Fmp4 muxing with mp3 files not generating correct HLS master file

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1

On encoding mp3 content with fmp4, the master HLS file is shown below.

#EXTM3U
#EXT-X-INDEPENDENT-SEGMENTS
#EXT-X-VERSION:4
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",NAME="HLS Audio Media",LANGUAGE="en",AUTOSELECT=YES,URI="audio_160000.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",NAME="HLS Audio Media",LANGUAGE="en",AUTOSELECT=YES,URI="audio_96000.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",NAME="HLS Audio Media",LANGUAGE="en",AUTOSELECT=YES,URI="audio_320000.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",NAME="HLS Audio Media",LANGUAGE="en",AUTOSELECT=YES,URI="audio_24000.m3u8"
#EXT-X-STREAM-INF:BANDWIDTH=320000,CODECS="mp4a.40.2",AUDIO="audio"
audio_160000.m3u8

Correct me if I am wrong, but It should have three more “EXT-X-STREAM-INF” tags pointing to respective bitrates HLS files.
Also, the current BANDWIDTH to the file pointing is not correct.

2

@shubham.aggarwal thanks for reaching out.
It could be that you created Audio Medias (Mediainfo) [1], which are meant for multi-language streams instead of audio streams [2], which are meant to handle use-cases like yours, where you are looking to have several qualities.

[1] Bitmovin Docs - Encoding API Reference | Manifests
[2] Bitmovin Docs - Encoding API Reference | Manifests

Please feel free to share your encoding ID if needed.

3

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