Has Anyone Ever Owned/Played DVD9s?

  • Thread starter Thread starter kyphysics
  • Start date Start date
AI Thread Summary
Most DVDs are DVD5s, which are single-layer discs, while DVD9s are less common and feature a double-layer format. There is uncertainty regarding whether DVD9s will play on standard DVD players, with conflicting information available online. Generally, if a DVD player supports DVD-2 or DVD-3 formats, it should also be able to read DVD-9s, but compatibility can depend on the age of the player and its specifications. It's important to check the player's compatibility with dual-layer DVDs. Additionally, region encoding may affect playback, as different regions (e.g., Region 1 for the US and Region 2 for Japan) can restrict the ability to play foreign DVDs.
kyphysics
Messages
684
Reaction score
445
Most DVDs are DVD5s. Some - less common are DVD9s.

I'm thinking of buying foreign language film that is a DVD9, but am not sure if it'd play on a normal DVD player.

I've seen conflicting answers online. Some say they can always be played on regular DVD players, while others say you have to put in in our computer drive to play it...

Figured people here were more reputable and I could get a closer-to-truth answer. Thanks in advance!
 
Computer science news on Phys.org
The difference is in the number of layers on the DVD. Single layer is lower cost, used by DVD-5, while double layer is used by DVD-9.
https://en.wikipedia.org/wiki/DVD#Capacity

I expect if your drive can handle DVD-2 or 3 it should be able to read DVD-9.
But there is always the question of how old is your DVD player, and what formats does it support. Look up the player specifications on the web.
 
I thought that dual layer DVDs were part of the format from the start and everything was required to play them. My PS2 had no problems with Dual layer DVD+R that held 8.5 GB

Perhaps you are thinking of region encoding? That is a different subject entirely. The US is region 1 and Japan is 2, I think? Region 5 would be Africa.
 
I have been idly browsing what Apple have to offer with their new iPhone17. There is mention of 'Vapour cooling' to deal with the heat generated. Would that be the same sort of idea that was used in 'Heat Pipes' where water evaporated at the processor end and liquid water was returned from the cool end and back along a wick. At the extreme high power end, Vapour Phase Cooling has been used in multi-kW RF transmitters where (pure) water was pumped to the Anode / or alternative Collector and...
Back
Top