Need help with "command" function.

[Vangelis forthnet]

On Wed Nov 11 12:19:28 GMT 2015, C E Macfarlane wrote:

> --command="ffmpeg -i XfileprefixX.m4a -vn -c:a libmp3lame
> (snip)
> ffmpeg version 2.4.2
> (snip)
> configuration: --prefix=/opt/share --enable-small --enable-gpl --enable-no
> nfree --disable-debug --disable-runtime-cpudetect --disable-doc --disable-ar
> mv6 --disable-armv6t2 --disable-neon --disable-vfp --disable-vfpv3
> (snip)
> Applying option c:a (codec name) with argument libmp3lame.
> Unknown encoder 'libmp3lame'
> WARNING: flv conversion failed - retaining flv file

> No, doesn't work.  Not absolutely sure why not

Hello Charles :-)
I'm in quite a hurry now, but the first thing
that stands out from your log is that the copy
of ffmpeg you're using has been compiled
without MP3 LAME support...
So the transcoding from HE-AACv1 => MP3 fails !

Use another FFmpeg binary (or recompile yourself)
in which "--enable-libmp3lame" appears in its
configuration...

Regards