Why...

[Skii]

..is there a little pause halfway through a DVD movie ?

just wondering tbh

[Twigman]

when i changes layers?
DVDs are like CDs, but two layers, so when they have to change layers there can be a short pause. Is this what you mean?

[Skii]

Originally posted by Twigman
when i changes layers?
DVDs are like CDs, but two layers, so when they have to change layers there can be a short pause. Is this what you mean?

Yeah I think so, its like a tiny freeze for a split second, normally aout 40-50 minutes into a film.

[Aaron]

Yup, it's when the DVD player is changing between layers. The length of the pause depends on the DVD and the DVD player.

Some DVDs but the pause inbetween scenes but some have them right in the middle of someone speaking or in the middle of the some action.

[Zak33]

as above dude....the laser "re focuses" on the next depth of info...

some older disks you had to TURN OVER, which kinda killed any tension at critical moments...so now they are one sided, multi layer

Cleverer than I have explained it though....all that info a billionth of a millimetre deeper

[Jonny M]

Does it get to that point and then start reading in then? As opposed to reading from the centre out on the first layer?

Yer it's really daft putting a layer change in the middle of someone talking. My Pioneer DV-U7 seems pretty good at coping with layer changes.

[5lab]

yeah annoys me that does - amp stops being dd or dts for a second then pops when it kicks back in. grr. need a player with a bigger buffer

[Zak33]

Originally posted by Caged
Does it get to that point and then start reading in then? As opposed to reading from the centre out on the first layer?

now THAT is a truly ace question.....and I have NO IDEA AT ALL

Disks read from centre to out side...so when it re-focuses does it have to shoot back to the inside for the next layer?

Blimey......what a cool question...

ANYONE KNOW ?

[Jonny M]

I think due to the short pause that it would start reading back into the centre, so the start and end of the films are at the middle of the disc.

Open your DVD player and see what happens

Players could do with a 10 second memory or something so there is no pause.

[Knoxville]

Some players do have memory similar to that in anti shock cd players to cope with the change, they're few and far between though

[Howard]

Mine I rarely notice changing layers.
The only time I notice it is on the Star Wars Ep2 Disc

[5lab]

the audio and video tracks on a dvd are NOT afaik interlaced. thats to say, they are on seperate files on the disk. hence how multiple languages/angles and other features (such as subtitles) work. therefor the laser is alwasy shooting in and out finding the right bit of sound for the bit of video its showing... i think they always read from the inside-> out, and the small delay is the time the player takes to whisk the laser to the other edge of the disk, minus the buffer time. you may think this is a little fast (as you've probably whipped the cd out of a ps1 or personal stereo before, and watched the laser return) but i think dvd laser motors are faster. not 100% sure thou

more modern disks take this into consideration, and the cut is now often between scenes, so it doesnt notice as much (it used to be just anywhere at random, ie middle of a fight scene).

[Skii]

Kewl

thans for the explanation you bright lot

[unrealrocks]

5lab is right - ALL standard disks read in to out ... its not possible the other way with standard players AFAIK!

Audio players etc. have very slow motors on the laser as they don't need to move quickly although newer CDRoms and DVDs can move from one end to the other in a fraction of a second with barley any noise (less than the disk spinning) so you don't notice!