If you can tell me what type and model of digital camera should i use for microstok video?

I think of camera that makes only video

I think of camera that makes only video

Have you looked in the shutterstock and istock video forums?  There are often people recommending video cameras there, I do have the Canon HV30 that has been good but that uses tape and most people don't want to use that anymore.

The DSL-R cameras have bigger sensors thus very good results toward noise issues. You might have a bad surprise if you take footage in the dark, like fireworks and such, with a camcorder. (friend experience with a 1100$ camcorder, trying to make stock during a firework event)

Yes i was thinking of a camcoder, but what resolution, type, hd....

To the best of my knowledge the frame rate is irrelevant. If you live in a country that broadcasts in PAL then the cameras on sale wil be PAL (25fps), and if you live in a contry that uses NTSC then the cameras will be NTSC (29.9fps). Although it might make a bit of a difference to overall sales of footage, most of it probably gets used on the web where the frame rate doesn't matter.

Hard drive cameras get a fair bit of criticism over their compression, but I have a Canon HG10 and have had footage accepted by Istock, Shutterstock, Fotolia and Pond5. I think in reality they are absolutely fine in good light situations. They do struggle with fast moving objects though.

Oh and go for HD1080. No point in going for anything less.

I am not interested in photography, i would rather go for video, but maybe i will buy compact dslr like pentax k x, or i will buy straight camcoder some sony handycam or something better

dslr cams have compression, most seem to use H.264/MPEG-4.  Some people wont use them but the clips look great to me.  It's the same with stills, perhaps some people pixel peep too much?  They will bring out raw video dslr's one day, perhaps the 5D MKIII ?  That would probably be overkill for microstock though, just imagine the file sizes.

Some people only use raw for timelapses, I use jpeg because I haven't sold enough to justify the extra hard drives to store all those big files.