farrina wrote: > Your reference to BBCiPlayer menu "normally" choosing Akamai - is this > just for "live" streaming or all streaming (ie including listen again) ?
The main menu use akamai for Live and BBC chooses for Listen Again. > My existing live streaming, presumably using Akamai, work fine over my > GB VPN whereas listen again frequently does not, which suggests that > either Akamai are discriminating between live and listen again feeds or > that listen again is served from an alternative CDN. I would find that hard to believe (as if akamai is doing the blocking it would be applied to all services). More likely some LIsten Again are being handled by akamai and some by Limelight. > I was actually unaware of the "Listen Live alt CDN" option. > Interestingly my "live" feeds fail when using my GB VPN and the alt CDN > option (presumably Limelight), The "alt CDN" menu provide an easy test for VPN blocking as sometime one works and not the other and maybe later vice versa. > I am probably being over simplistic and failing to appreciate the > complexities of the situation/code, but is there a comparable "switch" > available for listen again programs ? No. IIRC it used to be possible in the plugin (choice in DASH MPD) but I think BBC now do load balancing at top level. I would also be interested to learn (only at a high level - I'm not a geek!) as to how your algorithms differ between "Listen Live" and "Listen Live - alt CDN" ie how you determine the appropriate connection/destination. The DASH MPD (equivalent to playlist ) holds the info on a program. With MPD DASH can offer different services and rate. The top level URL is a BBC one http://open.live.bbc.co.uk/mediaselector/6/redir/version/2.0/mediaset/audio-syndication-dash/proto/http/vpid/b047w54l But when a "GET " is done, request is directed to a Akamai or Limelight service - so choice is done by BBC. Plugin just uses the redirected URL which have been provided to it. https://aod-dash-ww-live.akamaized.net/usp/auth/vod/piff_abr_full_audio/687b47-b047w54l/vf_b047w54l_bbbc235d-fb6a-4117-b813-faea145d7fc3.ism/pc_hd_abr_v2_nonuk_dash_master.mpd https://aod-dash-ww-live.bbcfmt.hs.llnwd.net/usp/auth/vod/piff_abr_full_audio/fd4c5c-m00046q1/vf_m00046q1_b1e24314-51ce-42bb-8b63-baa404653b5d.ism/dash/vf_m00046q1_b1e24314-51ce-42bb-8b63-baa404653b5d-audio_eng_1=96000.dash CDN is llnw vs akamaized in url (above URLs nto a great example but only ones I had on hand). For live streams the plugin is in control - service provider and region are part of the URL (i.e. ak vs llnw and uk vs nonuk) and speed (i.e. dash_low, dash_full) You can compared UK vs non UK MPD by downloag the MPD fdor Radio 1 http://a.files.bbci.co.uk/media/live/manifesto/audio/simulcast/dash/nonuk/dash_low/ak/bbc_radio_one.mpd http://a.files.bbci.co.uk/media/live/manifesto/audio/simulcast/dash/uk/dash_full/ak/bbc_radio_one.mpd http://a.files.bbci.co.uk/media/live/manifesto/audio/simulcast/dash/uk/dash_full/llnw/bbc_radio_one.mpd http://a.files.bbci.co.uk/media/live/manifesto/audio/simulcast/dash/nonuk/dash_low/llnw/bbc_radio_one.mpd ------------------------------------------------------------------------ bpa's Profile: http://forums.slimdevices.com/member.php?userid=1806 View this thread: http://forums.slimdevices.com/showthread.php?t=110459 _______________________________________________ plugins mailing list plugins@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/plugins
