[FFmpeg-user] FFmpeg creates m4a files that don't play on Marantz CD6003

[richard_get_iplayer]

I raised this issue sometime ago, it was fixed, but has at some stage
regressed.

Previous post:
http://ffmpeg.org/pipermail/ffmpeg-user/2011-April/000374.html

Previous fix:
http://git.videolan.org/?p=ffmpeg.git;a=commit;h=0ba8485666f532f2dbab716f74e1be1189102c89

The problem is caused if ffmpeg sets the average bit rate (avgBitrate )
in the DecoderConfigDescriptor within the esds atom to zero. Where the
avgBitrate is a non zero value, the m4a files play OK.

Noticed the problem last week when I changed from Ubuntu 10.04 (Lucid)
to Ubuntu 12.04 (Precise).

Ubuntu 10.04 (Lucid) ffmpeg 4:0.5.9-0ubuntu0.10.04.3  
Ubuntu 12.04 (Precise) fmpeg 4:0.8.5-0ubuntu0.12.04.1

Can you please refix?