On Mon, Jul 08, 2002 at 08:43:11AM +0000, Gerd Knorr wrote: > > And what about the overlay mode? Is there something in the API to provide > > accurate syncing (even frame based) in overlay mode? > > No. I hacked the bttv driver in 2.4.19-rc1 to do field syncing and changed the BTTV_FIELDNR ioctl to return the active field. Now I can use the deinterlace feature of my Matrox G400. I tried to use the deintrlacing without changing the active field and the interlace artifacts disappeared but the image looked rather blocky. And just using select() to time the field changes produces some odd flashing effects. With accurate field syncing the image looks much better. Is there any reason why this type of functionality couldn't be included in the v4l2 api? -- Ville Syrjälä syrjala@xxxxxx http://www.sci.fi/~syrjala/
