[Ffmpeg-devel] Re: ffmpeg "wide" atom
Tue Aug 22 22:39:27 CEST 2006
On Mon, Aug 21, 2006 at 02:48:52PM +0200, Baptiste Coudurier wrote:
> Richard S. wrote:
> > hannes schrieb:
> >> i'd just like to tell you that not all mp4 players support the wide atom (e.g.
> >> PV Player, Nintendo Play-Yan).
> >> is there a workaround? or can this part of the code be modified?
> >> thanks
> >> hannes
> > I couldn't find anything about the "wide" atom/box in the MPEG 4 spec,
> > it seems only be mentioned in the QuickTime File Format.
> I didn't find anything either. Attached patch always write 64 bit mdat
> atom instead of using 'wide' atom.
maybe mp4 doesnt mention "wide" but it should IMHO mention someting like
"unknown atoms must be ignored" without that iso could never add a new
atom without breaking all existing demuxers, that seems unlikely to me
furthermore always writing a 64bit mdat will break demuxers which dont
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