On Tue, 27 Dec 2005 10:11:35 +0200 Burak BAYER <bbayer@xxxxxxxxxxxxxxx> wrote: > Niko Mikkila wrote: > > > >Softdevice currently lacks advanced deinterlacing algorithms that > >output progressive video at 50 fps instead of the normal 25 fps. > >Ghosting could be mostly eliminated with 25 fps algorithms (like > >lavcdeint in MPlayer), but the fluidity of the video will still suffer. > > > >Right now Xine and the vdr-xine plugin is your best bet to get good > >deinterlaced output. Use the tvtime post-processing plugin with > >Greedy2Frame, GreedyH or TomsMoComp algorithms (example xine command > >line is provided in vdr-xine documentation). This will require more > >processing power than Softdevice with its normal deinterlacing > >algorithms, but the adaptive algorithms in Xine also look much better. > >With cheap_mode set to 1, Greedy2Frame works very well at 720x576 on a > >600 MHz Athlon, but this may require compiling a locally optimized Xine > >binary. > > > >-- > >Niko Mikkil? > > > > Thanks for your answer.. Is there any channel changing speed losses on > xine-plugin. How about stability and long time use?? It is important.. Xine is probably slower at changing channels by default since it buffers a lot. I think the buffer sizes can be tuned in the configuration though. There should be no problems with stability at least from the MPEG-2 decoder's part. The Xine UI is a bit unstable at times (perhaps because of the custom GUI toolkit that seems to have bugs), but you could try gxine if xine-ui doesn't work for you. > How about tv-out with graphic card? I see ghosting eliminated with tv a > little bit.. Is there any way to improve it with tv-out?? The tv-outs on almost all graphics cards deinterlace the video and usually scale it unnecessarily too, so I would not recommend them. There was recently some discussion about them on this list (in November perhaps, and also in January 2005 IIRC). Older Matrox dualhead cards could be used through Softdevice and DirectFB, but it's not an easy setup and it's best suitable for interlaced CRT TV's. Progressive displays (LCD televisions, monitors) need deinterlacing which is cheapest to do in software and display through normal VGA or DVI output. > Last question I cannot work X with resolution 720x576? Can you write > your timings here?? I use a normal 1024x768@75Hz mode on a 21" CRT monitor and an LCD projector. That's because the broadcasters here in Finland are sometimes gracious enough to give us good anamorphic 16:9 video, which is best displayed by upscaling the image horizontally to 1024x576. For good deinterlacing results, you should use a refresh rate that is multiple of 50 Hz (that is, 50 Hz, 100 Hz or 150 Hz). I can only use 75 Hz, which is good enough for me. > Maybe some good deinterlace algorithms can be port to libpp .. That would be useful, so hopefully someone does it someday. The hardest part is already done since there are many good open-source algorithms made available by the DScaler project. -- Niko Mikkil?
