Video Standard refers to whether the video signal format is NTSC, PAL, or SECAM. Depending on the exact product version you have, you will see buttons for some or all of the following formats:
NTSC-M North America
NTSC-J Japan
PAL-B, D, G, H, I many countries in Europe and elsewhere. B, D, G, H, and I refer to five nearly identical subformats.
PAL-M Brazil
PAL-N, NC Argentina, Paraguay, Uruguay
SECAM France and some other countries
Full-sized NTSC-M, NTSC-J, and PAL-M have 525 lines total, 480 lines visible, per frame and a display rate of 60 fields per second, or 30 interlaced frames per second.
Full-sized PAL (other than PAL-M) and SECAM have 625 lines total, 576 lines visible, per frame and a display rate of 50 fields per second, or 25 interlaced frames per second.
The standard frame sizes are different for NTSC and PAL. For example, the half-frame size in pixels is 320x240 for NTSC, and 384x288 for PAL. If you have selected a standard frame size (Full, 1/2, 3/8, or 1/4), the driver will automatically adjust the frame size to correspond to the standard. If you have created a custom size, it does not change when you switch between NTSC and PAL/SECAM.
Changes to the signal controls do not take effect until you exit the dialog.