On Sun, Aug 28, 2016 at 11:31 AM, Paul B Mahol <[email protected]> wrote:
> On Sat, Aug 27, 2016 at 2:45 PM, Robert Krüger <[email protected]> > wrote: > > > > what is the way to best contribute with test cases? I have two samples > that > > I use for testing, so far the results look very, very promising but there > > are still a few artefact problems, so these could maybe serve as a good > > test case. In some cases the artefacts almost certainly look like there > is > > a bug in motion vector calculation as a very large area suddenly begins > to > > move in which really only a small part is/should be moving. > > > > How do I make this available to you or other devs at this stage? Just > trac > > tickets or is it too early for that and you would like to work on this > > differently? After all it is always a grey area, when this can be > > considered solved, as it is a process of gradual improvements, so maybe > > it's not well-suited for a ticket. > > > > Let me know. Happy to contribute samples and some testing time here and > > there. > > > You can provide them either publicly or privately to any of devs > interested. > I'm always interested in short samples exhibiting the problem. > > OK, here are two short samples which I used to check the suitability of minterpolate to create super-slow-motion shots from suitable motives: https://www.dropbox.com/s/rklhbi6zxyrvwho/reload-gun.mov?dl=1 https://www.dropbox.com/s/c7kcqd4w8ksgpqv/running.mov?dl=1 for example, I tried this: ffmpeg -i running.mov -vf minterpolate=fps=250:mc_mode=obmc:me=epzs:me_mode=bidir:vsbmc=1:search_param=64:mb_size=8 -c:v mpeg4 -q:v 1 -an -y running-250-obmc-bidir-sp64-mb8-vsbmc-epzs-n.mov Both videos look very good except for a few artefacts: 1) In the reload-gun example parts of the wall (a thin strip underneath the magazine) move which looks like incorrect motion vectors (ca. 00:00:00:090 in the result) 2) In the running example the hand shows noticeable artefacts, especially towards the end of the video _______________________________________________ ffmpeg-devel mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
