2004-07-29, 02:41
q. what does 4:2:2 mean ?
a. 4:2:2 is a video chroma format used by broadcasters for the best quality picture. normal transmissions are in 4:2:0. to view the 4:2:2 transmissions normally you would need a professional receiver costing thousands of pounds but with the advent of pci cards like the skystar 2 it is now possible to view these feeds for less than 65euro. all you need is a skystar 2 pci card for your pc , a dish connected to the card and pointed to the correct satellite and the software progdvb.exe which is available free from http://www.progdvb.com. it is also possible to view 4:2:2 using a nokia 9xxx series receiver connected to a pc via a scsi cable and running the software program dvbrecorder.
i took that off a soccer feed site. anyways i read that ppl can watch 4:2:2 feeds on there pc when to stream there dreambox to the pc, i've never done it myself but u probably know that program. i dont know what the pc does that the dreambox cant but whatever it is, it would cool to get it workin on the xbox.
just searched a bit in google, and i found these quotes from sat-industry:
first of all mpeg 4:2:2 isn't mpeg-4 but it's still mpeg-2 and 4:2:2 is a chroma format (4:2:0 is chroma format used for most dvb channels "visible" on actual commercial boxes)
live fullscreen vieweing of 4:2:2 comming out form dreambox is possible only on pc for today with dreamtv + tuxvision + trex <- all must be installed in system but on my machine ath2000xp cpu usage while decoding is very high 90-100% and picture is breaking badly propably because high bitrate of 4:2:2 transmissions (around 10mbit)
the 4.2.2 is supported first time in 1.07.4 firmware. it is not ideal. we see 1/3 of the screen and the rest in errors , but it is first step in dream's firmware.
i actually noticed that(the last quote) the other day, so hopefully the dreambox will do it itself then.
a. 4:2:2 is a video chroma format used by broadcasters for the best quality picture. normal transmissions are in 4:2:0. to view the 4:2:2 transmissions normally you would need a professional receiver costing thousands of pounds but with the advent of pci cards like the skystar 2 it is now possible to view these feeds for less than 65euro. all you need is a skystar 2 pci card for your pc , a dish connected to the card and pointed to the correct satellite and the software progdvb.exe which is available free from http://www.progdvb.com. it is also possible to view 4:2:2 using a nokia 9xxx series receiver connected to a pc via a scsi cable and running the software program dvbrecorder.
i took that off a soccer feed site. anyways i read that ppl can watch 4:2:2 feeds on there pc when to stream there dreambox to the pc, i've never done it myself but u probably know that program. i dont know what the pc does that the dreambox cant but whatever it is, it would cool to get it workin on the xbox.
just searched a bit in google, and i found these quotes from sat-industry:
first of all mpeg 4:2:2 isn't mpeg-4 but it's still mpeg-2 and 4:2:2 is a chroma format (4:2:0 is chroma format used for most dvb channels "visible" on actual commercial boxes)
live fullscreen vieweing of 4:2:2 comming out form dreambox is possible only on pc for today with dreamtv + tuxvision + trex <- all must be installed in system but on my machine ath2000xp cpu usage while decoding is very high 90-100% and picture is breaking badly propably because high bitrate of 4:2:2 transmissions (around 10mbit)
the 4.2.2 is supported first time in 1.07.4 firmware. it is not ideal. we see 1/3 of the screen and the rest in errors , but it is first step in dream's firmware.
i actually noticed that(the last quote) the other day, so hopefully the dreambox will do it itself then.
