MPlayer源附带一个名为midentify的示例脚本,如下所示:
#!/bin/sh # # This is a wrapper around the -identify functionality. # It is supposed to escape the output properly,so it can be easily # used in shellscripts by 'eval'ing the output of this script. # # Written by Tobias Diedrich <ranma+mplayer@tdiedrich.de> # Licensed under GNU GPL. if [ -z "$1" ]; then echo "Usage: midentify.sh <file> [<file> ...]" exit 1 fi mplayer -vo null -ao null -frames 0 -identify "$@" 2>/dev/null | sed -ne '/^ID_/ { s/[]()|&;<>`'"'"'\\!$" []/\\&/g;p }'
-frames 0使mplayer立即退出,-vo null -ao null阻止它尝试打开任何视频或音频设备.这些选项都记录在man mplayer中.
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