我在 Android 中使用 exoplayer API 构建了一个简单的 mpeg-dash 播放器。它读取并播放此MPD 文件。但无法播放以下生成的 MPD 文件FFmpeg：
ffmpeg -re -i .\video-h264.mkv -map 0 -map 0 -c:a aac -c:v libx264 -b:v:0 800k -b:v:1 300k -s:v:1 320x170 -profile:v:1 baseline -profile:v:0 main -bf 1 -keyint_min 120 -g 120 -sc_threshold 0 -b_strategy 0 -ar:a:1 22050 -use_timeline 1 -use_template 1 -window_size 5 -adaptation_sets "id=0,streams=v id=1,streams=a" -f dash out.mpd
问题是什么？我无法理解。
<?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="PT16.0S"
maxSegmentDuration="PT5.0S"
minBufferTime="PT10.0S">
<ProgramInformation>
</ProgramInformation>
<ServiceDescription id="0">
</ServiceDescription>
<Period id="0" start="PT0.0S">
<AdaptationSet id="0" contentType="video" startWithSAP="1" segmentAlignment="true" bitstreamSwitching="true" frameRate="24/1" maxWidth="1920" maxHeight="960" par="2:1">
<Representation id="0" mimeType="video/mp4" codecs="avc1.4d4028" bandwidth="800000" width="1920" height="960" sar="1:1">
<SegmentTemplate timescale="12288" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startNumber="1">
<SegmentTimeline>
<S t="0" d="61440" r="2" />
<S d="13312" />
</SegmentTimeline>
</SegmentTemplate>
</Representation>
<Representation id="2" mimeType="video/mp4" codecs="avc1.42c00d" bandwidth="300000" width="320" height="170" sar="17:16">
<SegmentTemplate timescale="12288" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startNumber="1">
<SegmentTimeline>
<S t="0" d="61440" r="2" />
<S d="13312" />
</SegmentTimeline>
</SegmentTemplate>
</Representation>
</AdaptationSet>
<AdaptationSet id="1" contentType="audio" startWithSAP="1" segmentAlignment="true" bitstreamSwitching="true" lang="eng">
<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="2" />
<SegmentTemplate timescale="48000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startNumber="1">
<SegmentTimeline>
<S t="0" d="238584" />
<S d="239616" />
<S d="240640" />
<S d="50176" />
</SegmentTimeline>
</SegmentTemplate>
</Representation>
<Representation id="3" mimeType="audio/mp4" codecs="mp4a.40.2" bandwidth="128000" audioSamplingRate="22050">
<AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2" />
<SegmentTemplate timescale="22050" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startNumber="1">
<SegmentTimeline>
<S t="0" d="109564" />
<S d="110592" r="1" />
<S d="22519" />
</SegmentTimeline>
</SegmentTemplate>
</Representation>
</AdaptationSet>
</Period>
</MPD>
我的简单 ExoPlayer API 代码在这里。我的 MPD 位于本地服务器上。我得到的错误是这样的：
2022-01-20 11:49:13.751 11201-11929/com.example.myexoplayer E/ExoPlayerImplInternal: Source error.
com.google.android.exoplayer2.upstream.HttpDataSource$HttpDataSourceException: Unable to connect to http://192.168.80.80/dash/out.mpd
at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.open(DefaultHttpDataSource.java:194)
at com.google.android.exoplayer2.upstream.DataSourceInputStream.checkOpened(DataSourceInputStream.java:102)
at com.google.android.exoplayer2.upstream.DataSourceInputStream.open(DataSourceInputStream.java:65)
at com.google.android.exoplayer2.upstream.ParsingLoadable.load(ParsingLoadable.java:114)
at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:295)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:923)
Caused by: java.io.IOException: Cleartext HTTP traffic to 192.168.80.80 not permitted
at com.android.okhttp.HttpHandler$CleartextURLFilter.checkURLPermitted(HttpHandler.java:127)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:462)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:131)
at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.makeConnection(DefaultHttpDataSource.java:429)
at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.makeConnection(DefaultHttpDataSource.java:350)
at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.open(DefaultHttpDataSource.java:192)
at com.google.android.exoplayer2.upstream.DataSourceInputStream.checkOpened(DataSourceInputStream.java:102)
at com.google.android.exoplayer2.upstream.DataSourceInputStream.open(DataSourceInputStream.java:65)
at com.google.android.exoplayer2.upstream.ParsingLoadable.load(ParsingLoadable.java:114)
at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:295)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:923)