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Darth Editous

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Join date
23-Mar-2005
Last activity
5-Apr-2024
Posts
844

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Post
#405487
Topic
1984 A New Hope Project (* unfinished project *)
Time

kamyio said:


No sir, this isn't the normal red and blue 3D, trust me I've watched those and even the attempts on making stereoscopic (Avatar 3D like) have been embarrassing, no I'm using a multitude of different scripts and editors that allow me to choose the objects and pieces for 3D as well as the depth at which the pieces are at.  <span style="font-family: arial, sans-serif; line-height: normal; font-size: 17px; border-collapse: collapse; white-space: pre; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px;"> </span>


Either way, it seems like an awful waste of time to transform a decades-old VHS copy of an 4:3 NTSC broadcast into 3D...

DE

Post
#405372
Topic
STAR WARS: EP V &quot;REVISITED EDITION&quot;<strong>ADYWAN</strong> - <strong>12GB 1080p MP4 VERSION AVAILABLE NOW</strong>
Time

Jaitea said:


Absolutely beautiful, but would be hard to tie into the previous fly-through shot which ends on the existing buildings.

J


I, for one, could happily live without that sequence.

LOOK AT MY CGI! No thanks, George :(

Edit: on the other hand, looking just above, I'll happily look at Ady's CGI.

DE

Post
#405298
Topic
1984 A New Hope Project (* unfinished project *)
Time

adywan said:

VHS conatins only 250 (?) vertical lines resolution.


I might have to change my name to Captain Nitpick...

The one thing VHS does have is full vertical (480i in this case) resolution, because each line is recorded "separately". It doesn't, really, have a horizontal resolution that you can measure in pixels/columns. If you re-record VHS several times, horizontal resolution will suffer but the horizontal lines themselves (vertical resolution) will remain distinct.

No, not retail software, things like converting to 3D scripts etc.


If you're talking about the kind of clips I've seen on YouTube of movies converted to "3D" with scripts, as far as I can tell these really don't work. You may as well just warp the image randomly and it'd be just as "3D".

DE

Post
#403618
Topic
STAR WARS: EP V &quot;REVISITED EDITION&quot;<strong>ADYWAN</strong> - <strong>12GB 1080p MP4 VERSION AVAILABLE NOW</strong>
Time

So when you upscale a DVD to HD and the pixels match perfectly doesn't that mean that the correct ratio of a* widescreen DVD is in fact 1024x576.


True, but only if by "a" you mean "this particular" ;) I guess this is just the way they do things these days (ignoring what is admittedly an archaic and outdated - but still valid - standard), but if you find a DVD with thin black bars at left/right, that'll be NAB and you should definitely take it into account in that case.

DE

Post
#403466
Topic
STAR WARS: EP V &quot;REVISITED EDITION&quot;<strong>ADYWAN</strong> - <strong>12GB 1080p MP4 VERSION AVAILABLE NOW</strong>
Time

Even after effects up until cs4 had the aspect ratio resized to 1024 x 576.


Which leads me to infer that someone spotted the error and fixed it ;)

WINDVD also resized PAL widescreen to 1024 x 576 so it seems that many players use this standard


Still don't make 'em right:

http://www.bbc.co.uk/commissioning/tvbranding/picturesize.shtml
http://forum.doom9.org/archive/index.php/t-132378.html
http://dvd-hq.info/faq.php (third question)
http://lipas.uwasa.fi/~f76998/video/conversion/

So basically it's a big mess. Whatever you did, Ady, was obviously right because you were matching SD to HD. Unless the HD footage doesn't really have square pixels... quick, someone get me the exact dimensions of Mark Hamill's face! (edit: both of 'em)

DE

Post
#403350
Topic
STAR WARS: EP V &quot;REVISITED EDITION&quot;<strong>ADYWAN</strong> - <strong>12GB 1080p MP4 VERSION AVAILABLE NOW</strong>
Time

adywan said:


sorry DE but i have to disagree there.


No need to apologise about disagreeing amicably! You're right that the DVD scales straight up to 1920x1080 - this means (I'm 99% certain) that the DVD is wrong. It's a bit sad that it doesn't even hurt to say that any more ;)

If you create a 720x576 image in Photoshop (CS or above) and set the aspect ratio (under advanced) to Wide PAL, it will be displayed at a width of 1051 pixels, not 1024.

Both VLC and Windows Media player get this "wrong" too, so I may try to dig a little more for a definitive answer.

DE

Post
#403188
Topic
STAR WARS: EP V &quot;REVISITED EDITION&quot;<strong>ADYWAN</strong> - <strong>12GB 1080p MP4 VERSION AVAILABLE NOW</strong>
Time

adywan said:


The HD source was downscaled to 1024 x 576 and would have been  scaled down to 720 x 576 and 720 x 480 for the respective PAL & NTSC DVD's.


I almost hate to say this Ady, but those numbers are the tiniest bit wrong...

720x576 pictures should be upscaled to ~1050x576, because 16 (NTSC) or 18 (PAL) of those 720 pixels make up nominal analogue blanking and should not to be taken into account when calculating aspect ratios. The reverse is also true - HD video should be scaled to 702x576 or 704x480 and padded to 720 (or just 704, which is also legal for DVD video).

