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Update Usage.md
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Joe Drago committed Feb 14, 2020
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Expand Up @@ -37,18 +37,21 @@ Output Format Options:
-q,--quality QUALITY : Output quality for supported output formats. (default: 90)
-r,--rate RATE : Output rate for for supported output formats. If 0, codec uses -q value above instead. (default: 0)
-t,--tonemap TM : Set tonemapping. auto (default), on, or off. Tune with optional comma separated vals: contrast=1.0,clip=1.0,speed=1.0,power=1.0
--yuv YUVFORMAT : Choose yuv output format for supported formats. auto (default), 444, 422, 420, yv12
--yuv YUVFORMAT : Choose yuv output format for supported formats. 444 (default), 422, 420, yv12
--quantizer MIN,MAX : Choose min and max quantizer values directly instead of using -q (AVIF only, 0-63 range, 0,0 is lossless)
--tiling ROWS,COLS : Enable tiling when encoding (AVIF only, 0-6 range, log2 based. Enables 2^ROWS rows and/or 2^COLS cols)
--codec READ,WRITE : Specify which internal codec to be used when decoding (AVIF only, auto,auto is default, see libavif version below for choices)
--speed SPEED : Specify the quality/speed tradeoff when encoding (AVIF only, [0-10] range. auto = default (let the codec decide), 0=best quality, 10=fastest)
Convert Options:
--resize w,h,filter : Resize dst image to WxH. Use optional filter (auto (default), box, triangle, cubic, catmullrom, mitchell, nearest)
--rotate cwTurns : Rotate image cwTurns clockwise
-z,--rect,--crop x,y,w,h : Crop source image to rect (before conversion). x,y,w,h
--composite FILENAME : Composite FILENAME on top of input. Must be identical dimensions to input.
--composite-gamma GAMMA : When compositing, perform sourceover blend using this gamma (default: 2.2)
--composite-premultiplied: When compositing, assume composite image's alpha is premultiplied (default: false)
--composite-tonemap TM : When compositing, determines if composite image is tonemapped before blend. auto (default), on, or off
--composite-offset x,y : When compositing, offsets source image onto destination image
--hald FILENAME : Image containing valid Hald CLUT to be used after color conversion
--stats : Enable post-conversion stats (MSE, PSNR, etc)
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