can you get on a 4gb sd card? Are there any data that talk about this?

Tom
D5000IR, V1, Oly OM-D E-M5
Nikkor Zooms: AF-S 18-105 f/3.5-5.6 VR, VR, AF-S 18-135 f/3.5-5.6
Nikkor primes: 24 f/2.8Ai-S, 28 f/2.8D, Micro 60 f/2.8, 85 f/1.4D, Nikkor-C 500 f/8 Refl.
Nikon 1 lenses: 10mm f/2.8, 10-30mm f/3.5-5.6 VR, 30-110mm f/3.8-5.6.
Voigtlander 58mm f/1.4, Sigma 70-300 Macro f/3.5-5.6.
Oly 12-42mm f/3.5-5.6, 12-50mm f/3.5-6.3, 12mm f/2.0, 45mm f/1.8, 75mm f/1.8.
Lumix 20mm f/1.7, 14-140mm f/4.0-5.8, 100-300mm f/4.0-5.6
Gitzo GT3541L, Manfrotto MT293A4, MP 680B
Markins M-20, RRS BH-25 Pro

Hi Tom,

The maximum length of a video is determined by the format that the video is captured in more than the size of the memory card. In no case is the time very long.
If you refer to the D5000 Useres Manual available at the following link in pdf format it will list the maximum video time for each format: http://support.nikontech.com/app/answers/detail/a_id/13948
My pdf copy of the manual is on my other computer which I am away from or I would be more specific.
Good Luck and Enjoy your Nikons!

Best Regards,
Marty