Update: When I scrub the timeline, the window stays full, but as soon as I hit playback (at speed), it goes to the split screen. I cannot locate any settings for this behavior. Any help would be appreciated...
This sounds like a video driver issue. First thing that I would do would be to get the most recent video card driver and install it.
Now, in case I am wrong, please give us the full details of your source footage, your Project Preset and tell us more about your system, especially your video sub-system. The more details the better.
Also, can you post a screen-cap of this behavior?
I found the solution by changing my quality settings (in the top right hand corner of the program display window) from "Automatic Quality" to "Highest Quality".
I am not sure why it affects the display in this manner, but it just works this way and it is repeatable.
I am working with 50 Mb MXF files from a Sony PDW900 HD camera.I use the Mainstream codecs to inport the files. I am using a Nvidia Quadro CX as a video card with the latest drivers. I first thought that the Mainstream codecs were affecting the display somehow, but then again, I do not remember changing these display settings. Thanks for the suggestions, I appreciate the response just the same...
Interesting. I've heard of several other behaviors being solved by going either TO, or FROM Automatic Quality/Highest, but do not recall such a display issue.
Regardless, you got it sorted out, and now I have a suggestion, should I hear of that "split-screen" thing in the future - thanks for reporting.