>> Dan, is it possible that the compositor is adding an aliasing effect? I
> expect that the pango image will not be the same dimensions as the frame - > and > therefore the compositor will scale it. Is that correct? >> > > Yes, there are significant quality issues. The composite bounding > geometry being used here is set for 100% = the size of the profile. > So, I doubt that it is scaling. However, if you use a non-square pixel > profile, then the title's is going to be scaled horizontally to > conform its square pixels to the profile's sample aspect ratio. If you > combine that with the sdl consumer's default scaler setting of nearest > neighbor, you will get poor quality. However, in my brief tests I > specifically avoided these pitfalls. I even found the problem when > using the Qt-based kdenlive titler. Certainly, the combination of the > colors chosen and SD resolution limit the quality, but I noticed that > the affine transition's compositor does give better results. The > regular composite transition uses yuv422 with its reduced chroma > resolution, and that at least partially contributes to the problem. > Perhaps when you combine that with composite's lack of interpolation > and these colors and low resolution. Makes sense. I did try with an HD profile and I saw the quality improve - but the vertical edges still weren't completely smooth. I guess it is what it is until someone takes some time to make it better. ~BM ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Mlt-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mlt-devel
