[PATCH] Output AAC as M4A with metadata tags

[dinkypumpkin]

On 1 Apr 2011, at 11:11, Roger Burton West wrote:

> I don't have scope to test this in place, but broadly speaking I would
> expect you could get away with something like this. Set up @cmd1 and
> @cmd2 to be the first and second system() calls, then:
> 
> my $buffersize=1024*4096;
> 
> open(INPUT,'-|', at cmd1); # or report the error
> binmode INPUT;
[snip]

I would suggest writing to an intermediate AAC file instead of using a pipe.  That way, if something goes wrong, the AAC artefact is left available for debugging.  Just remove upon successful creation of m4a file.