Size

The formats related to 625-line systems with a 50 Hz field rate
sampling matrix       actual active picture size supports
interlacing
notes
width height width height
768 576       767 576 Y "Industry standard" 625/50 square-pixel video
768 576       768 576 Y "True" computer square-pixel resolution
768 560       767 576 Y CD-i
720 576       702 576 Y D1, DV, DVB, DVD, SVCD
720 540       720 540 N Oddball compromise format. Better to avoid unless you really know what you are doing.
704 576       702 576 Y DVD, H.263 (4CIF), VCD
702 576       702 576 Y Active picture frame for 625/50 systems in ITU-R BT.601-4 pixels.
544 576       526+1/2 576 Y DVB (3/4 of BT.601 sampling rate)
480 576       468 576 Y SVCD (2/3 of BT.601 sampling rate)
384 288       383+1/2 288 N 1/4 of "industry standard" 768576
384 280       383+1/2 288 N CD-i
352 576       351 576 Y DVD
352 288       351 288 N VCD, DVD, H.261 + H.263 (CIF)
176 144       175+1/2 144 N H.261 + H.263 (QCIF)
The formats related to 525-line systems with a 59.94 Hz field rate
sampling matrix       actual active picture size supports
interlacing
notes
width height width height
720 540       720 540 N Oddball compromise format. Better to avoid unless you really know what you are doing.
720 486       710.85 486 Y D1
720 480       710.85 486 Y DV, DVB, DVD, SVCD
711 486       710.85 486 Y Active picture frame for 525/59.94 systems in ITU-R BT.601-4 pixels.
704 486       710.85 486 Y  
704 480       710.85 486 Y ATSC, DVD, VCD
648 486       648 486 Y "True" computer square-pixel resolution (all 486 active scanlines)
640 480       646+5/22 486 Y D2: "industry standard" 525/59.94 square-pixel video
640 480       648 486 Y "True" computer square-pixel format (cropped)
480 480       473.9 486 Y SVCD (2/3 of BT.601 sampling rate)
352 480       355.425 486 Y DVD
352 240       355.425 243 N VCD, DVD
320 240       324 243 N 1/4 of 640480
59.94 Hz is only a conventional approximation; the mathematically exact field rate is 60 Hz * 1000/1001.
A calculated sampling rate, represented here only for completeness. Does not exist in actual 525/625 video equipment.
Only used for still images.

Source : <http://www.iki.fi/znark/video/conversion/>.