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[cd]webp: document lack of animated webp support

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Bug: webp:479
Change-Id: Iee2d7401400a5ff0a11682028194e561b365ab78
This commit is contained in:
James Zern
2020-11-19 19:15:57 -08:00
parent 8870ba7f06
commit ab2d08a842
5 changed files with 11 additions and 4 deletions
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1
examples/cwebp.c
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@ -527,6 +527,7 @@ static void HelpLong(void) {
printf(" cwebp [-preset <...>] [options] in_file [-o out_file]\n\n");
printf("If input size (-s) for an image is not specified, it is\n"
"assumed to be a PNG, JPEG, TIFF or WebP file.\n");
printf("Note: Animated PNG and WebP files are not supported.\n");
#ifdef HAVE_WINCODEC_H
printf("Windows builds can take as input any of the files handled by WIC.\n");
#endif

3
examples/dwebp.c
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@ -76,7 +76,8 @@ static int SaveOutput(const WebPDecBuffer* const buffer,
static void Help(void) {
printf("Usage: dwebp in_file [options] [-o out_file]\n\n"
"Decodes the WebP image file to PNG format [Default]\n"
"Decodes the WebP image file to PNG format [Default].\n"
"Note: Animated WebP files are not supported.\n\n"
"Use following options to convert into alternate image formats:\n"
" -pam ......... save the raw RGBA samples as a color PAM\n"
" -ppm ......... save the raw RGB samples as a color PPM\n"