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ffmpeg: document alternative to the lossless libx264 presets 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-09-26 22:02:13 +02:00
parent a96b171d6c
commit eb11cca530
1 changed files with 4 additions and 1 deletions
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ffmpeg.c
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@ -4107,7 +4107,10 @@ static int opt_preset(OptionsContext *o, const char *opt, const char *arg)
subtitle_codec_name;
if (!(f = get_preset_file(filename, sizeof(filename), arg, *opt == 'f', codec_name))) {
fprintf(stderr, "File for preset '%s' not found\n", arg);
if(!strncmp(arg, "libx264-lossless", strlen("libx264-lossless"))){
fprintf(stderr, "Please use -preset <speed> -qp 0\n");
}else
fprintf(stderr, "File for preset '%s' not found\n", arg);
exit_program(1);
}