- 追加された行はこの色です。
- 削除された行はこの色です。
- FFmpeg/Swscale へ行く。
- What is lib Swscale used for by ffmpeg programers?
-- http://stackoverflow.com/questions/3367187/what-is-lib-swscale-used-for-by-ffmpeg-programers
- Swscale is mainly used for players, not encoding/decoding
- at a different pixel size/aspect ratio, colorspace conversion between various RGB and YUV color formats
- no faster software implementation presently exists for any of them, at least on x86 and x86_64