On 27/06/2013 13:41, Chris Marriott wrote:
You can tell if a programme is old by looking at the PID. PIDs increase as time goes by - current ones are "B03XXXXX". So any program with a lower PID (eg "B019XXXX") is a repeat of an older programme.
Good point, though I'm don't think that scheme is fine-grained enough. That two-digit prefix rarely changes, so you'll get repeats with the same prefix as new programmes. OTOH, TV PIDs recently jumped to "02" and then on to "03" after only a month or two, while new radio programmes remain with the "02" prefix, so you would also need to watch for sorts of quick changes. It would seem TV and radio PIDs should get different treatment at the very least. You also get some corner cases like programmes that go into "Series Catch-Up" status and get a "p"-prefix PID. Thus you have a case like "Rise of the Continents", where last week's episode is on the iPlayer site with PID beginning with "b03" while the episode from 2 weeks ago has a PID beginning with "p01". Lower prefix number, but certainly not a repeat. You'd want to dig out the original PID (from the "version PID"), but that's not available in the get_iplayer cache.
I'm not sure what all that means. If you can come up with a scheme to use PIDs to reliably mark repeats, a patch or pull request will be gratefully accepted.
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