slartibartfast wrote: 
> Is BBC skipback limited to 6 hours? Test Match Special the other day was
> 8 hours 45 minutes. I can't remember if I actually listened to the start
> but I assume it skipped back to the start which would have been 7 hours
> at the time .
> 
> Sent from my SM-G900F using Tapatalk

For DASH - the details are in the DASH MPD for the station and the
parameter "timeShiftBufferDepth"  - check this morning and it is set for
6 hours.  It could be changed by BBC but I suspect not quickly as it
would probably require changing server buffer space on multiple regional
nodes in the CDN networks. 

The five live sport extra MPD URL for non UK (only 48k & 96k for non UK)

http://a.files.bbci.co.uk/media/live/manifesto/audio/simulcast/dash/nonuk/dash_low/ak/bbc_radio_five_live_sports_extra.mpd

Code:
--------------------
    
  <?xml version="1.0" encoding="utf-8"?>
  <MPD xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xmlns="urn:mpeg:dash:schema:mpd:2011" 
xmlns:dvb="urn:dvb:dash:dash-extensions:2014-1"
  xsi:schemaLocation="urn:mpeg:dash:schema:mpd:2011 
http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd";
  type="dynamic" availabilityStartTime="1969-12-31T23:59:44Z"
  minimumUpdatePeriod="PT6H" timeShiftBufferDepth="PT6H" 
maxSegmentDuration="PT7S" minBufferTime="PT3.200S"
  
profiles="urn:dvb:dash:profile:dvb-dash:2014,urn:dvb:dash:profile:dvb-dash:isoff-ext-live:2014"
  publishTime="2019-03-25T10:49:33">
  
  <UTCTiming schemeIdUri="urn:mpeg:dash:utc:http-iso:2014" 
value="http://time.akamai.com/?iso"; />
  
  <BaseURL dvb:priority="1" dvb:weight="1" 
serviceLocation="ak">http://as-dash-ww-live.akamaized.net/pool_904/live/ww/bbc_radio_five_live_sports_extra/bbc_radio_five_live_sports_extra.isml/dash/</BaseURL>
  
  <Period id="1" start="PT0S">
  <AdaptationSet group="1" contentType="audio" lang="en" minBandwidth="48000" 
maxBandwidth="96000"
  segmentAlignment="true" audioSamplingRate="48000" mimeType="audio/mp4" 
codecs="mp4a.40.5" startWithSAP="1">
  <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" 
initialization="bbc_radio_five_live_sports_extra-$RepresentationID$.dash"
  media="bbc_radio_five_live_sports_extra-$RepresentationID$-$Number$.m4s" 
startNumber="1" duration="307200"/>
  <Representation id="audio=48000" bandwidth="48000"/>
  <Representation id="audio=96000" bandwidth="96000"/>
  </AdaptationSet>
  
  </Period>
  </MPD>
  
--------------------


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