Hi Swiss
With regards the scrolling text being jerky. The smoothest I got using your colours/font size (about) and black border was with an .avi export at 60fps and a text image duration of 5 seconds or so.
The text was created without any scrolling at center bottom of the frame and previewed in VP to check it looked OK regarding colour/size etc. . I then took a snapshot of this to use in the video. This was then "scrolled" from right to left using the Position effect.
An mp4 export lat 60fps looked a bit "blurry" but an avi export a 60fps definitely looked smoother.
Your black frame appears between two shots. Either...
You have a gap between them if they are on the same track. Remedy is to go into Storyboard mode, find the gap and then close it. Or zoom into the timeline sufficiently to see the gap and then close it.
If the clips are on different tracks you have a gap between them . Remedy is to extend the lower track OR the upper track so they overlap. The gap should then be covered.
One clip or the other has a black frame at the end (or start). This may not necessarily be seen when you step frame by frame along the clip(s) . Remedy is to trim the end/start of the offending clip and then ensure there is no gap between them. I think there was a problem with earlier VP versions where this happened when the clip was split.If that is a similar case then trimming probably won't work. The only way to "remove" it in that case is to place the offending clip on a lower track and overlay the ends.
As an interesting test would might be open the project and place a blank clip on a lower track in a bright colour..eg yellow at the point you see the black flash. If it is a gap you will see a Yellow flash and you will know it is a gap and not a black frame.
Nat
