compatibility with dash.js and shaka player

[nickdesaulniers]

So I'm testing with two web based DASH clients, dash.js and shaka player. They both work with manifests generated from mp4-dash.py, but seem to only fetch segments from output/video/1 which is the lowest resolution, while streaming off of localhost. They also seem to be unable to cycle segments of bitrates. I will file issues in their bug trackers and reference all of them to see f we can figure out where the incompatibility lies. Se also: Dash-Industry-Forum/dash.js#587 and shaka-project/shaka-player#100

Manifest looks like:

<?xml version="1.0" ?>
<MPD mediaPresentationDuration="PT1M0.08S" minBufferTime="PT3.00S" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" xmlns="urn:mpeg:dash:schema:mpd:2011">
  <!-- Created with Bento4 mp4-dash.py, VERSION=1.6.0-594 -->
  <Period>
    <!-- Audio -->
    <AdaptationSet mimeType="audio/mp4" segmentAlignment="true" startWithSAP="1">
      <SegmentTemplate duration="3000" initialization="$RepresentationID$/init.mp4" media="$RepresentationID$/seg-$Number$.m4f" startNumber="1" timescale="1000"/>
      <Representation audioSamplingRate="22050" bandwidth="130635" codecs="mp4a.40.2" id="audio/und">
        <AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"/>
      </Representation>
    </AdaptationSet>
    <!-- Video -->
    <AdaptationSet mimeType="video/mp4" segmentAlignment="true" startWithSAP="1">
      <SegmentTemplate duration="3000" initialization="$RepresentationID$/init.mp4" media="$RepresentationID$/seg-$Number$.m4f" startNumber="1" timescale="1000"/>
      <Representation bandwidth="170203" codecs="avc1.42C00D" frameRate="24" height="144" id="video/1" scanType="progressive" width="256"/>
      <Representation bandwidth="405617" codecs="avc1.42C014" frameRate="24" height="216" id="video/2" scanType="progressive" width="384"/>
      <Representation bandwidth="563833" codecs="avc1.42C015" frameRate="24" height="270" id="video/3" scanType="progressive" width="480"/>
      <Representation bandwidth="718137" codecs="avc1.42C015" frameRate="24" height="316" id="video/4" scanType="progressive" width="560"/>
      <Representation bandwidth="698854" codecs="avc1.42C01E" frameRate="24" height="360" id="video/5" scanType="progressive" width="640"/>
    </AdaptationSet>
  </Period>
</MPD>

[barbibulle]

That's puzzling.
I'm able to play multi-rate streams with both shaka and dash.js
Here's a test stream (6 bitrates) that makes it easy to see how bitrates are selected (the bitrate and resolution are overlayed on the picture): http://www.bok.net/dash/tears_of_steel/cleartext/stream.mpd

[nickdesaulniers]

Yes, that manifest works for me as well.

[nickdesaulniers]

oops, PEBKAC