[FFmpeg-devel] [PATCH] mp4 and ipod metadata

[Måns Rullgård]

Michael Niedermayer <michaelni at gmx.at> writes:

> On Wed, Jun 11, 2008 at 01:05:12PM +0100, M?ns Rullg?rd wrote:
>> 
>> Baptiste Coudurier wrote:
>> > Michael Niedermayer wrote:
>> >> On Mon, Jun 09, 2008 at 02:30:34PM -0700, Baptiste Coudurier wrote:
>> >>> Hi all,
>> >>>
>> >>> Atm current mp4 muxer writes non standard and itunes specific metadata.
>> >>> I intend to change this behaviour and to writes these metadata only for
>> >>> -f ipod output format.
>> >>
>> >> Iam against this change unless there is an actual application for which
>> >> the tags cause problems (which really shouldnt be, applications should
>> >> ignore tags unknown to them, especially if they are within "user data").
>> >>
>> >
>> > First, correct and standards tags exists for 3gp, so itunes tags should
>> > not be written for 3gp, nor for mov since equivalent exist.
>> >
>> > Then, as a general attitude, Im against writing non standard features in
>> > perfectly defined standards.
>> >
>> > If the user wants them he can use -f ipod format, we are not removing
>> > support for metadata. We created a specific format for this, please
>> > let's use it and stop spreading that mp4 is ipod/itunes format.
>> 
>> I'm with Baptiste on this one.
>
> But you arent mov/mp4 maintainer, while i am and i object to the proposed
> change unless the existing functionality is provided by some other means.
>
> [existing functionality] being having the ipod tags (which do no harm) in
> other mp4 variants so they can be played on more players.

How about a command line switch to select metadata format(s)?

-- 
M?ns Rullg?rd
mans at mansr.com