Support for SegmentURL@indexRange attribute on SegmentList

[sunilkumarmohanty]

• What version of Shaka Player are you using?

  • Can you reproduce the issue with our latest release version? Yes

  • Can you reproduce the issue with the latest code from master?
    Yes

• Are you using the demo app or your own custom app?
  I am using the demo app

• What browser and OS are you using?

Chrome on Mac

• What did you do?

MPD File format

<Period id="1" duration="PT0H9M56.459S"> <AdaptationSet segmentAlignment="true" bitstreamSwitching="true" maxWidth="854" maxHeight="480" maxFrameRate="24" par="16:9" lang="und"> <SegmentList> <Initialization sourceURL="bbb_320_24_dash_set1_init.mp4"/> </SegmentList> <Representation id="1" mimeType="video/mp4" codecs="avc3.64000D" width="320" height="240" frameRate="24" sar="4:3" startWithSAP="1" bandwidth="292021"> <BaseURL>bbb_320_24_track1_dash.mp4</BaseURL> <SegmentList timescale="12288" duration="122880"> <SegmentURL mediaRange="1061-258684" indexRange="1061-1332"/> <SegmentURL mediaRange="258685-726301" indexRange="258685-258956"/> <SegmentURL mediaRange="726302-1216364" indexRange="726302-726573"/> <SegmentURL mediaRange="1216365-1877332" indexRange="1216365-1216636"/> <SegmentURL mediaRange="1877333-2364205" indexRange="1877333-1877604"/> <SegmentURL mediaRange="2364206-2696636" indexRange="2364206-2364477"/> <SegmentURL mediaRange="2696637-3022175" indexRange="2696637-2696908"/> ...

• What actually happened?

I get the below message in the developer console

We do not support the SegmentURL@indexRange attribute on SegmentList. We only use the SegmentList@duration attribute or SegmentTimeline, which must be accurate.

Is there plan to support SegmentURL

Thanks & Regards
Sunil

[TheModMaker]

We have no plans to support indexRange. This feature would require a large number of extra network requests just to get info about segment times. Having this defies the point of a manifest, the manifest should contain the times of the segments so we don't have to download every segment first. If you want to encode segment times in the container, you should be using SegmentBase.

Note that we do support SegmentURL, but we don't support the indexRange attribute. We only support SegmentURL when it is used with the duration attribute or SegmentTimeline. This allows us to get the segment times from the manifest.

I know that GPAC uses indexRange, but usually the duration is accurate.

[joeyparrish]

Since we have no plans to support this feature at this time, I'm marking this as "will not implement" and closing. If you feel strongly about it, please let us know and we can discuss further.