Fatal flaw with VideoPad's version 7.01.
Let's say you have this clip with the In point at 10:00, and the Out point at 11:00.
Then you change the clip speed to 500%. The In point should now be at 2:00, and the Out point is now at 2:12.
And... that's all that happens. Changing the speed of the clip literally just shifts the In and Out points to another position inside of the same clip that's at 100% speed, but it doesn't actually CHANGE THE SPEED of the clip. On the preview, you will see a completely different part of the clip instead.
I open the Speed Change dialog again, and the speed appears to be 500%, but the duration appears to have been sped up to 500% again (as if the resulting twelve seconds was sped up 500% again, thus showing "2.400"). Yeah, I don't know what that's all about, but it's really weird.
I might have to go back to 7.00 until this gets fixed.