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Re: File type for .m4a files

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In message <10npj7s$r4bt$1@solani.org>
          Sebastian Barthel <naitsabes@freenet.de> wrote:

> Am Thu, 26 Feb 2026 09:03:31 +0000 schrub Meister Bob Latham:
> 
> > In article <f349e2b05c.harriet@bazleyfamily.co.uk>,
> >    Harriet Bazley <harriet@bazleyfamily.co.uk> wrote:
> > > On 25 Feb 2026 as I do recall,
> > >           Bob Latham  wrote:
> > 
> > > I'm assuming the meta data is probably the same for the audio track in
> > > both cases... theoretically you could presumably inspect for the
> > > additional presence of video meta data and skip that file if so, but I
> > > imagine that would slow things down.
> > 
> > [Snip]
> > 
> > > Well, do you have any actual MP4 movie files?  If not, you could simply
> > > change the default icon to something more generic....
> > 
> > Please don't think I'm ungrateful for your help in finding a solution, I
> > do appreciate your input.
> > 
> > In the PC + NAS world, I think .m4a files are unique to music files and
> > contain no video. If as we move from that world to RISCOS we obliterate
> > that distinction then we have information loss. That distinction may then
> > have to be tested for, which as you pointed out will slow things down.
> 
> Since these "connections" are needed more and more, and many people will 
> have to find solutions to such "connected to other machines" problems it 
> is very good to discuss these things.
> 
> > I think I'm going for a unique mapping either &0B7 or &A62 I've just not
> > 100% certain which is best to go for. What confuses the issue for me is
> > another line in that article that says..
> > 
> > "A new filetype A62 (ADTS) was defined for .aac files (AAC encapsulated
> > in ADTS frames)."
> > 
> > Am I then likely at some point to encounter .aac files which give me
> > another issue? At least 0B7 is not allocated to another filetype.
> 
> 
> Eventually it could be a good move to ask "official" (via ROOL Forum) if 
> there is a solution that could be installed and used for all future  times.
> Means: an official filetype for .m4a audio-only Files.

That looks to me to be a good suggestion.  Add to the thread I found.
It doesn't matter that it's old; the subject is appropriate.

David

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Thread

File type for .m4a files Bob Latham <bob@sick-of-spam.invalid> - 2026-02-24 11:57 +0000
  Re: File type for .m4a files Jean-Michel <jmc.bruck@orange.fr> - 2026-02-24 19:43 +0100
    Re: File type for .m4a files Bob Latham <bob@sick-of-spam.invalid> - 2026-02-24 21:57 +0000
      Re: File type for .m4a files Jean-Michel <jmc.bruck@orange.fr> - 2026-02-24 23:39 +0100
        Re: File type for .m4a files Bob Latham <bob@sick-of-spam.invalid> - 2026-02-25 10:07 +0000
          Re: File type for .m4a files Sebastian Barthel <naitsabes@freenet.de> - 2026-02-25 11:54 +0000
            Re: File type for .m4a files Bob Latham <bob@sick-of-spam.invalid> - 2026-02-25 13:41 +0000
              Re: File type for .m4a files Harriet Bazley <harriet@bazleyfamily.co.uk> - 2026-02-25 16:42 +0000
                Re: File type for .m4a files Bob Latham <bob@sick-of-spam.invalid> - 2026-02-25 18:30 +0000
                Re: File type for .m4a files Harriet Bazley <harriet@bazleyfamily.co.uk> - 2026-02-25 22:08 +0000
                Re: File type for .m4a files Bob Latham <bob@sick-of-spam.invalid> - 2026-02-26 09:03 +0000
                Re: File type for .m4a files Sebastian Barthel <naitsabes@freenet.de> - 2026-02-26 13:53 +0000
                Re: File type for .m4a files David Higton <dave@davehigton.me.uk> - 2026-02-26 17:09 +0000
                Re: File type for .m4a files Steve Fryatt <news@stevefryatt.org.uk> - 2026-02-26 23:27 +0000
                Re: File type for .m4a files Jean-Michel <jmc.bruck@orange.fr> - 2026-02-27 08:38 +0100
                Re: File type for .m4a files Bob Latham <bob@sick-of-spam.invalid> - 2026-03-04 11:14 +0000
                Re: File type for .m4a files Chris Newman <mec@npost.uk> - 2026-03-04 13:08 +0000
                Re: File type for .m4a files Bob Latham <bob@sick-of-spam.invalid> - 2026-03-04 17:52 +0000
  Re: File type for .m4a files David Higton <dave@davehigton.me.uk> - 2026-02-25 20:09 +0000
    Re: File type for .m4a files Bob Latham <bob@sick-of-spam.invalid> - 2026-02-25 22:09 +0000
    Re: File type for .m4a files Harriet Bazley <harriet@bazleyfamily.co.uk> - 2026-02-25 22:09 +0000

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