MPEG-2 4:2:0 (PAL)/4:2:2 help

I

iwol

Regular Member
My Satellite Setup
channel master 1.2m dish
technomate 6900,,and invacom 0.3 quad lnb
satlook micro
My Location
yorkshire
hi could anyone tell me the difference between MPEG-2 4:2:0 (PAL) and MPEG-2 4:2:0 on a feed as i can watch MPEG-2 4:2:0 (PAL) but not MPEG-2 4:2:0
thanks in advance
 
MPEG2 4:2:0 is the compression system used in a domestic STB. Whether the video is encoded in PAL or another system (NTSC etc.) has no bearing on the type of MPEG2 transmitted. The one you can't receive may be NTSC.

Llew
 
thanks llew but is there any way of encoding the ntsc version
 
You should be able to resolve NTSC on your TV if it has NTSC/PAL switching. Maybe the feed is encrypted in something like Powervu (although this is not generally used for feeds). What satellite/transponder are you looking at?

Llew
 
hi can anyone please help,just started looking at feeds and when they are MPEG-2 4:2:0 (PAL) i get a clear picture but when they are MPEG-2 4:2:2 they look encrypted,can anyone throw any light on this problem or is it possible to get this format with a clear picture thanks in advance
 
iwol said:
hi can anyone please help,just started looking at feeds and when they are MPEG-2 4:2:0 (PAL) i get a clear picture but when they are MPEG-2 4:2:2 they look encrypted,can anyone throw any light on this problem or is it possible to get this format with a clear picture thanks in advance
Click to expand...

You haven't answered Llew's question from 3 weeks ago regarding the same issue
http://www.satellites.co.uk/php-bin/forum/showthread.php?t=37985&highlight=MPEG-2+4%3A2%3A0

People will try to help if you give them the info to allow them to help

[ Hi topper - think I've managed to lace the two together now ]

L. :)
 
iwol said:
hi can anyone please help,just started looking at feeds and when they are MPEG-2 4:2:0 (PAL) i get a clear picture but when they are MPEG-2 4:2:2 they look encrypted,can anyone throw any light on this problem or is it possible to get this format with a clear picture thanks in advance
Click to expand...

I think most receives for domestic use suppport 4:2:0 (ie Main profile @main Level). 4:2:2 is for broadcasters use where video is of higher quality and used for contribution links ( where broadcasters need to edit video after receiving)

if youre receiver supports 4:2:2 profile @main level it will decode both formats
 
sorry i actually meant mpeg2 4:2:2
 
thanx for reply but how do i know if my receiver supports 4:2:2,its a technomate 5500
 
No, none of the current domestic STB's can resolve MPEG 4:2:2.,
although tests with the Quali-TV QS 1080R HDTV STB have found it possible to clear feeds broadcast in 4:2:2.
Don't know the price of this box, and it doesn't have Diseqc motor control or CI slots, so it is a bit limited otherwise.

See h**p://www.dvdlibrary.co.uk/qualitv%20qs1080.htm

for details if you're interested.

Llew
 
thanx llew to end thread its not possible without spending loads £499 at brymar.thanks for your input
 
Just a PS -

thought that the PCI cards could do that fairly easiiy .

Anyone ??
 
do you have a pci card lancelot
 
iwol said:
do you have a pci card lancelot
Click to expand...


A skystar 1 or 2 card does 4.2.2. with very good results using PROGDVB amongst other software. You can find them for about 50 pound or cheaper on auction sites.
 
Skystar2 rocks the STB world to it's foundations for under £50 once more... :D


If you don't have one of these babies, then WHY NOT?!?!?! O-Ha
 
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