SUPERBIT ENCODING????

[GLADIATOR 2002]

The Superbit Collection will set a new benchmark in high resolution DVD image and sound, creating the ultimate in home entertainment. By reallocating data normally used for value-added content, Superbit DVDs can be encoded at double their normal bit rate while maintaining full compatibility with the DVD-Video format. The result is picture quality that provides outstanding detail. Superbit DVDs play on all DVD players. Currently DVDs are encoded to optimize space for the feature plus added value and audio streams. The SUPERBIT collection reallocates and converts the physical space ordinarily devoted to added value to higher bit rate video transfer and both Dolby Digital 5.1 & DTS audio.


Is this possible. I thought DVD(s) are already encoded at a set standard bitrate maintained by the industry. Besides that, Most DVD players are limited on playable bitrates are they not?

[Darkbird]

A normal dvd movie only has an average bitrate of 3.5Mbps to 5.0Mbps. Upper limit for dvd is 9.8Mbps without mult-angle, 8.0Mbps with multi-angle. Any dvd player will be able to play those rates, it is a part of the defined specs for the dvd format.

They could easily raise the average bitrate up to 7.0-7.5Mbps.

By the way, my Sony dvd player has the capability to display the bitrate as a dvd is playing. That is how I know.

[GLADIATOR 2002]

I see then. I do have a question then, if DVD players can see that type of data rate and play it. Why cant you just simply encode a mpeg1 or mpeg2/SVCD at 3mbps or 7mbps and play them on a DVD player?

[thxkid]

My toshiba 2050 show the bitrate for 2.5 to 10 and I see an range from 3.8 to 7.1 (peaks)when playing DVD's, but on the average it stays around 4.5 to 5, by the way it won't this feature on VCD's.

[shochan]

The reason why you can't play VCDs or SVCDs that high is because of the media and the spacing between the pits and the lands. The gap is bigger between them on a cd-r or rw than a dvd so it doesnt need higher than a 2 or 3x dvd drive in them if the bitrate is high than it needs to read faster. lets say a ring on a dvd holds 2sec of data and a vcd takes 5 rings for 2sec of data(both at same bitrate) then the drive has to spin faster to read all 5 of the rings on the vcd when it only had to read one on the dvd. Hince you need a faster drive. most come with 2x drives some with more.

<font size=-1>[ This Message was edited by: shochan on 2001-10-05 09:46:22 ]</font>