpeg:dash:profile:isoff-live:2011"
type="static"
mediaPresentationDuration="PT1M35.1S"
maxSegmentDuration="PT3.0S"
minBufferTime="PT16.8S">
<ProgramInformation>
</ProgramInformation>
<ServiceDescription id="0">
</ServiceDescription>
<Period id="0" start="PT0.0S">
<AdaptationSet id="0" contentType="video" startWithSAP="1" segmentAlignment="true" bitstreamSwitching="true" frameRate="30000/1001" maxWidth="3840" maxHeight="1080" par="32:9">
<Representation id="0" mimeType="video/mp4" codecs="hev1" bandwidth="2227590" width="3840" height="1080" sar="1:1">
<SegmentTemplate timescale="30000" initialization="init-stream$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$.m4s" startNumber="1">
<SegmentTimeline>
<S t="0" d="143360" />
<S d="144384" r="29" />
<S d="93120" />
</SegmentTimeline>
</SegmentTemplate>
</Representation>
</AdaptationSet>
</Period>
</MPD>
El problema es que lo necesito para crear una secuencia donde el manifiesto se parezca al manifiesto siguiente. Si no se ve o no funciona como se muestra a continuación, no se reproducirá correctamente en este sistema de terceros.
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediaPresentationDuration="PT1M35.7S" minBufferTime="PT5.9S" xsi:schemaLocation="urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd">
<ProgramInformation />
<Period id="0" start="PT0.0S">
<AdaptationSet id="0" contentType="video" segmentAlignment="true" bitstreamSwitching="true">
<Representation id="0" bandwidth="12000000" width="3840" height="1080" frameRate="30000/1001" mimeType="video/mp4" codecs="hev1">
<SegmentTemplate media="chunk-stream$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>