[FFmpeg-devel] [PATCH] Add WebM to the Matroska demuxer name

[Reimar Döffinger]

On Thu, Jul 15, 2010 at 03:05:51PM -0400, Alex Converse wrote:
> 2010/7/15 M?ns Rullg?rd <mans at mansr.com>:
> > Baptiste Coudurier <baptiste.coudurier at gmail.com> writes:
> >
> >> On 07/15/2010 10:32 AM, M?ns Rullg?rd wrote:
> >>> Reimar D?ffinger<Reimar.Doeffinger at gmx.de> ?writes:
> >>>
> >>>> On Thu, Jul 15, 2010 at 01:58:58AM -0400, Alex Converse wrote:
> >>>>> $subj
> >>>>>
> >>>>> Some users are getting confused. We do a similar thing for
> >>>>> "mov,mp4,m4a,3gp,3g2,mj2."
> >>>>
> >>>> And I've always considered it a bad idea.
> >>>> Changing this field means the value you need to use for -f changes
> >>>> (and MPlayer actually also relies on this name), so strictly speaking
> >>>> this would require a major version bump.
> >>>
> >>> -f matroska,webm would be nothing short of ridiculous.
> >>
> >> WTF, for demuxers, values are matched between commas. Mans, you even
> >> reviewed that patch.
> >
> > I forgot about that, and now I come to think it was probably not such
> > a good idea. ?It will break any application which enumerates the
> > demuxers and does something with the name, and as such this should be
> > considered an ABI break.
> >
> 
> That strikes me as ABI abuse. *av_find_input_format() still works. You
> could make the same argument about longnames. Where do we guarantee
> that short name lists won't grow. I don't see anything in the doxy or
> any other annotation treating shortnames and long names differently in
> any ABI regard.

Uh, the problem is that we have nothing else that could qualify as a unique
identifier for the format.
And av_find_input_format does not work for the question "is what the
autodetection found the mov format demuxer?"