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greenmedic88 on 28 December 2009
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JamesCizuz said:
nordlead said:
Pock3R said:
Barozi said:
Andysw said:

Yes and no. The xbox 360 has a fancy upscaling function that upscales games to 1080p. It can not output native 1080p.

http://kotaku.com/201816/shane-kim-talks-360-1080p-game-output

Virtua Tennis 3 runs in native 1080p.

It's not possible to get native 1080p from a DVD....we wouldn't need bluray if we could

 

ok well i didnt read the article really....so what they are saying is the game was made on a hd disc for that old hd drive add on?? that article is tl;dr

 

now this is just complete garbage. 1080p has nothing to do with the medium it is stored on (DVD, Blu-Ray, HDD, USB Stick). Anyone who is posting any kind of information should know that.

That is true and false actually. Medium does matter with 320, 480, 720, and 1080 and higher resolution. Not due to the size of the medium but the size of the files. VCD, DVD, BD could all play ANY of those resolutions, but certain criteria have to be met. A 1080 signal requires a bitrate of atleast 72 Mbps(Mega Bits per second). Blu-ray has a bit rate of 36 Mbps, while a DVD has a bit rate of 10.5 Mbps, and CD of 1.2 Mbps.

Mbps = Mega bits per second.
MBps = Mega bytes per second(8 mega bites is a mega byte)
These are all at times 1 drives.

Now if 1080 content is 72 Mbps, that means you would need a 2x blueray drive, a 7x DVD drive, and a 60x CD drive.

Now most DVD players do have a 8x drive standard now, but when they first came out they were 2x, as 480 content was only between the 12-18 Mbps area. CD drive standard now is 52x. So older DVD players could not even stream the content, newer ones can.... Or can they?

Not only does the drive have to be a certain speed, but also has to be able to decode the information, PS3 could handle it, 360 could handle it, but what other devices could? Some BD players yeah, but you are still using a BD player. It has to do with how much power it takes to stream it as well. Some DVD players can get 720 content, but not 1080 native and some DVD players can upscale. Now the last problem comes down to storage. Now 1 second of 1080 content is 9 MEGABYTES. Now the 72 Mbps is a requirement, due to different ways it's stored and compressed etc, 72 Mbps is uncompressed fully audio/video. Now actual content for 1080 depending on how it's stored and what format it's in is between 30-50 Mbps, 50 being peak and 30 being low end. So many factors are in place it's rediculous.

Now sure, you can store 1080 content on a DVD, and CD, but you need a way to decode, stream, speed, and it's hugely limited by space. A DVD would hold around maybe 20 minutes of 1080 content in the way blu-ray standard format is, and a CD, around 4 minutes. You can say dual layer DVDs, great, 40 minutes, but now we have the problem that when you make more layers on a DVD the read speed is slower, while on a Blu-ray, no speed is lost with extra layers(till you hit 32 layers).

So yes you are right, the actual format could work on any medium HOWEVER wrong because of limitations.

You're going to make me burn a DVD to test this, but I'm pretty sure if I burn a 1920x1080 QT movie trailer to DVD, I'll still be able to get a normal frame rate if I play it off the DVD drive of any current computer.

On the second thought; no need. Unless I could burn a 1920x1080 movie file with lower compression in the range of 30-50Mbps+ bandwidth, I know it would play off DVD for example (1080p trailers online generally run around 10Mbps which for a 3:30m clip is about 256MB or about 14 minutes of video per GB of storage).

So it's not the resolution at all that anyone should be debating, only the bit rate. Lower bit rate, higher compression 1920x1080 signal will play back just fine on DVD. Is the quality the same as a 40Mbps AVC compressed A/V signal on BD? Of course not; nobody said that. But the point was a 1920x1080p signal can be stored (and played back) on just about any storage media, assuming the data bit rate doesn't exceed the format/drive.

Technically, Nord's right on the money.