>> ? ;^) > >No, not really. A'rpi not caring about interlaced output devices >simply means that he does not design around/for them. He is not >actively plotting against them or anything, just apathetic about them.
"Your donation of only 5 dollars a week, less than the price of a double-latte, will give dominance-bit-preserving assistance to these poor fields. Let the world know that apathy is not the answer. Send us money now!" Those innocent fields are getting hopelessly mangled as we stand idly by. ... >In fact, I have an experimental version of the G400 CRTC2 support code >in DirectFB in which you specify which field is first and DirectFB >keeps the field parity (right now code from CVS, dfbmga has to keep >parity itself). There is no way that I know of to get that >information from above the video output driver in MPlayer though so >it's always set to 0 and (seems to) always works. That is awesome; I'm glad to see that the (DirectFB guys) are trying to get it right. ... >I don't know about the Matrox Marvel (which I have and use lavrec to >capture from), but the bttv driver (apparently) always delivers even >(or is it odd?) field first, so in the case of somebody capturing with >bttv and playing with MPlayer, which field comes first in the VO >driver can be a static value. (Odd, even, flat, spongy? Just use "top/bottom" or "upper/lower" and everyone will agree and understand. I don't know why anyone refers to odd/even fields (except for those video engineers working in their specific domain where it is well-defined).) ... >> or (3) you've been lucky so far with your >> G400/DirectFB choosing the correct field dominance. > >Bingo! That is my guess. I am also guessing that the real-world odds >of getting video that is top-field dominant is a lot higher than the >statistical odds of it. Lucky you, indeed! The field dominance is actually completely arbitrary when grabbing from an analog source; it is set by the grabber --- and that would be you and lavrec. Luckily for you, lavrec defaults to top-field-first. If lavrec has been your only source of digital video, the odds would be *really* good that all of your video is top-field-first. DV, on the other hand, is always bottom-field-first.(*) And I use DV. :( -matt m. (*)I've never found a description which contradicts this, although I have yet to see a copy of the actual spec with my own eyes. ------------------------------------------------------- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
