smartiepants
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or in otherwords R2 on pal or R1 or R3 on ntsc which produces the best picture quality
Dr_Mike said:Nigel, when you say this effect is improved on better equipment, are you talking about really expensive stuff, or would a good prog-scan palyer fed into an LCD projector be alot better ? I'm asking specifically as these are what I'm planning to be getting soon.
nigel said:PAL has more horizontal lines so resolution is better
nigel said:I mean horizontal lines. TV signals are always made up of an array of horizontal lines. NTSC has 480 horizontal lines. PAL has 576 horizontal lines. You're right in that it is the vertical resolution that is dependent on the number of horizontal lines, though.
but head to head on picture quality NTSC is low resolution compared to pal
CKNA said:You are wrong. The lines you speak of are vertical. NTSC has 480 vertical lines and PAL has 576. Horizontal resolution per DVD spec is 720 for both but you never get that due to filtering, linearity of DAC's and other factors. On well mastered discs, it usually tops out at 540.
When listing resolution horizontal numbers are always listed first.
CKNA said:You are wrong. The lines you speak of are vertical. NTSC has 480 vertical lines and PAL has 576. Horizontal resolution per DVD spec is 720 for both but you never get that due to filtering, linearity of DAC's and other factors. On well mastered discs, it usually tops out at 540.
When listing resolution horizontal numbers are always listed first.
CKNA said:....Still the number 480 or 576 represent vertical resolution as Mr.D pointed out. That is all I was getting at......
nigel said:PAL has 576 horizontal lines. You're right in that it is the vertical resolution that is dependent on the number of horizontal lines
The amount of detail that can be displayed in the VERTICAL direction is determined by the number of ROWS (not COLUMNS) of data/pixels/scanlines whatever...........The 576 LINES in PAL are horizontal lines. The number of horizontal lines determines the vertical resolution........If a resolution is quoted as (eg) 720 x 576 it means 720 columns (vertical lines) and 576 rows (horizontal lines). .But it DOES mean horizontal resolution is 720, and vertical resolution is 576.......
CKNA said:PAL discs require extra space not because slightly more resolution, but because they are encoded at 25fps instead of 24fps.
Mr.D said:I don't even like referring to dvds as being PAL or NTSC but its become the norm .
Mr.D said:The actual number of frames on each type of disc will be the same. There might be some need to encode pal at a higher bitrate to allow for the increased bandwidth for 25fps but I doubt it : the playback speed is probably a function of the decoder rather than anything to do with the rate on the disc. However I don't know for sure so I'll refrain from confidently saying you are talking tosh which I strongly suspect.
I'd still say the only reason that PAL discs could require more space over their NTSC counterparts is resolution. I don't even like referring to dvds as being PAL or NTSC but its become the norm .