Zack & Miri- 1080i?

Dubliner1 · 21-11-2009, 9:33 AM

Can anyone tell me whether Zack And Miri Make A Porno is 1080i or 1080p..??
Cheers.

mentasm · 21-11-2009, 11:02 AM

UK disc is 1080i, but I think other territories got 1080p.

Dubliner1 · 21-11-2009, 1:17 PM

Quote:

Originally Posted by mentasm

UK disc is 1080i, but I think other territories got 1080p.

Thanks- I bought it anyway as it was only 6 quid.

nwgarratt · 21-11-2009, 2:19 PM

It is 1080i/50. The picture quality is excellent and only noticed about 2 seconds of juddering due to the 50hz.

Dubliner1 · 21-11-2009, 3:11 PM

Quote:

Originally Posted by nwgarratt

It is 1080i/50. The picture quality is excellent and only noticed about 2 seconds of juddering due to the 50hz.

Thx- yes very surprised by PQ

nwgarratt · 21-11-2009, 4:12 PM

Quote:

Originally Posted by Dubliner1

Thx- yes very surprised by PQ

It shouldn't matter that it is 1080i. Sure it is nice to have it 1080p from the start but it has to be turned progressive anyway for the display (either 720p, 768p or 1080p). It is the 50hz that is more of a concern but I have only seen juddering a few times. It can also still happen on 1080p/24 if the camera is panning to fast.

mentasm · 21-11-2009, 8:22 PM

Why would 50Hz make it judder? Surely they just speed the film up to 25fps like they do with PAL DVDs? That doesn't introduce additional judder because you're not adding or combining frames, just playing them back a bit quicker. You'll get film judder as with 24p content, because that's essentially what it is (just interlaced and played back at 25fps).

nwgarratt · 21-11-2009, 8:55 PM

Quote:

Originally Posted by mentasm

Why would 50Hz make it judder? Surely they just speed the film up to 25fps like they do with PAL DVDs? That doesn't introduce additional judder because you're not adding or combining frames, just playing them back a bit quicker. You'll get film judder as with 24p content, because that's essentially what it is (just interlaced and played back at 25fps).

Because the film was filmed in 24 and 24 doesn't go into 50. It is adding 2 frames each second.

You should not get judder when outputting at the correct 1080p 24hz (or multiple off 48hz, 96hz etc) however, some panning get carried away and the frame rate cannot keep up.

There is judder with 576/50hz DVD's too.

PAL's 4% SpeedUp

CrazyHorse · 21-11-2009, 11:38 PM

Does the UK release contain all the extras from the US disc?

mentasm · 22-11-2009, 1:06 AM

Quote:

Originally Posted by nwgarratt

Because the film was filmed in 24 and 24 doesn't go into 50. It is adding 2 frames each second.

You should not get judder when outputting at the correct 1080p 24hz (or multiple off 48hz, 96hz etc) however, some panning get carried away and the frame rate cannot keep up.

There is judder with 576/50hz DVD's too.

PAL's 4% SpeedUp

That's assuming you're trying to make 24* (edited this cause I wrote 25!) go into 50, and it generally doesn't work like that. With PAL DVDs at 25fps, and presumably 1080i/50 BDs (which is just another way of saying 1080i/25fps), they simply take the 24fps progressive film material, split it into interlaced field pairs, and speed it up by 4%. There aren't many that repeat frames/fields, and if they do it's down to super-crap authoring.

With the vast majority of PAL DVDs, and I would guess 1080i/50 BDs, there are no additional frames, hence no additional judder. PAL DVDs do not judder more than film or NTSC. In fact, they judder less than NTSC. You will get judder with 1080p/24 material because 24fps is a low framerate to begin with, but that judder is inherent to the source.

The only 1080i/50 BD that I have seen is The Promise, and that ran about 98 minutes, which corresponds to the 103 minute runtime of the US version when you take 4% PAL speed-up into account. The lack of additional judder and interlacing artefacts (both fields come from the same progressive frame) are the reason that many people preferred PAL DVDs, along with the superior resolution. Personally I hate PAL speed-up, so I usually went with NTSC if I had the option. Thankfully BD has largely eliminated this issue, save for the odd disc like this one.

Another weird one is A Tale of Two Sisters, which is 1080i/29.97. That really does have additional judder and interlacing artefacts.

nwgarratt · 22-11-2009, 12:08 PM

But the link is it is not about 25 into 50 but 24 into 50. 50hz and 60hz will add judder.

Quote:

"1080p" doesn't necessarily tell you what frame rate the content is being displayed at, though. As per my response above, most American HDTVs still run at 60 Hz, which will add judder to film-based movies. To reduce the judder, you'll need to verify whether your TV can accept a 1080p24 input signal from a Blu-ray player, and whether it will display that signal at the original 24 fps (or an even multiple such as 48 Hz, 72 Hz, 96 Hz, etc.). Many 1080p HDTVs simply add 3:2 Pulldown to a 24 fps signal to bring it back to 60 Hz, judder and all.

If the film was shot in 25fps such as Wallace and Gromit Loaf and Death then there will be no judder. Of course this then make it hard for people to watch it in the US as there TV's can only do 60hz.

Anyway this is off topic so I won't be posting anymore.

mentasm · 22-11-2009, 12:31 PM

How is it off-topic when the thread is about 1080i and I'm just trying to explain how it works? I know part of the page you linked to is about adding frames, but this is not usually how 24fps content is changed to 25fps content (which is what the rest of the page discusses).

Anyway, I meant 24 in the post above, but I'd had a bottle of wine when I wrote it and didn't notice the typo! Converting 24fps content to 25fps should not introduce additional judder if done correctly. My own eyes tell me that from years of comparing PAL and NTSC DVDs and now BDs.

BTW, I'm not trying to wind you up or anything, but I'm a little bit OCD and can't help going into this stuff in detail. My brain works in funny ways!

CrazyHorse · 22-11-2009, 4:08 PM

Quote:

Does the UK release contain all the extras from the US disc?

Anyone?

Dubliner1 · 22-11-2009, 9:02 PM

Quote:

Originally Posted by mentasm

How is it off-topic when the thread is about 1080i and I'm just trying to explain how it works? I know part of the page you linked to is about adding frames, but this is not usually how 24fps content is changed to 25fps content (which is what the rest of the page discusses).

Anyway, I meant 24 in the post above, but I'd had a bottle of wine when I wrote it and didn't notice the typo! Converting 24fps content to 25fps should not introduce additional judder if done correctly. My own eyes tell me that from years of comparing PAL and NTSC DVDs and now BDs.

BTW, I'm not trying to wind you up or anything, but I'm a little bit OCD and can't help going into this stuff in detail. My brain works in funny ways!

A lot of Sony tvs accept NTSC and PAL signals so maybe this solves the problem with judder?

Dubliner1 · 22-11-2009, 9:17 PM

Quote:

Originally Posted by CrazyHorse

Anyone?

The U.K. release has 2 documentarys...'Popcorn Porn:Making of Zack & Miri' (1hr 14mins approx) and 'Money Shots:The making of Zack & Miri Make a porno' (48+mins), Deleted scenes, Comic Con feature (20+mins) and Bloopers.
If you look on dvd empire dot com which shows the cover art, the back of the U.S. release seems to have all the features of the UK disc and 1 additional feature called 'Seth Vs. Justin: Battle for improvisational supremacy'. (7+mins)
The picture quality on the extras is poor- so the U.S. version may be better- don't know for sure though.
U.S. version has Dolby TrueHD, UK has dts-HD master audio.
Most importantly- U.S. version is a 50GB disc, and 1080p transfer.