Are Blu-ray Discs 1080p On The Disc?

[AVDrummer]

I'm curious. I've read on the internet that Blu-Ray discs are 1080p. I thought that the Progressive Scan had to do with your display. (Example: An SD DVD is 480i, until you turn on the Progressive Scan output on your DVD player, and you must have a TV that can display a Progressive image.) So is a Blu-Ray disc 1080i on the disc until you display it on a Progressive Scan display? Or are the movies encoded on the disc at 1080p? Does it depend on the video encoding format? Are Interlaced and Progressive somehow different for Blu-Ray?

[J6P]

Originally Posted by AVDrummer

I'm curious. I've read on the internet that Blu-Ray discs are 1080p. I thought that the Progressive Scan had to do with your display. (Example: An SD DVD is 480i, until you turn on the Progressive Scan output on your DVD player, and you must have a TV that can display a Progressive image.) So is a Blu-Ray disc 1080i on the disc until you display it on a Progressive Scan display? Or are the movies encoded on the disc at 1080p? Does it depend on the video encoding format? Are Interlaced and Progressive somehow different for Blu-Ray?

All DVDs are encoded at 480i. You are correct; with DVD you needed both a Progressive Scan DVD player and Progressive Scan-capable display. If you had both, the interlaced signal was reinterlieved before playback.

Blu-ray, however, is a fully progressive source all the way down the chain. Every Blu-ray disc (save for a tiny handfull of 1080i releases) contains a full 1080 lines of information for every rendering pass.

[fighthefutureofhd]

Originally Posted by J6P

All DVDs are encoded at 480i. You are correct; with DVD you needed both a Progressive Scan DVD player and Progressive Scan-capable display. If you had both, the interlaced signal was reinterlieved before playback.

Blu-ray, however, is a fully progressive source all the way down the chain. Every Blu-ray disc (save for a tiny handfull of 1080i releases) contains a full 1080 lines of information for every rendering pass.

how do you know if you have a progressive scan capable display/television? and what kind of television can do the progressive scan?

[kpkelley]

Originally Posted by fighthefutureofhd

how do you know if you have a progressive scan capable display/television? and what kind of television can do the progressive scan?

Check your manual. If it says native resolution of 1920X1080 or accepts 1080P signals and down converts them to 1080i/720P, then it is capable of accepting 1080p video.

[fighthefutureofhd]

is that what they mean by progressive scan then? cause i wouldn't mind trying that feature out once i think. like to hear what all the fuss is about.

[gandley]

Originally Posted by fighthefutureofhd

how do you know if you have a progressive scan capable display/television? and what kind of television can do the progressive scan?

All flat panels are progressive scan. with the exception of old Alis panels and a very few 1080i sets in the early days, but just about every other flat panel TV converts all signals to progressive. its an old feature now.

[fighthefutureofhd]

Originally Posted by gandley

All flat panels are progressive scan. with the exception of old Alis panels and a very few 1080i sets in the early days, but just about every other flat panel TV converts all signals to progressive. its an old feature now.

even 780p televisions? thanks.

[UFAlien]

Just for the record, not ALL DVDs were 480i. There were, in fact, a good deal of 480p DVD releases where the progressive player and TV didn't need to deinterlace.

[AVDrummer]

Originally Posted by J6P

Blu-ray, however, is a fully progressive source all the way down the chain. Every Blu-ray disc (save for a tiny handfull of 1080i releases) contains a full 1080 lines of information for every rendering pass.

That pretty much answers my question. Thanks!

[cvj]

Originally Posted by J6P

Blu-ray, however, is a fully progressive source all the way down the chain. Every Blu-ray disc (save for a tiny handfull of 1080i releases) contains a full 1080 lines of information for every rendering pass.

I just discovered that the BBC/Discovery Channel PLANET EARTH boxed set of 4 Blu-ray discs is 1080i not 1080P.

Isn't it a bit misleading to label 1080i as Blu-Ray? I would think that most users expect Blu-Ray to be 1080P.

(In fairness, it does say 1080i in miniscule print on the box.)

[geneboi]

Planet Earth IS 1080p....I believe you are mistaken

[BruceWayne]

Originally Posted by geneboi

Planet Earth IS 1080p....I believe you are mistaken

Not the Discovery HD version... the BBC one is 1080p yes, Discovery 1080i

Originally Posted by cvj

I just discovered that the BBC/Discovery Channel PLANET EARTH boxed set of 4 Blu-ray discs is 1080i not 1080P.

Isn't it a bit misleading to label 1080i as Blu-Ray? I would think that most users expect Blu-Ray to be 1080P.

(In fairness, it does say 1080i in miniscule print on the box.)

It's still blu-ray, it's not like they are saying "in glorious 1080p" on the front and the back reads 1080i. bitrates are still better on blu-ray than 1080i cable, so it should still look better than an HD broadcast would

[dialog_gvf]

Originally Posted by cvj

I just discovered that the BBC/Discovery Channel PLANET EARTH boxed set of 4 Blu-ray discs is 1080i not 1080P.

Isn't it a bit misleading to label 1080i as Blu-Ray? I would think that most users expect Blu-Ray to be 1080P.

(In fairness, it does say 1080i in miniscule print on the box.)

Blu-ray doesn't mean 1080p/24. The BD spec allows for 1080i/60 as well.

It's a bit disappointing it didn't allow for 1080p/30, but as long as it encoded and a deinterlaced properly, a true 1080p/30 can be recovered.

Gary

[TheTenth]

Planet earth UK edition has the first 4 Blu-ray at 1080p and the fifth at 1080i, it's a print error on the cover

[Anthony P]

Blu-ray doesn't mean 1080p/24. The BD spec allows for 1080i/60 as well.

actually a lot more then that, that is why we can have SD extras

[4K2K]

Originally Posted by dialog_gvf

Blu-ray doesn't mean 1080p/24. The BD spec allows for 1080i/60 as well.

It's a bit disappointing it didn't allow for 1080p/30, but as long as it encoded and a deinterlaced properly, a true 1080p/30 can be recovered.

Gary

So for the 1080p30 content encoded in 1080i60 using progressive frames, is there any player that tells you in an info or display button that it is receiving 1080p30 for 1080p30 content within 1080i60 and that or tells you it's receiving 1080i60 when it's receiving interlaced 60hz content recorded & encoded in interlaced mode?

Which players can correctly detect the above and have a button that shows that it knows what the source really is and can correctly de-interlace it (I assume not the Panasonic machines as the reviews say they can't properly de-interlace interlaced content and aren't the best at upscaling).

Why doesn't Blu-ray add support for encoding of multiple frame rates on the disc (ie. not require that 1080p30 be be encoded within a 1080i60 encode)? If the PS3 was updated to support multiple rates (including 1080p25 & 1080p50), then over 50% of all Blu-ray players sold would be capable of this, and anyone who wanted it could buy one. If would also give an incentive for other players to also support it, possibly using firmware updates.

[welwynnick]

I've never really looked into this, but I think blu-ray players DO support multiple frame rates on the disc. The output format usually jumps around during the start-up chores, and between the trailors, extras and main feature. The latter is usually 1080p24, but the others can be 1080i60 or 480i60. I have a DVDO VP, and this is flagged up on the input and output format displays.

[SpikesBluBlooded]

I know more educated people will provide a more thorough answer, but the short answer is that the disc carries the video at 1080p. There is no "upscaling" being done from the disc to the player and out to the TV...