mirror of
https://github.com/mpv-player/mpv
synced 2024-12-15 11:25:10 +00:00
74679ac6e1
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@16296 b3059339-0415-0410-9bf9-f77b7e298cf2
70 lines
2.0 KiB
Plaintext
70 lines
2.0 KiB
Plaintext
|
|
artifact types:
|
|
---------------------------------------------------------------------
|
|
ringing
|
|
wave or noise like patterns around sharp edges
|
|
bad: sinc, lanczos (with high filter length)
|
|
acceptable: lanczos (with low filter length), cubic, spline
|
|
ok: area, (fast)blinear, gauss, point
|
|
|
|
blur
|
|
loss of detail / high frequency
|
|
bad: gauss with high variance
|
|
acceptable: (fast)bilinear, area
|
|
ok: others
|
|
|
|
aliasing (only downscale)
|
|
straight lines look like staircases
|
|
areas of high detail look worse
|
|
regular patterns turn into a funny looking mess (moire patterns)
|
|
bad: fast bilinear, point, gauss with low variance
|
|
acceptable: area
|
|
ok: others
|
|
|
|
blocky (upscale only)
|
|
looks like the image is made of rectangular blocks like a mosaic
|
|
bad: point
|
|
ok: others
|
|
|
|
recommendations: (based upon my personal opinion many ppl might disagree ...)
|
|
---------------------------------------------------------------------
|
|
|
|
the recommended scalers for upscaling:
|
|
fast_bilinear, point if speed is important
|
|
cubic, spline, lanczos if quality is important
|
|
|
|
the recommended scalers for downscaling:
|
|
fast_bilinear, point if speed is important
|
|
gauss, bilinear if quality is important
|
|
cubic, spline, lanczos if a sharper picture is important
|
|
|
|
note: when encoding at a limited amount of bits (not constant quantizer)
|
|
then a slightly blurred input might look better after decoding than a slightly
|
|
sharpened one, especially for lower bitrates
|
|
|
|
sws numbers / names / artifact types
|
|
-------------------------------------------------------------------------
|
|
r ringing
|
|
b blurry
|
|
a aliasing (downscale only)
|
|
m mosaic (blocky) (upscale only)
|
|
|
|
-sws 0 fast bilinear bA
|
|
-sws 1 bilinear b
|
|
-sws 2 bicubic high sharpness r
|
|
low sharpness b
|
|
-sws 3 experimental ????
|
|
-sws 4 nearest neighbour AM
|
|
-sws 5 area ba
|
|
-sws 6 luma bicubic / chroma bilinear r
|
|
-sws 7 gauss low sharpness B
|
|
high sharpness AM
|
|
-sws 8 sinc R
|
|
-sws 9 lanczos long filter R
|
|
short filter b
|
|
-sws 10 bicubic spline r
|
|
|
|
Notes:
|
|
area upscale is identical to bilinear
|
|
|