On Thu, Oct 8, 2015 at 11:30 AM, Stefano Sabatini <stefa...@gmail.com> wrote: > On date Wednesday 2015-10-07 15:03:32 +0200, Jean Delvare encoded: >> The original interpolation algorithm behaved poorly on the borders and >> did not even guarantee continuity at the borders. For this reason, a >> second interpolation/blending pass was required on the borders to make >> them seamless. >> >> However, since the interpolation algorithm was improved in June 2013, >> the border issues no longer exist. The new algorithm does guarantee >> continuity at the borders, making the second pass useless. A larger >> band always increases the cumulated interpolation error. In most cases >> it also increases the average interpolation error, even though the >> samples in the band are only partially interpolated. >> >> For this reason I would like to get rid of the "band" parameter. As a >> first step, let's change its default value from 4 to 1 and document it >> as deprecated. >> >> I have benchmarked this change on a combination of input sources and >> realistic logo areas. Lowering the band value from 4 to 1 resulted in >> 8 to 39 % less interpolation error per frame (or 1 to 34 % less >> interpolation error per luma sample.) >> >> Signed-off-by: Jean Delvare <jdelv...@suse.de> >> --- >> Changes since v1: >> * Added #ifs so that the deprecated options are dropped automatically >> on next major version of libavfilter (suggested by Stefano Sabatini) >> >> doc/filters.texi | 4 +++- >> libavfilter/vf_delogo.c | 17 +++++++++++++++-- >> 2 files changed, 18 insertions(+), 3 deletions(-) > > Thanks, applied.
This seems to have broken FATE, ie: http://fate.ffmpeg.org/report.cgi?time=20151008101706&slot=x86_32-mingw-w64-dll-windows-native _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel