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dashc's Issues

The adaptation does not work if the representations are not ordered descending by bandwidth

Hello,

Thank you for sharing your project!

I was testing your tool and I observed that it does not adapt if the representation list is not ordered descending by bandwidth (it always choose the biggest rate if ordered ascending). I tried to find the problem in the code, but I know nothing about OCAML :/

With the following MPD the player stalls but does not adapt to a lower quality.

<?xml version="1.0"?>
<!-- MPD file Generated with GPAC version 0.7.1-revrelease  at 2018-07-20T15:28:07.015Z-->
<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" minBufferTime="PT1.500S" type="static" mediaPresentationDuration="PT0H10M34.634S" maxSegmentDuration="PT0H0M2.000S" profiles="urn:mpeg:dash:profile:isoff-live:2011,http://dashif.org/guidelines/dash264">
 <ProgramInformation moreInformationURL="http://gpac.io">
  <Title>BBB</Title>
 </ProgramInformation>

 <Period duration="PT0H10M34.634S">
  <AdaptationSet segmentAlignment="true" bitstreamSwitching="true" maxWidth="3840" maxHeight="2160" maxFrameRate="30" par="16:9" lang="und">
   <SegmentTemplate initialization="manifest_init.mp4"/>
   <Representation id="1" mimeType="video/mp4" codecs="avc3.640033" width="3840" height="2160" frameRate="30" sar="1:1" startWithSAP="1" bandwidth="16798960">
    <SegmentTemplate timescale="15360" media="bbb_3840x2160_17000000.0_dash$Number$.m4s" startNumber="1" duration="30720"/>
   </Representation>
   <Representation id="2" mimeType="video/mp4" codecs="avc3.640033" width="3840" height="2160" frameRate="30" sar="1:1" startWithSAP="1" bandwidth="19768008">
    <SegmentTemplate timescale="15360" media="bbb_3840x2160_20000000.0_dash$Number$.m4s" startNumber="1" duration="30720"/>
   </Representation>
  </AdaptationSet>
 </Period>
</MPD>

With this MPD the player adapts as I was expecting.

<?xml version="1.0"?>
<!-- MPD file Generated with GPAC version 0.7.1-revrelease  at 2018-07-20T15:28:07.015Z-->
<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" minBufferTime="PT1.500S" type="static" mediaPresentationDuration="PT0H10M34.634S" maxSegmentDuration="PT0H0M2.000S" profiles="urn:mpeg:dash:profile:isoff-live:2011,http://dashif.org/guidelines/dash264">
 <ProgramInformation moreInformationURL="http://gpac.io">
  <Title>BBB</Title>
 </ProgramInformation>

 <Period duration="PT0H10M34.634S">
  <AdaptationSet segmentAlignment="true" bitstreamSwitching="true" maxWidth="3840" maxHeight="2160" maxFrameRate="30" par="16:9" lang="und">
   <SegmentTemplate initialization="manifest_init.mp4"/>
   <Representation id="1" mimeType="video/mp4" codecs="avc3.640033" width="3840" height="2160" frameRate="30" sar="1:1" startWithSAP="1" bandwidth="19768008">
    <SegmentTemplate timescale="15360" media="bbb_3840x2160_20000000.0_dash$Number$.m4s" startNumber="1" duration="30720"/>
   </Representation>
   <Representation id="2" mimeType="video/mp4" codecs="avc3.640033" width="3840" height="2160" frameRate="30" sar="1:1" startWithSAP="1" bandwidth="16798960">
    <SegmentTemplate timescale="15360" media="bbb_3840x2160_17000000.0_dash$Number$.m4s" startNumber="1" duration="30720"/>
   </Representation>
  </AdaptationSet>
 </Period>
</MPD>

Thanks!

Showing error package "cohttp" doesn't exist in the current project for ocaml-cohttp version 1.2.0

I am trying installing DashC from the last 30 days. Every time I faced the same problem as mentioned in the subject or title. You people must provide a clear installation guide. Why cohttp doesn't exist in the current directory. Similarly, a message came, that cohttp pinned to GitHub.
Atleast provide complete commands to run this on Ubuntu 16.04. The guide you provided on GitHub is not enough.

Thanks

small bit of help

Hi Bud,

Can you add "curl" to the list of dependencies in the configure file.

I tried adding dashc to a clean install of ubuntu 18.4 and the problems nearly killed me :)

Thanks,

Hope life is good

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