'Azure Media Services HLS Stream Url Change Resolution No Audio

Below is the manifest file get from Azure Media Services HLS Url. The default HLS provided have Video and Audio, but when we try to change the resolution, it became only have Video but no Audio.

#EXTM3U
#EXT-X-VERSION:7
#EXT-X-SESSION-KEY:METHOD=SAMPLE-AES,KEYFORMAT="com.apple.streamingkeydelivery",KEYFORMATVERSIONS="1",URI="skd://petronastownhallmedia.keydelivery.southeastasia.media.azure.net/FairPlay/?kid=4881e415-fb2d-45e4-a8dd-505a405cf93d"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",NAME="audio_und",LANGUAGE="und",DEFAULT=YES,AUTOSELECT=YES,CHANNELS="2",URI="QualityLevels(128000)/Manifest(audio_und,format=m3u8-aapl)"
#EXT-X-STREAM-INF:BANDWIDTH=351536,RESOLUTION=340x192,CODECS="avc1.64000d,mp4a.40.5",AUDIO="audio"
QualityLevels(200000)/Manifest(video,format=m3u8-aapl)
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=351536,RESOLUTION=340x192,CODECS="avc1.64000d",URI="QualityLevels(200000)/Manifest(video,format=m3u8-aapl,type=keyframes)"
#EXT-X-STREAM-INF:BANDWIDTH=709236,RESOLUTION=384x216,CODECS="avc1.640015,mp4a.40.5",AUDIO="audio"
QualityLevels(550000)/Manifest(video,format=m3u8-aapl)
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=709236,RESOLUTION=384x216,CODECS="avc1.640015",URI="QualityLevels(550000)/Manifest(video,format=m3u8-aapl,type=keyframes)"
#EXT-X-STREAM-INF:BANDWIDTH=1015836,RESOLUTION=512x288,CODECS="avc1.640015,mp4a.40.5",AUDIO="audio"
QualityLevels(850000)/Manifest(video,format=m3u8-aapl)
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=1015836,RESOLUTION=512x288,CODECS="avc1.640015",URI="QualityLevels(850000)/Manifest(video,format=m3u8-aapl,type=keyframes)"
#EXT-X-STREAM-INF:BANDWIDTH=1526836,RESOLUTION=704x396,CODECS="avc1.64001e,mp4a.40.5",AUDIO="audio"
QualityLevels(1350000)/Manifest(video,format=m3u8-aapl)
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=1526836,RESOLUTION=704x396,CODECS="avc1.64001e",URI="QualityLevels(1350000)/Manifest(video,format=m3u8-aapl,type=keyframes)"
#EXT-X-STREAM-INF:BANDWIDTH=2395536,RESOLUTION=960x540,CODECS="avc1.64001f,mp4a.40.5",AUDIO="audio"
QualityLevels(2200000)/Manifest(video,format=m3u8-aapl)
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=2395536,RESOLUTION=960x540,CODECS="avc1.64001f",URI="QualityLevels(2200000)/Manifest(video,format=m3u8-aapl,type=keyframes)"
#EXT-X-STREAM-INF:BANDWIDTH=3724136,RESOLUTION=1280x720,CODECS="avc1.64001f,mp4a.40.5",AUDIO="audio"
QualityLevels(3500000)/Manifest(video,format=m3u8-aapl)
#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=3724136,RESOLUTION=1280x720,CODECS="avc1.64001f",URI="QualityLevels(3500000)/Manifest(video,format=m3u8-aapl,type=keyframes)"
#EXT-X-STREAM-INF:BANDWIDTH=138976,CODECS="mp4a.40.5",AUDIO="audio"
QualityLevels(128000)/Manifest(audio_und,format=m3u8-aapl)

We have tried using / modified into following URL:

  1. Have Audio but no video

    https://xxxx/c13459a8-065e-4d86-a2aa-c95f5ededafc/365a25ee-df07-4d1f-8679-0a029fccd397.ism/QualityLevels(128000)/Manifest(audio_und,format=m3u8-aapl)

  2. No Audio no video

    https://xxxx/c13459a8-065e-4d86-a2aa-c95f5ededafc/365a25ee-df07-4d1f-8679-0a029fccd397.ism/QualityLevels(128000)/Manifest(video,audio_und,format=m3u8-aapl)

    https://xxxx/c13459a8-065e-4d86-a2aa-c95f5ededafc/365a25ee-df07-4d1f-8679-0a029fccd397.ism/QualityLevels(850000)/Manifest(video,format=m3u8-aapl,audiotrack=audio)

Any idea or suggestion regarding this issue? Thanks

azurevideo-streaminghttp-live-streamingazure-media-services


Solution 1:[1]

What player framework are you using? Are you seeing this issue in HLS.js, Shaka player or in the Native iOS AVPlayer?

  1. That is pointing to the audio only AAC track at 128Kbps.
  2. The other tracks appear to include video and audio, so I'm not sure without testing those on my own. Which I can't do unless you submit a support ticket through the Azure portal and include the details on your account and streaming endpoint. I suggest that path for faster support.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 johndeu

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