实现对AVI视频的单帧截图，也可修改为按所需帧截图，截图可保存为BMP、JPEG等常见格式-AVI video to realize the single-frame shots, but also could be modified as necessary according to frame shots, screenshots can be saved as BMP, JPEG and other common formats
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001469s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.100067s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001425s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001366s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003647s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001123s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015006s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001662s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 180479 [ RunTime:0.001371s ]
