별도의 audio 파일 사용

  • video tag 에 system-bitrate와 codecs에 video track 정보만 기록한다.

  • smil 파일내에 audio tag가 존재 하기 때문에 video tag에 있는 파일은 video track만 인식 한다.

smil 파일

<smil>
􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠<body>
􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠<playlist>
􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠<video􀂠src="Operation_Chromite_t31.mp4"􀂠system-bitrate="
382000"􀂠codecs="avc1.100.31"􀂠resolution="480x272"􀂠group-id="audio0"/>
􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠<video􀂠src="Operation_Chromite_t32.mp4"􀂠system-bitrate="
762000"􀂠codecs="avc1.100.31"􀂠resolution="640x360"􀂠group-id="audio0"/>
􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠<video􀂠src="Operation_Chromite_t33.mp4"􀂠system-bitrate="
1014000"􀂠codecs="avc1.100.31"􀂠resolution="856x480"􀂠group-id="audio0"/>
􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠<video􀂠src="Operation_Chromite_t34.mp4"􀂠system-bitrate="
2022000"􀂠codecs="avc1.100.31"􀂠resolution="1280x720"􀂠group-id="audio0"/>
􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠<video􀂠src="Operation_Chromite_t35.mp4"􀂠system-bitrate="
5047000"􀂠codecs="avc1.100.31"􀂠resolution="1920x1080"􀂠group-id="audio0"/>
􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠<textstream􀂠system-language="en"􀂠name="English"􀂠type="
vtt"􀂠src="Operation_Chromite_subtitle_English.vtt"/>
􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠<audio􀂠src="Operation_Chromite_audio_hindi.m4a"􀂠
system-bitrate="256000"􀂠codecs="mp4a.40.2"􀂠system-language="hindy"􀂠name="Hindi"􀂠group-id="audio0"
/>
􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠<audio􀂠src="Operation_Chromite_audio_korean.m4a"􀂠
system-bitrate="256001"􀂠codecs="mp4a.40.2"􀂠system-language="kr"􀂠name="Korean"􀂠group-id="audio0"/>
􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠</playlist>
􀂠􀂠􀂠􀂠􀂠􀂠􀂠􀂠</body>
</smil>

manifest 응답

#EXTM3U
#EXT-X-VERSION:4
#EXT-X-STREAM-INF:BANDWIDTH=638000,AVERAGE-BANDWIDTH=638016,CODECS="avc1.100.31,mp4a.4
0.2",RESOLUTION=480x272,FRAME-RATE=29.97,AUDIO="audio0",SUBTITLES="subs"􀂠
video_382000.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=1018000,AVERAGE-BANDWIDTH=1018376,CODECS="avc1.100.31,mp4
a.40.2",RESOLUTION=640x360,FRAME-RATE=29.97,AUDIO="audio0",SUBTITLES="subs"􀂠
video_762000.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=1270000,AVERAGE-BANDWIDTH=1269712,CODECS="avc1.100.31,mp4
a.40.2",RESOLUTION=856x480,FRAME-RATE=29.97,AUDIO="audio0",SUBTITLES="subs"􀂠
video_1014000.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=2278000,AVERAGE-BANDWIDTH=2277784,CODECS="avc1.100.31,mp4
a.40.2",RESOLUTION=1280x720,FRAME-RATE=29.97,AUDIO="audio0",SUBTITLES="subs"􀂠
video_2022000.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=5303000,AVERAGE-BANDWIDTH=5303224,CODECS="avc1.100.31,mp4
a.40.2",RESOLUTION=1920x1080,FRAME-RATE=29.97,AUDIO="audio0",SUBTITLES="subs"􀂠
video_5047000.m3u8
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio0",DEFAULT=YES,AUTOSELECT=YES,LANGUAGE="hindy",
NAME="Hindi",CHANNELS="2",URI="audio_256000.m3u8"􀂠
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio0",DEFAULT=NO,AUTOSELECT=NO,LANGUAGE="kr",NAM
E="Korean",CHANNELS="2",URI="audio_256001.m3u8"􀂠
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",DEFAULT=NO,LANGUAGE="en",NAME="English",URI
="subtitle_0.m3u8"􀂠
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",DEFAULT=NO,LANGUAGE="kr",NAME="Korean",URI=
"subtitle_1.m3u8"
Previous추가된 AttributeNext별도의 audio file과 mp4 파일에 들어 있는 audio track 을 사용

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