Just Curious - Blu-ray Forum

sarnell2 · 11-13-2007, 03:44 AM

Standard Definition in North America (NTSC) consists of 525 vertical lines of resolution (interlaced). DVD's contain 480 vertical lines of resolution (interlaced or progressive depending on your DVD player / TV). Doesn't that seem a little strange that DVD's actually have 45 less lines than regular cable TV? Am I not understanding this correctly?

olarmy96 · 11-13-2007, 03:47 AM

Not all 525 lines are visible. Only about 480 are. See

http://en.wikipedia.org/wiki/NTSC

Quote:

Originally Posted by sarnell2

Standard Definition in North America (NTSC) consists of 525 vertical lines of resolution (interlaced). DVD's contain 480 vertical lines of resolution (interlaced or progressive depending on your DVD player / TV). Doesn't that seem a little strange that DVD's actually have 45 less lines than regular cable TV? Am I not understanding this correctly?

sarnell2 · 11-13-2007, 03:55 AM

Quote:

Originally Posted by olarmy96

Not all 525 lines are visible. Only about 480 are. See

http://en.wikipedia.org/wiki/NTSC

Good point, but it still says 486 are visible...which is more than a DVD

GTsmokeya · 11-13-2007, 05:38 AM

But by the time cable is compressed and passed through old and really low grade cables the image that reaches most tv's is not better looking than cable tv. Thats why people generally say dvd's using basic composite cables look better than cable tv.

GTsmokeya

11-13-2007, 03:44 AM	#1
sarnell2 Active Member Member since:Jun 2007	Just Curious Standard Definition in North America (NTSC) consists of 525 vertical lines of resolution (interlaced). DVD's contain 480 vertical lines of resolution (interlaced or progressive depending on your DVD player / TV). Doesn't that seem a little strange that DVD's actually have 45 less lines than regular cable TV? Am I not understanding this correctly?

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11-13-2007, 05:38 AM	#4
GTsmokeya Active Member Member since:Aug 2007	But by the time cable is compressed and passed through old and really low grade cables the image that reaches most tv's is not better looking than cable tv. Thats why people generally say dvd's using basic composite cables look better than cable tv. GTsmokeya

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