Setting cron to only add 2 vids a day

Considering the cron.php is encrypted i cant see the code. Maybe someone here knows...

I want to upload say 20 videos and set cron to only convert 2 videos a day that way its always updating automatically.

Heres an example;

5 * * * * /usr/bin/php /usr/local/apache/sites/YOURSITE.com/htdocs/cron.php --only_convert_2--

Im only guessing here about --only_convert_2--


Anyone got any ideas??

why not just set the cron to run every 12 hours instead of every 5 minutes?