Raspberry Pi camera board test

Plug the camera board into the slot which is the between HDMI and Ethernet port. Just exactly like in picture.

This is tested on 2017-03-02-raspbian-jessie-lite image
Make sure to launch raspi-config to enable on board camera

sudo raspi-config

Select Enable Camera

Enable

Press on the right side and select Finish

And apply reboot with Yes

To test and record the video with the default timing which is 5 seconds and then it quits.
h264 is just a file extension. Better leave it.

raspivid -o output.h264

To record for 10 seconds use

raspivid -o output.h264 -t 10000

For an vertical flip use -vf switch

raspivid -o filename.h264 -t 10000 -vf

For an horizontal flip use -hf switch

raspivid -o video.h264 -t 10000 -hf

To set another resolution use -w and -h switch

raspivid -w 1280 -h 720 -o hello.h264 -t 10000 -vf

P.S. You can play these files on windows with VLC media player