Track an object that rotates 90 degrees

I am running a test for a project and I need to track a blue card for replacement in after effects. The card rotates 90 degrees: It starts by my side and I pick it up and hold it in front of my face. After importing the clip, I start at the end and create a four point x-spline around the card and a four point x-spline within the hole. Then I set several keyframes by rotating/moving the x-splines during critical points in the clip. When I track backwards from the end, about halfway through the main motion it loses perspective (even though I have good keyframes I put in myself)… How can I fix this?
Here is a link to the clip (http://www.trinitifx.com/wip/MVI_9838.MOV)(50meg h264 quicktime)

You can increase the Min % of pixels used and also turn the rotation value up (both in track tab). Beyond this, I would add some blue tape (track marks) to the card and re-shoot if possible. mocha wants to see some texture or pixel pattern to grab on to.

Hope this helps.

—Quote (Originally by 3DPiper)—
I am running a test for a project and I need to track a blue card for replacement in after effects. The card rotates 90 degrees: It starts by my side and I pick it up and hold it in front of my face. After importing the clip, I start at the end and create a four point x-spline around the card and a four point x-spline within the hole. Then I set several keyframes by rotating/moving the x-splines during critical points in the clip. When I track backwards from the end, about halfway through the main motion it loses perspective (even though I have good keyframes I put in myself)… How can I fix this?
Here is a link to the clip (http://www.trinitifx.com/wip/MVI_9838.MOV)(50meg h264 quicktime)
—End Quote—