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this is very beginner's question, i am asking this before buying my first DSLR. I just like to know what is the video size for Nikon D5100 in both 720px, 1080px videos.
i heard that it's 4GB for 10min. is that true?
and how to convert them in small size?

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closed as off topic by Jay Lance Photography, mattdm, Itai, ahockley, rfusca May 5 '11 at 19:11

Questions on Photography Stack Exchange are expected to relate to photography within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

Can you clarify the last part about converting in small size? I'm afraid I don't understand. – mattdm May 5 '11 at 10:29
i mean compress the video in small size, with may be some third party tool. like 4Gb video to 500Mb. – subeer haldar May 5 '11 at 10:36
I see — thanks. This is really off-topic here, where we deal with still photography. Questions about video mode as a feature of dSLR cameras are a gray area, but this question is really mostly about video. There's a proposal for a new Stack Exchange site dealing with film and video production — you may be interested in that. See… – mattdm May 5 '11 at 11:30
thank you for your kind response.. – subeer haldar May 5 '11 at 11:48
You can get some ideas of the quality settings the files use from page 109 of the manual (…), which should help you some, although the answer will vary according to the contents of the video, because some things compress better than others. – mattdm May 5 '11 at 11:50