one radio program in a series causes ffmpeg to throw an error - is this unusual?

[dinkypumpkin]

On 23/12/2014 12:56, Nick wrote:
> On Tue, 23 Dec 2014 12:15:55 +0000
> Mable Syrup <blackonesugar at yahoo.co.uk> wrote:
>> $ get_iplayer --type=radio --pid b04symns --force
> [...]
>> ffmpeg version git-N-30582-gef28c7b, Copyright (c) 2000-2011 the
>
> I just got_iplayer'd that programme OK here, perhaps your version of
> FFMPEG is a bit old? It is from 2011 after all, and whilst mine ain't

Looks like a duff file. Newer versions of ffmpeg will flag the error but 
keep re-muxing.  Since you appear to have some distro in the Ubuntu 
family, just use the default avconv (should have been installed with PPA 
build of get_iplayer) instead of an ancient version of ffmpeg. If you're 
anti-libav or wedded to your old ffmpeg for some reason, try 
--modes=hlsbest and see if that makes a difference.