Not directly a get_iplayer matter, but may be of interest to comment... In article <capzzcno+1aruvetv7kxaxirmsywalrydf-w5-wcbwktlxu+...@mail.gmail.com>, CJB <[email protected]> wrote: > As the truncation issues pertain - the last Cabin Pressure was the > latest - I was wondering exactly where the programmes offered via > iPlayer and/or downloaded by GiP are actually sourced from.
> It appears to me that the Beeb uses a capping system to record > programmes for iPlayer as they are being aired. That is they record > programmes off air - as they are being transmitted - much like the pubic > might do with a programmable VCR. If you look at http://www.audiomisc.co.uk/BBC/AudioFactory/AudioFactory.html you can see an outline view of the current systems. All of this is AIUI... The input feeds come from the standard distribution for TX. In effect what *goes to the transmitters*. I can't comment on the input format for video. But radio comes in as 48k/24bit stereo lpcm which is the internal distribution standard. The input end servers 'record' the streams as effectively a continuous set of data so far as an 'editing' is concerned. > This would explain the truncations - especially pertinent to radio > programmes. If a programme was delayed due to say an extended news > bulletin, then it would no longer be correctly capped at the scheduled > time, and the end would indeed be truncated. Either an automated or manual 'edit' will be done. Sometimes the edit points will be wrong. But these days a request to fetch an item with a pid will prompt the system to build a defined section for streaming out. These may be cached at some level when repeat requests for the same programme are made. > I guess that if complaints are received that a programme has been > truncated then the staff replace the file with a complete one kept for > that purpose. In effect, the edit is re-done by re-specifying the start and end times to be applied upon request to the input data. However, I don't work for the BBC, so am surmising from what I have been told by some who do. I may have misunderstood. Jim -- Electronics http://www.st-and.ac.uk/~www_pa/Scots_Guide/intro/electron.htm Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html Audio Misc http://www.audiomisc.co.uk/index.html _______________________________________________ get_iplayer mailing list [email protected] http://lists.infradead.org/mailman/listinfo/get_iplayer
