My Screen Recorder captures screen videos in the same resolution as that of your monitor. The typical screen resolution is 1024 x 768 pixels or higher. Perimer Pro can not edit videos with such a high resolution. When you add a high resolution screen recorded video, Permier Pro resizes it to a smaller resolution that results in blurry fonts.
In My Screen Recorder Pro, you can use the Conversion Wizard to correctly resize screen recorded videos to a lower resolution without causing font from blurring. You can then use this resized video in Premier Pro.
As an alternative, you can choose to record a smaller region instead of the entire desktop. If you must capture the entire desktop then you can also try DeskShare's Video Edit Magic for editing screen-recorded videos. For details, visit:
http://www.deskshare.com/vem.aspx
DeskShare - Support