> My motivations in this context: > > - I want full field rate in video playback; to my knowledge, using > bobdeint is the only way to achieve this; > - bobdeint requires a form of vertical sync, which as far as I know the > SiS driver cannot support. > > In my ongoing quest to find an X setup that gives me jitter-free video > using bobdeint I stumbled upon a new option, found on the SiS X driver > website (http://www.winischhofer.at/linuxsispart1.shtml): > <http://www.winischhofer.at/linuxsispart1.shtml> > >> *2. Video blitter method* >> >> This second method is only supported on the SiS M650, 651, (M)661, >> (M)741, 330 and (M)760, not any older chipsets. It works entirely >> different to the overlay method: The video blitter simply copies video >> data from the video application into the framebuffer (eg. a window), >> thereby converting the data from the video color space (some YUV >> format) to RGB. All this is done by the 2D acceleration engine. >> >> The following color space formats are supported: YV12, I420, UYVY, >> YUY2, YVYU, NV12, NV21. The maximum video source size is 2046x2046. >> >> The video blitter is only very little slower than the Xv method. >> However, it's worst disadvantage is that it cannot scale the video. >> The video will always be shown in its original size; if the video is >> larger than the visible screen, it will be cropped. If it smaller, a >> black border will be drawn. Furthermore, there are no video properties >> such as contrast, brightness, etc. >> > > So, when I enable this as the video output, bobdeint starts acting like > it does when you give "bobdeint" as an argument to the "Custom Filters" > option in the Setup > Tv Settings > Playback menu; which is splitting > the screen horizontally in two halves, each displaying one field. Of > course, this is due to the fact that bobdeint only works on Xv or XvMC > output. Using this Video blitter method, the output comes from the > framebuffer, as stated above. > > My experience up till now has been that the combination of SiS + Xv + > bobdeint gives vertical jitter (now and then) because there is no > (driver or OpenGL) Vsync support. My question: can the source code of > either bobdeint or the the non-Xv video output (which one handles this?) > be modified to have the screen built up correctly, that is with the > fields interweaved and not split screen? > > Thanks, > -- Jeroen > _______________________________________________ > mythtv-dev mailing list > [email protected] > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev >
Hi I struggled with an asus pundit to. tried tv-out, wasn't happy with picture quality, after that i build a vga to rgb converter, wasn't happy with that either. I spent several days trying diffrent modelines, interlace filters etc but the bottom line is that the sis 315 is a peace of sh**t! Now i'm running a new system with a cheap Geforce MX400, and the picture quality and framerate when using xv + bob is almost better than my settop box! So do i have a point? By new hardware, you will lose your mind trying different settings on the pundit! /Staffan _______________________________________________ mythtv-dev mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
