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

[richard]

On Tue Apr 12 Simon Nash wrote:

>
> I'm puzzled by this.  There is definitely no video in this file, and
> it plays OK on my Linn DS.
>
> Have you tried renaming the file to test1.m4a? 

When I renamed the test1.mp4 file with a .m4a extension it plays OK on
the Marantz. The file has to have a .m4a extension, it doesn't recognise
a .mp4 extension. 

I realised there was no video although my OS (Ubuntu) calls it a MPEG-4
video file type. Apologies. I should have thought to rename the
extension. 

> After thinking about this some more, I noticed that mp4creator 
> produces files with the ftyp atom set to mp42, even when the output 
> file extension is .m4a.  I sent Richard a patched file with ftyp set 
> to M4A for him to try.

The second file test1a.m4a plays OK on the Marantz.