Comment 86 for bug 602934

Thanks for the tips, Benjamin.

Leland, I applied v10 and I exported all four FFmpeg formats using FFmpeg HEAD
and all three available formats (amr is not available) uing the Ubuntu FFmpeg.
I imported the seven files using both versions of FFmpeg.

My only issue was with the stereo m4a I exported using Ubuntu's FFmpeg so using
the native aac encoder. This is the log when importing it into Audacity with
either version of Audacity:
Error: Stream 0 start_time = 0, that would be 0.000000 milliseconds.

If I use Ubuntu's FFmpeg at the Audacity CLI with AUdacity HEAD or 1.3.12 I get
no export at all and

"/usr/bin/ffmpeg: relocation error: /usr/local/lib/libswscale.so.0: symbol
av_opt_set_defaults, version LIBAVUTIL_50 not defined in file libavutil.so.50
with link time reference"

Not sure why it does not look in /usr/lib/ but I guess that's the problem.

Maybe I should just unintall FFmpeg HEAD now and rebuild Audacity HEAD with v10
to satisfy myself Audacity HEAD patched is OK with the native AC encoder?
However shouldn't Audacity sense a problem when I export M4A with Ubuntu FFmpeg
instead of treating you to its (very long) M4A export progress dialogue?