Checking available modes before download

[Alan Milewczyk]

I use the --tvmode=best switch to download the best available mode but 
as mentioned in a previous post sometimes the 832x468 version is 
downloaded in a series where 1280x720 is the norm.

I keep an eye out for programme repeats to get the "full-fat" version 
but I was wondering if it is possible to interrogate get_iplayer to 
determine which modes are available prior to download?

Thanks

Alan