Audio/Video Out of Sync

[MacFH - C E Macfarlane]

Please see below ...

> -----Original Message-----
> From: get_iplayer [mailto:get_iplayer-bounces at lists.infradead.org] On
> Behalf Of tellyaddict
> Sent: 10 August 2016 17:13
> To: get_iplayer
> Subject: Re: Audio/Video Out of Sync
> 
> My understanding of what Jim has said is that all the HLS recording modes
are
> legacy streams served only by Akamai. For these legacy streams, the BBC
> send the programme files to Akamai and they (Akamai) then segment and
> upload the programme to their servers. It seems that the processing that
> Akamai are doing is what is at fault and causing the missing segment
errors
> that we are seeing.
> 
> The new generation of HLS streams are the ones served by both Akamai and
> Limelight. In 2.95 they are the HVF modes. These programmes are
> segmented and packaged by the BBC and then sent to Akamai. Akamai are
> not processing these files and they are fault free.
> 
> The Olympics are mostly only being processed into HVF format, so the BBC
is
> doing all the processing of these and Akamai are NOT being asked to
process
> them for HLS (on the legacy system) which is why this option is not
available
> on most Olympics content.

That successfully shoots down my tentative explanation, but unfortunately
doesn't supply a better one.  Based on your superior knowledge of both GiP,
and the BBC system, what is your understanding of why these problems started
to occur about a month ago, bearing in mind that I've seen at least one in a
DASH download as well (the night before last, last night's downloads were
error free).