
Now you can set the frame rate you want and check the box where it says Use Frame
Rate. However in this case you have to make sure that the frame rate you ask for does
not exceed the possibilities of the camera with respect to the settings you adjusted.
You can use formulas (5), (6) and (7) to make sure that the frame rate you ask for is
possible. If not, then the frame rate you will get in practice will not be equal to the
frame rate you set.
9. Capture Æ Set Time Limit
You can type the seconds you want the camera to capture (time limit) and check the
box that says Use Time Limit. This will override, if necessary, the file size
restrictions set beforehand
10. Capture Æ Start Capture
When you click this, a notification window will appear asking you to click OK to
start capturing. The camera will capture for as long as you set on the Time Limit
settings. Otherwise it will keep capturing until you go again to Capture and then Stop
Capture. You can also stop the camera from capturing by clicking Esc.
11. Edit the captured video
When you are done with capturing the video, you save it and can then edit it and keep
only the frames you need. This can be done with video editing software such as
VirtualDub. An outline of using VirtualDub isI the following. First you have to import
the video and the software will split it out in frames. This way you can see the movie
frame by frame and cut out (delete) the frames that you don’t need. After doing that you
now have the video frames you want and have to save it as an .avi file. However since
you do not want to have very big files it is better if you first compress it. This you do by
choosing “audio” and make sure that the choice “No audio” is clicked. Then you go to
“Video” and you choose “Compression”. You choose from the list of CODECS which
compression you want. Microsoft MPEG-4 Video Codec V2 is what we used when
exporting the video clip for use in Coach 6.
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