So the problem seems to be in the script (viewtopic.php?f=4&t=2684&p=13685)

From my host support: "Issue is still present, however, small videos appear to convert and insert into mysql without errors. Appears that vShare opens a mysql connection at the time of the conversion process and keeps the connection open for the entire period. Once the video is converted it tries to use this open mysql connection to insert the link /data for the video to the database but connection has been terminated by one of the timeout variables. Typical timeout variable should have value of 30-180 seconds in some cases it can be more. Since some of your videos convert in 15-20min in order to overcome this limitation of vShare we will have to up all timeout variables to exceed the time for which the videos are converting. This will cause system instability if some connections are not terminated naturally by the scripts and keep incrementing till reaching the timeout period"

Any idea what to do?