Workaround for broken(?) m4a files from ffmpeg, was Re: [PATCH] Output AAC as M4A for iTunes with metadata tags

[richard]

On Mon Apr 11 12:24 Simon Nash wrote:

>
> In the DecoderConfigDescriptor within the esds atom, there's
> a field named avgBitrate (average bit rate).  In the file that doesn't
> play, this field is set to zero.  In the file that does play, this 
> field is set to a non-zero value.

That ties in with what EasyTag was reporting. It gave an incorrect
bitrate. I referred to it earlier. See last paragraph here:

http://lists.infradead.org/pipermail/get_iplayer/2011-March/001129.html

>
> I have sent Richard a .mp4 file created in this way for him to try.

That won't play in the Marantz as its a video file. I need a m4a file to
test.