Canon PowerShot G10 User Manual page 231

229
The video output signal can be switched (NTSC or PAL) to
accommodate different regional standards (p. 61). The
default setting varies between regions.
- NTSC: Japan, U.S.A., Canada, Taiwan and others
- PAL: Europe, Asia (excluding Taiwan), Oceania and others
If the video system is set incorrectly, the camera output may
not display properly.