Everytime I export instant replay clips into separate files, per clip, the file name is whacky. I took the time to write an identifying name for each clip and that name is the file name, but, the beginning of the file name has the date and a number included. How can I eliminate that date and number from the beginning of the file name so just the name I wrote becomes the file name?

From this:

20180615 - 5 - 1 Colby Wade - C- #17 [16-46-51] [16-46-56].mpg
20180615 - 12 - 1 Christian Hill - 3B, C, INF, UTL [16-58-01] [16-58-16].mpg
20180615 - 43 - 1 Tanner Hollingsworth - DH [20-30-20] [20-31-16].mpg

To this:

Colby Wade - C- #17 [16-46-51] [16-46-56].mpg
Christian Hill - 3B, C, INF, UTL [16-58-01] [16-58-16].mpg
Tanner Hollingsworth - DH [20-30-20] [20-31-16].mpg



ALSO, how to export into MP4 rather than mpg format?