Steven Liu wrote:
ffmpeg need a dash demuxer for demux the dash formats base on
https://github.com/samsamsam-iptvplayer/exteplayer3/blob/master/tmp/ffmpeg/patches/3.2.2/000001_add_dash_demux.patch
TODO: 1. support multi bitrate dash
v14 fixed: 1. fix bug: TLS connection was non-properly terminated 2.
fix bug: No trailing CRLF found in HTTP header
Thanks.
They are pretty much gone now, though I did see one TLS out of about 3
hours running (3.84s chunks)
Another user who is testing the same live stream saw eight
TLS @ 0xae75700" referring to TLS packets of unexpected length.
over a 3 hour run.
One issue that I guess is not really a bug, but on a live stream you
really need to have your clock either spot on or slow.
Ok, so maybe I should run ntpd "properly" - though not running it does
offer a workaround of setting clock back a bit (the stream mpd below has
a 10 minute buffer).
This issue = even if set my clock with ntpd -q only a small amount of
too fast drift will lead to (after a couple of hours)
[https @ 0x365e580] HTTP error 404 Not Found
[dash @ 0x3657360] Failed to open fragment of playlist 0
ntpd -q showed I was 0.2 sec fast at that point - for the purpose of
testing just setting one sec fast will quickly start getting 404s which
are not retried, so break the stream.
I notice there is a time url in the mpd - but even if that were used
initially vs clock, I still think drift would break things.
Here's the .mpd (same as link I gave before - pasting as I suspect it's
geo restricted).
<?xml version="1.0" encoding="UTF-8"?>
<MPD type="dynamic" xmlns="urn:mpeg:dash:schema:mpd:2011"
xmlns:dvb="urn:dvb:dash-extensions:2014-1"
profiles="urn:dvb:dash:profile:dvb-dash:2014,urn:dvb:dash:profile:dvb-dash:isoff-ext-live:2014"
minBufferTime="PT2.034S" maxSegmentDuration="PT3.84S"
timeShiftBufferDepth="PT10M" minimumUpdatePeriod="PT1H"
availabilityStartTime="1970-01-01T00:01:00Z"
publishTime="2017-02-01T15:13:36Z">
<!-- MPEG DASH ISO BMFF test stream -->
<!-- Lossless audio using FLAC -->
<!-- BBC Research & Development -->
<!-- For more information see http://rdmedia.bbc.co.uk -->
<!-- Email d...@rd.bbc.co.uk -->
<!-- (c) British Broadcasting Corporation 2017. All rights
reserved.-->
<ProgramInformation>
<Title>Radio 3 lossless</Title>
<Source>BBC Research and Development</Source>
<Copyright>British Broadcasting Corporation
2017</Copyright>
</ProgramInformation>
<UTCTiming schemeIdUri="urn:mpeg:dash:utc:http-xsdate:2014"
value="http://time.akamai.com/?iso"/>
<Period start="PT0S">
<AdaptationSet startWithSAP="2" segmentAlignment="true"
id="1" codecs="flac" audioSamplingRate="48000" lang="eng"
mimeType="audio/mp4">
<AudioChannelConfiguration
schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011"
value="2"/>
<Role schemeIdUri="urn:mpeg:dash:role:2011"
value="main"/>
<SegmentTemplate timescale="48000"
duration="184320" media="$RepresentationID$/$Number%06d$.m4s"
initialization="$RepresentationID$/IS.mp4" startNumber="1"
presentationTimeOffset="0"/>
<Representation id="A1" bandwidth="365000"/>
</AdaptationSet>
</Period>
<Metrics metrics="DVBErrors">
<Reporting schemeIdUri="urn:dvb:dash:reporting:2014"
value="1"
dvb:reportingUrl="http://rdmedia.bbc.co.uk/dash/errorreporting/reporterror.php";
dvb:probability="50"/>
</Metrics>
</MPD>
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