-map_metadata fails in WinFF 1.4.2

[dinkypumpkin]

On 20/04/2012 16:36, dinkypumpkin wrote:
> I don't think ffmpeg knows how to read cover art from MP4 files, so it
> won't be copied. However, it is possible to use ffmpeg to add cover art
> to the MP3 file after conversion if, e.g., you've downloaded the
> programme thumbnail with get_iplayer. The audio data is just re-muxed
> when then artwork is added, so it's quick. However, I don't see how that
> process could be automated with WinFF since it doesn't support any
> variable substitutions in the ffmpeg command lines it generates.

It's also possible to add the cover art during the conversion rather 
than via re-muxine, but you still need to have the image in a separate 
file.  Again, I'm not sure how that could be automated effectively with 
WinFF.