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57883c78ed
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57883c78ed | ||
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1c8eba978b |
@ -321,10 +321,13 @@ Per-frame options (only used for subsequent images input):
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```
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```
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-d <int> ............. frame duration in ms (default: 100)
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-d <int> ............. frame duration in ms (default: 100)
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-lossless ........... use lossless mode (default)
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-lossless ............ use lossless mode (default)
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-lossy ... ........... use lossy mode
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-lossy ............... use lossy mode
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-q <float> ........... quality
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-q <float> ........... quality
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-m <int> ............. method to use
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-m <int> ............. method to use
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-exact, -noexact ..... preserve or alter RGB values in transparent area
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(default: -noexact, may cause artifacts
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with lossy animations)
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```
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```
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example: `img2webp -loop 2 in0.png -lossy in1.jpg -d 80 in2.tiff -o out.webp`
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example: `img2webp -loop 2 in0.png -lossy in1.jpg -d 80 in2.tiff -o out.webp`
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@ -59,10 +59,14 @@ static void Help(void) {
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printf("Per-frame options (only used for subsequent images input):\n");
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printf("Per-frame options (only used for subsequent images input):\n");
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printf(" -d <int> ............. frame duration in ms (default: 100)\n");
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printf(" -d <int> ............. frame duration in ms (default: 100)\n");
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printf(" -lossless ........... use lossless mode (default)\n");
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printf(" -lossless ............ use lossless mode (default)\n");
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printf(" -lossy ... ........... use lossy mode\n");
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printf(" -lossy ............... use lossy mode\n");
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printf(" -q <float> ........... quality\n");
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printf(" -q <float> ........... quality\n");
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printf(" -m <int> ............. method to use\n");
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printf(" -m <int> ............. method to use\n");
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printf(" -exact, -noexact ..... preserve or alter RGB values in transparent "
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"area\n"
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" (default: -noexact, may cause artifacts\n"
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" with lossy animations)\n");
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printf("\n");
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printf("\n");
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printf("example: img2webp -loop 2 in0.png -lossy in1.jpg\n"
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printf("example: img2webp -loop 2 in0.png -lossy in1.jpg\n"
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@ -248,6 +252,10 @@ int main(int argc, const char* argv[]) {
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fprintf(stderr, "Invalid negative duration (%d)\n", duration);
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fprintf(stderr, "Invalid negative duration (%d)\n", duration);
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parse_error = 1;
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parse_error = 1;
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}
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}
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} else if (!strcmp(argv[c], "-exact")) {
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config.exact = 1;
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} else if (!strcmp(argv[c], "-noexact")) {
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config.exact = 0;
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} else {
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} else {
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parse_error = 1; // shouldn't be here.
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parse_error = 1; // shouldn't be here.
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fprintf(stderr, "Unknown option [%s]\n", argv[c]);
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fprintf(stderr, "Unknown option [%s]\n", argv[c]);
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@ -1,5 +1,5 @@
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.\" Hey, EMACS: -*- nroff -*-
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.\" Hey, EMACS: -*- nroff -*-
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.TH IMG2WEBP 1 "July 18, 2024"
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.TH IMG2WEBP 1 "September 3, 2024"
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.SH NAME
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.SH NAME
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img2webp \- create animated WebP file from a sequence of input images.
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img2webp \- create animated WebP file from a sequence of input images.
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.SH SYNOPSIS
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.SH SYNOPSIS
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@ -88,6 +88,11 @@ Specify the compression factor between 0 and 100. The default is 75.
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Specify the compression method to use. This parameter controls the
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Specify the compression method to use. This parameter controls the
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trade off between encoding speed and the compressed file size and quality.
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trade off between encoding speed and the compressed file size and quality.
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Possible values range from 0 to 6. Default value is 4.
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Possible values range from 0 to 6. Default value is 4.
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.TP
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.B \-exact, \-noexact
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Preserve or alter RGB values in transparent area. The default is
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\fB-noexact\fP, to help compressibility. Note \fB\-noexact\fP may cause
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artifacts in frames compressed with \fB\-lossy\fP.
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.SH EXIT STATUS
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.SH EXIT STATUS
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If there were no problems during execution, \fBimg2webp\fP exits with the value
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If there were no problems during execution, \fBimg2webp\fP exits with the value
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