[gst-devel] interlacing?

[Ronald Bultje]

Hey,

On 2001.10.03 16:29:36 +0200 Xavier Bestel wrote:
> le mer 03-10-2001 at 14:20 Ronald Bultje a écrit :
> > Then, I can simply use:
> >
> >   caps = GST_CAPS_NEW ("v4lmjpegsrc_caps", "video/jpeg", gst_props_new(
> >     "width",       GST_PROPS_INT(plugin->width),
> >     "height",      GST_PROPS_INT(plugin->height),
> >     "interlacing", GST_PROPS_INT(plugin->interlacing),
> >     NULL));
> > 
> > in my gst_*_create_caps() function and be sure that other plugins also
> know
> > that 0 is actually not-interlaced and 1 is TFF and 2 is BFF. So, is
> this
> > acceptable?
> 
> If you put a filter that e.g. drops each third frame (to speed up
> video), your ordering is lost. Using dparams you can even imagine more
> complex operations on frame selection.
> How about attaching the top/bottom field information (or even a superset
> of this) directly to each buffer ?

The single buffer contains both fields, so that wouldn't be a problem :-),
I just need to figure out a way of telling the other plugins the order of
the fields within that buffer.

Ronald

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