Re: [Audacity-devel] FFmpeg export GSM, AMR and MP4 on Windows

[Leland <le...@au...>]

LRN wrote:
> Just committed the fix. Be kind, try latest CVS build with iTunes.
> 
Works here...on the Mac anyway.  Using the default "mp4" extension, the 
files load in Quicktime just fine.  You have to either rename them to 
"m4a", do the equivalent of "Open With...", or specifically load them 
from within iTunes to get them to load.  But, they do play fine.

When exporting, if you change the extension from mp4 to m4a, you get the 
expected warning, but it exports just fine and it can be double clicked 
in Finder to have it played in iTunes.

What's interesting is that nothing other than the extension was changed 
and the files a bit different.  I know this is expected behavior, but I 
wonder if we shouldn't ought to include an "m4a" in the format list.

Also, it doesn't appear that the "Options" are being applied correctly. 
  I'd selected bitrate=8, samplerate=96000, and profile=LTP.  iTunes 
reports it as 128kbps, 96000, and Low Complexity.

Leland