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man/cwebp.1: clarify -pass > 1 behavior w/o -size/-psnr

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A PSNR value of 40dB will be used in this case.

Bug: webp:635
Change-Id: I74964a08a1f0a6b92ecfa482753a171ce6f3ae18
This commit is contained in:
James Zern 2024-03-14 19:34:39 -07:00
parent eba03acb05
commit 1bf46358c4
1 changed files with 4 additions and 2 deletions
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man/cwebp.1
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@ -1,5 +1,5 @@
.\" Hey, EMACS: -*- nroff -*-
.TH CWEBP 1 "March 17, 2022"
.TH CWEBP 1 "March 14, 2024"
.SH NAME
cwebp \- compress an image file to a WebP file
.SH SYNOPSIS
@ -135,7 +135,9 @@ are used, \fB\-size\fP value will prevail.
Set a maximum number of passes to use during the dichotomy used by
options \fB\-size\fP or \fB\-psnr\fP. Maximum value is 10, default is 1.
If options \fB\-size\fP or \fB\-psnr\fP were used, but \fB\-pass\fP wasn't
specified, a default value of '6' passes will be used.
specified, a default value of '6' passes will be used. If \fB\-pass\fP is
specified, but neither \fB-size\fP nor \fB-psnr\fP are, a target PSNR of 40dB
will be used.
.TP
.BI \-qrange " int int
Specifies the permissible interval for the quality factor. This is particularly