Have a big problem try to upload 55 mb movie

I get the here

Return value: Video stream: 2491.927 kbit/s (311490 B/s) size: 49498523 bytes 158.908 secs 9525 frames

ERROR: Unable to execute query

SELECT * FROM `config` WHERE `config_name`='enable_flvtool'
MySQL server has gone away

Pls don't tell me my server is timed out for has sat to 400000

small video are just fine

http://video.ffow.dk/phpinfo.php