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

Baptiste Coudurier baptiste.coudurier
Wed Jun 11 07:54:48 CEST 2008

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.

Baptiste COUDURIER                              GnuPG Key Id: 0x5C1ABAAA
Smartjog USA Inc.                                http://www.smartjog.com
Key fingerprint                 8D77134D20CC9220201FC5DB0AC9325C5C1ABAAA

More information about the ffmpeg-devel mailing list