Cropping
The source image is always cropped horizontally to retain 704 pixels per line, for both 525-line and 625-line television systems. The cropped area is centered on the digital active area. Eight pixels are cropped at both and right sides.
Cropping
625-line television system
Cropping
525-line television system
The cropped area is:
- 704 (H) x 576 (V) for 625-line television system
- 704 (H) x 480 (V) for 525-line television system
For 625-line system:
- The cropped area still contains some blank pixels at both left and right sides, typically 1 pixel wide in case of a nominal analog video signal.
- The cropped area still contains some blank pixels at both top and bottom sides, typically 1/2 line at left side of topmost line, 1/2 line at right side of bottommost line in case of a nominal analog video signal.
For 525-line system:
- There are no blank pixels at left and right sides of the cropped area, assuming a nominal analog video signal.
- There are no blank half-lines at top and bottom sides of the cropped area, assuming a nominal analog video signal.