Not a get_iplayer query, but a related question

[dinkypumpkin]

On 18/08/2012 17:22, Clive wrote:
>>> I run get_iplayer under Linux Mint 11 and it works splendidly well. I
>>> have been d/l the Proms as m4a files and finding that many of them
>>> contain acres of the following program. Does there exist a Linux gui
>>> that will enable me to trim off the excess? I have tried some of the
>> [...]
> I've just realised, I missed out an important item - I'd like it to be
> lossless.

No need for a GUI.  Just re-mux with ffmpeg using -t to specify the 
duration.  You should be able to select a cut off point to the nearest 
second with your media player.

ffmpeg -i input.m4a -t hh:mm:ss[.xxx] -acodec copy -y trimmed.m4a