On Thu, Aug 25, 2016 at 5:01 AM Andy Furniss <adf.li...@gmail.com> wrote:
> > > I am testing with a somewhat artificial sample in that it's a framerate > de-interlace + scale down of a 1080i master, though it is "real" in the > sense that I may want to repair similar files where people have produced > a juddery mess by using yadif=0. > thanks for testing. > > It's very fast and my old (2010 Panasonic plasma) TV can't interpolate > it without artifacting in a few places, it can interpolate a field rate > version flawlessly and both mcfps and minterpolate do a lot better with > a 50fps master version -> 100fps, though they are still not perfect. > > As well as being fast it has overlays of varying opacity and some > repeating patterns just to make things even harder. > > Some observations while trying to get the best result - given the number > of options only a small subset could be tested: > > aobmc vs ombc, vsbmc 0 or 1 = no real difference. > now our main focus will be on "better" motion estimation that removes artifacts in fast motion, rather than little tweaks like these. > Any me method other than epzs had far too many artifacts to be used. > > Raising search_param to 48 or 64 or 128 just causes new artifacts. > that hopefully could be fixed. working on it. > > Reducing mb_size causes new artifacts. > yes for higher resolution. for very smaller, it could be essential. > bilat vs bidir - similar but bilat has some artifacts on a still shot > near the end of the defaults sample uploaded. bidir sometimes has green > near the top of the screen. > i see that green line in other samples too. investigating. > > There are of course many small artifacts, to be seen by slowmo/framestep > for both minterpolate and mcfps. Viewing fullspeed mcfps artifacts less > on the car when it touches the edges than minterpolate. Frame stepping > shows mcfps doesn't blend/blur as much on really fast moving background > as minterpolate does. > > Included in the link below (which is a tar to stop google drive making > terrible low quality/fps previews) are the 25fps master file, mcfps > interpolation to 50fps, minterpolate with default options and > minterpolate with defaults + bidir. > > > https://drive.google.com/file/d/0BxP5-S1t9VEEM2VrTzlVdGZURVk/view?usp=sharing thanks :) DSM_ _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