The Death Star schematic in my ANH edit is 2.5% off a true circle for exactly this reason *facepalm*. But as I've recently realised, the actual Death Star is 10% off, so no biggy.

Happily, the difference is barely noticeable even for that circle, and there's no NAB in HD which does have truly square pixels, but if we weren't sticklers for detail we wouldn't be here, right? ;)

DE

Post
#402332
Topic
***The &quot;Darth Editous&quot; Episode IV DVD Info and Feedback Thread*** - a partially &quot;de-specialed&quot; DVD
Time

Chewtobacca said:


Yes; the Death Star looks really good.  The improvement in the Star Destroyer is even more marked, in my opinion.  I am really excited about the new version of your edit.  The color correction pictures look amazing.


Don't get too excited - the amount of things to be done makes lean even more towards waiting for an official blu-ray and doing an HD edition.

I thought this was for blu-ray.  I have always been told that unless I am viewing a blu-ray on exact scan I am not getting the full picture quality. This is what I set my TV to every time I watch blu-ray.


Okay, that does make sense - I guess movies don't consider overscan, and a 1:1 correspondence of pixels would make for a (slightly) better picture.

Why is ovescan unrelated to NAB?  When I looked at NAB in that wikipedia article it seemed to relate it to overscan. No doubt I've misunderstood again.  :-)


It says that NAB is the outermost part of overscan, but that's just coincidence - the two concepts aren't really related.

From what I read it seems that this 1050 instead of 1024 business is just because if you resize exactly to 1024 people with old sets lose part of the picture, as it then seems "lifted" slightly on their screens when it overscans.  I don't think this affects the AR itself though.  Isn't it more the scope of the film?


1050 instead of 1024 is because only the 704 pixels contribute to the calculation of aspect ratio - the extra 16 are superfluous and should be "resized" to outside of the 1024x576 box.

DE

Post
#402308
Topic
***The &quot;Darth Editous&quot; Episode IV DVD Info and Feedback Thread*** - a partially &quot;de-specialed&quot; DVD
Time

Chewtobacca said:


Thanks for your explanation, DE.  I'm still a little in the dark though. :-)  (Sorry to talk about this in your thread.)

These black bars are designed for old non-HDTVs that overscan, are they?


I think so, yeah - I think it was there to give the TV time to get from the end of line to the beginning of the next. It was kept when everything went digital, but now that resolutions have changed, it's no longer a consideration with HD.

If you view many DVDs on your widescreen television on exact scan (or just scan, whatever the manufacturer calls 1:1) you can see the black bars.  Would your TV be functioning as a square pixel display in this case, or is it just monitors?


TV pixels are never square, whether you account for NAB or are working in PAL, NTSC, anamorphic or not... I don't know why TVs offer "exact scan", because overscan (unrelated to NAB) dictates that around 5% of the picture around the edges should be considered "unsafe", and professional TV is produced with this in mind (including HD).

I was just taking snapshots of my sources into photoshop, measuring the pixels of visible image, calculating the aspect ratio accordingly and resizing.  I take it I did right?


Pretty much - I'm not sure why it was 7 instead of 8, but that's close enough.

I am sorry to be a massive pain in the neck, but this is a new thing to me.  Can you explain exactly what you did with the Death Star footage?


I was previewing everything with an AviSynth script that resized the video so it was displayed at the correct aspect ratio and I realised the Death Star didn't have a circular outline, so I've just stretched it up (or squished it in sideways) to compensate. I think it looks a lot nicer like that.

DE

Post
#402186
Topic
***The &quot;Darth Editous&quot; Episode IV DVD Info and Feedback Thread*** - a partially &quot;de-specialed&quot; DVD
Time

It's down to nominal analogue blanking.

The 8 pixels at either edge (strictly, PAL borders are 9 pixels but 8 is sometimes an easier number to work with) are to be treated as "garbage", and not included in any size/aspect ratio calculations.

HD doesn't have NAB, so an HD picture should be scaled down to 704x576 and padded (although 704x576 is also valid for DVD video, so you could skip padding it to 720).

Likewise, to display 720x576 anamorphic video on a square-pixel display, it should be cropped to 702 and scaled up to 1024x576 (a 16:9 frame). Almost equivalently, you can skip the cropping and scale to ~1050x576.

DE

Post
#401303
Topic
Star Wars OT &amp; 1997 Special Edition - Various Projects Info (Released)
Time

Chewtobacca said:


Do DJ and DE have any thoughts on this? 


Wow, I must have missed that I was being asked first time around - do I have any thoughts on this? Not so much, no... that is to say, it could indeed be done (I'm not sure what you mean by my new 480p project - if I do another edit before SW comes out on BD, it'll be based on the PAL DVD again).

The noise reduction is just too bad in the GOUT for me to want to do this for every SE addition - it was okay for that checkpoint scene, but (for example) when they go past the next Ronto before stopping outside the Cantina, the GOUT quality is abysmal.

DE