Video frame rate change from video to video

HI all ,
when I use labview 2013 I found some strange in acquiring avi video
 when I acquire video from my computer the fps change from video to another one
some video fps reach 800 fps and other reach 180 fps what is the problem 

A lower frame rate is actually expected behavior if you are playing video through LabVIEW. This KB explains that LabVIEW analyzes the video one frame at a time and keeps it in the system memory on the CPU.  This can result in slower frame rates during playback. If you would like to simply view video through your front panel, it may be a good idea to embed Windows Media Player in the VI through an ActiveX control.
-Erik S
Applications Engineer
National Instruments

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    4. When I finally figured out that the footage from the SDX900 used a 3:2 pulldown, I opened the captured clips in Cinema Tools and attempted to remove the pulldown. The problem I ran into there was that CT can't handle files larger than 9 GB. Each captured clip (four of them—one for each tape) ranged between 10 and 13 GB.
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