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Diffstat (limited to 'DOCS/tech/swscaler_methods.txt')
| -rw-r--r-- | DOCS/tech/swscaler_methods.txt | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/DOCS/tech/swscaler_methods.txt b/DOCS/tech/swscaler_methods.txt index 65e180a829..20e2a03b79 100644 --- a/DOCS/tech/swscaler_methods.txt +++ b/DOCS/tech/swscaler_methods.txt @@ -13,7 +13,7 @@ blur acceptable: (fast)bilinear, area ok: others -aliassing (only downscale) +aliasing (only downscale) straight lines look like staircases areas of high detail look worse regular patterns turn into a funny looking mess (moire patterns) @@ -26,23 +26,23 @@ blocky (upscale only) bad: point ok: others -recommanditions: (based upon my personal oppinion many ppl might disagree ...) +recommendations: (based upon my personal opinion many ppl might disagree ...) --------------------------------------------------------------------- -the recomanded scalers for upscaling: +the recommended scalers for upscaling: fast_bilinear, point if speed is important cubic, spline, lanczos if quality is important -the recomanded scalers for downscaling: +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 blured input might look better after decoding than a slightly -sharpend one, especially for lower bitrates +then a slightly blurred input might look better after decoding than a slightly +sharpened one, especially for lower bitrates -sws numbers / names / artefact types +sws numbers / names / artifact types ------------------------------------------------------------------------- r ringing b blurry @@ -66,3 +66,4 @@ m mosaic (blocky) (upscale only) Notes: area upscale is identical to bilinear + |