Video too big

hello

I use the latest version of CamStudio but I can not get a video with an acceptable weight. Indeed, I only happen to have videos of 200MB or more for just 1 minute.

I have try to use 3 codec :

Jawor's Xvid compressor/codec -
http://www.digital-digest.com/software/download.php?sid=1052&ssid=0&did=14

X.264vfw compressor/codec -
http://sourceforge.net/projects/x264vfw/

CamStudio Lossless Codec 1.5
http://www.free-codecs.com/CamStudio_Lossless_Codec_download.htm

I know that the top 2 are the best but they no work ...

Jawor's Xvid compressor/codec :
The video has a nice weight but unfortunately when I film something moving, once the video is recorded it is very jerky and it gives a headache. Lack of fluidity.

X.264vfw compressor/codec :
The beginning and end are not recorded.

CamStudio Lossless Codec 1.5
The video is much too large. I get about 2 Mo (16 Mb) for 1 minute. It is too much ...

Can you help me configure CamStudio and select the right codec?

Thank you in advance for your help.