Commit Graph

11 Commits

Author SHA1 Message Date
Lou Logan
890320b1c0 doc/scaler: mention default scaling algorithm
Default is "bicubic".

Signed-off-by: Lou Logan <lou@lrcd.com>
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
2017-01-09 12:58:25 -09:00
Bela Bodecs
dec23859b0 vf_scale: eval, param0 and param1 documentation
Documentation of eval, param0 and param1 parameters

Signed-off-by: Bela Bodecs <bodecsb@vivanet.hu>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-01-20 17:31:01 +01:00
Ganesh Ajjanagadde
3b2000c2bf doc/scaler, swscale/options: use proper capitalization
Proper names should be capitalized in all user facing API as far as
possible. The option names themselves have not been changed since:
1. We consistently keep option names in lower case.
2. Changing them would break existing scripts.

The converse is also true: improper names should not be capitalized
generally.

Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-10-10 19:32:56 +02:00
Michael Niedermayer
c5ebeaa308 swscale/alphablend: Support SWS_ALPHA_BLEND_CHECKERBOARD
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-08-09 17:11:53 +02:00
Michael Niedermayer
d0e0757e9a swscale: Implement alphablendaway for planar 4:4:4 formats
Fixes Ticket4746

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-08-08 13:24:52 +02:00
Øyvind Kolås
3e6016622e swscale: add two spatially stable dithering methods
Both of these dithering methods are from http://pippin.gimp.org/a_dither/ for
GIF they can be considered better than bayer (provides more gray-levels), and
spatial stability - often more than twice as good compression and less visual
flicker than error diffusion methods (the methods also avoids error-shadow
artifacts of diffusion dithers).

These methods are similar to blue/green noise type dither masks; but are
simple enough to generate their mask on the fly. They are still research work
in progress; though more expensive to generate masks (which can be used in a
LUT) like 'void and cluster' and similar methods will yield superior results
2014-03-25 13:48:06 +01:00
Michael Niedermayer
575b957758 dox/scaler:fix bicubiclin typo
See Ticket3486

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-03-24 22:04:52 +01:00
Stefano Sabatini
8fafaf1834 doc: move sws_dither option description to scaler.texi
That's the more proper place where the scaler options should be
documented.
2013-09-30 16:54:46 +02:00
Stefano Sabatini
d17aaad630 doc/filters/scale: mention and link scaler options 2013-09-30 16:50:44 +02:00
Michael Niedermayer
31b6300f4d doc: try to add a link from the vf_scale sws_flags to the scaler docs
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-09-30 16:09:58 +02:00
Stefano Sabatini
702e743827 doc: move ffmpeg-scaler.texi content to separated file
This should simplify inclusion in monolithic tool manuals.
2013-04-05 10:11:57 +02:00