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parser.js
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const createDashParser = () => {
const getAttributeValue = (str, attr) => {
const match = str.match(new RegExp(`${attr}="([^"]*)"`, "i"));
return match ? match[1] : null;
};
const parseRepresentation = (repr) => ({
id: getAttributeValue(repr, "id"),
bandwidth: getAttributeValue(repr, "bandwidth"),
width: getAttributeValue(repr, "width"),
height: getAttributeValue(repr, "height"),
frameRate: getAttributeValue(repr, "frameRate"),
});
const parseAdaptationSet = (adaptSet) => ({
mimeType: getAttributeValue(adaptSet, "mimeType"),
representations: (adaptSet.match(/<Representation[^>]*>/g) || []).map(
parseRepresentation
),
});
const parsePeriod = (period) => ({
id: getAttributeValue(period, "id"),
start: getAttributeValue(period, "start"),
adaptationSets: (
period.match(/<AdaptationSet[^>]*>[\s\S]*?<\/AdaptationSet>/g) || []
).map(parseAdaptationSet),
});
const parseManifest = (manifest) => {
const mpdMatch = manifest.match(/<MPD[^>]*>/);
if (!mpdMatch) return null;
const mpd = mpdMatch[0];
return {
duration: getAttributeValue(mpd, "mediaPresentationDuration"),
minBufferTime: getAttributeValue(mpd, "minBufferTime"),
periods: (manifest.match(/<Period[^>]*>[\s\S]*?<\/Period>/g) || []).map(
parsePeriod
),
};
};
const parse = (manifestString) => {
return parseManifest(manifestString);
};
return { parse };
};
// 사용 예시
const dashParser = createDashParser();
const manifestString = `
<?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="PT9M56.458S"
minBufferTime="PT1.5S">
<ProgramInformation>
<Title>sample.mp4</Title>
</ProgramInformation>
<Location>http://localhost:1935/vod/_definst_/mp4:sample.mp4/manifest_w1759006020.mpd</Location>
<Period id="0" start="PT0.0S">
<AdaptationSet id="0" mimeType="video/mp4" width="424" height="240" par="16:9" frameRate="24" segmentAlignment="true" startWithSAP="1" subsegmentAlignment="true" subsegmentStartsWithSAP="1">
<SegmentTemplate timescale="90000" media="chunk_ctvideo_cfm4s_rid$RepresentationID$_cs$Time$_w1759006020_mpd.m4s" initialization="chunk_ctvideo_cfm4s_rid$RepresentationID$_cinit_w1759006020_mpd.m4s">
<SegmentTimeline>
<S t="0" d="1012500"/>
<S d="1012500"/>
<S d="1012500"/>
<S d="1012500"/>
<S d="918720"/>
<S d="1110060"/>
<S d="1057500"/>
<S d="941220"/>
<S d="1162530"/>
<S d="900000"/>
<S d="971190"/>
<S d="982530"/>
<S d="1012500"/>
<S d="933750"/>
<S d="903780"/>
<S d="907470"/>
<S d="1188720"/>
<S d="945000"/>
<S d="1061280"/>
<S d="1095030"/>
<S d="1117440"/>
<S d="993780"/>
<S d="1027530"/>
<S d="1012500"/>
<S d="1031220"/>
<S d="974970"/>
<S d="967500"/>
<S d="1031310"/>
<S d="1173690"/>
<S d="1106280"/>
<S d="1012500"/>
<S d="1012500"/>
<S d="941220"/>
<S d="1098810"/>
<S d="1008720"/>
<S d="1076220"/>
<S d="1076310"/>
<S d="967500"/>
<S d="1023750"/>
<S d="1199970"/>
<S d="911250"/>
<S d="990000"/>
<S d="1207530"/>
<S d="1001250"/>
<S d="1012500"/>
<S d="1012500"/>
<S d="1012500"/>
<S d="1012500"/>
<S d="1012500"/>
<S d="1012500"/>
<S d="1012500"/>
<S d="1012500"/>
<S d="476190"/>
</SegmentTimeline>
</SegmentTemplate>
<Representation id="p0a0r0" codecs="avc1.42c01e" sar="1:1" bandwidth="420000" />
</AdaptationSet>
<AdaptationSet id="1" mimeType="audio/mp4" lang="eng" segmentAlignment="true" startWithSAP="1" subsegmentAlignment="true" subsegmentStartsWithSAP="1">
<Role schemeIdUri="urn:mpeg:dash:role:2011" value="main"/>
<SegmentTemplate timescale="48000" media="chunk_ctaudio_cfm4s_rid$RepresentationID$_cs$Time$_w1759006020_mpd.m4s" initialization="chunk_ctaudio_cfm4s_rid$RepresentationID$_cinit_w1759006020_mpd.m4s">
<SegmentTimeline>
<S t="0" d="540000"/>
<S d="540000"/>
<S d="540000"/>
<S d="540000"/>
<S d="489984"/>
<S d="592032"/>
<S d="564000"/>
<S d="501984"/>
<S d="620016"/>
<S d="480000"/>
<S d="517968"/>
<S d="524016"/>
<S d="540000"/>
<S d="498000"/>
<S d="482016"/>
<S d="483984"/>
<S d="633984"/>
<S d="504000"/>
<S d="566016"/>
<S d="584016"/>
<S d="595968"/>
<S d="530016"/>
<S d="548016"/>
<S d="540000"/>
<S d="549984"/>
<S d="519984"/>
<S d="516000"/>
<S d="550032"/>
<S d="625968"/>
<S d="590016"/>
<S d="540000"/>
<S d="540000"/>
<S d="501984"/>
<S d="586032"/>
<S d="537984"/>
<S d="573984"/>
<S d="574032"/>
<S d="516000"/>
<S d="546000"/>
<S d="639984"/>
<S d="486000"/>
<S d="528000"/>
<S d="644016"/>
<S d="534000"/>
<S d="540000"/>
<S d="540000"/>
<S d="540000"/>
<S d="540000"/>
<S d="540000"/>
<S d="540000"/>
<S d="540000"/>
<S d="540000"/>
<S d="253968"/>
</SegmentTimeline>
</SegmentTemplate>
<Representation id="p0a1r0" codecs="mp4a.40.2" audioSamplingRate="48000" bandwidth="99000">
<AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"/>
</Representation>
</AdaptationSet>
</Period>
</MPD>
`;
const result = dashParser.parse(manifestString);
console.log(JSON.stringify(result, null, 2));