On 08 Nov, batguano999 <batguano...@zoho.com> wrote: > > > >What I'm hoping to do using get_iplayer is to be able to compare such > >results with an analysis or decoding to LPCM of the flv by other means. > > i.e. use ffmpeg or similar. I'm wondering if anyone else here has > >already done this, or has comments that would help. > > > Hi Are you asking for instructions how to use FFmpeg to convert an m4a > file downloaded with get_iplayer to a different format?
No. I already know how to do something like ffmpeg -i <infilename> -f wav outfilename.wav to get the required coconut. :-) What I am asking about is if anyone has done this *and compared the results with using the 'official' BBC flash player*. Specifically by comparing the LPCM results. FWIW my 'traditional' method is to get as close as possible to a system with no needless mixings, gain changes, etc. Just to have the flash output to LPCM delivered to an external audio DAC and digital recorder. That uses the conversion method expected by the BBC. For all I know, get_iplayer'ing an flv and using ffmpeg produces bit-identical results. But I suspect not, so want to investigate. I'm wondering what - if any - measurable difference using ffmpeg (or other 'decoders' like avcodec) may introduce. And I'd do that by comparing the output LPCM as sets of data samples. What I don't know is who may have already done this, by what methods, and what their detailed results were. 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 get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer