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Discussion Starter · #1 ·
I will try something different. I will edit the OP as soon we are finished with this experiment. BTW I would also like AVS members participation in choosing the scenes to cap. Put in the timestamp and I will do my best to post it.

Blu-ray 18.40 GB VC-1


HD DVD 12.80 GB VC-1



Like many other AVS enthusiasts I have been looking forward to this release because of obvious reasons. I ask myself how well VC-1 performs in various bitrates and if using its maximum capability will result in more perceptible PQ.


I have been reading numerous threads from various forums to gain some basic insight in the making of this release. Two things is apparent and might result in less than perfect screenshots.


One - Every shot is artifially processed to create a "look" preferred by the producer. I have nothing against that but when you look at other nature shows at Discovery HD like Sunrise Earth or Destination HD its sorely lacking in detail and sharpness. This is NOT a criticism to the makers. This just my personal preference when watching this kind of programming.


Two - Interlaced 1080i - This is one really gave a pause. How can I grab a frame if my Haali renderer and spliiter can't deinterlace while frame capturing? This one I'm stuck with if you guys can help me here
Otherwise while in motion MPC plays it back fine. Everyone is welcome to share their toughts on this one. If only this is 1080p it would be much easier and preferred for this kind of experiment.


Even then people will scoff at this attempt so we should put a shout out to those poeple who has high-end HT setups that next time they do a AVS meet. BD and HD DVD playing at the same time blind testing. Look if you can confidently pick which one is which.

YES! this will be a blind test.


Guess which one is BD or HD DVD. Use this format:


Post #

Left - BD or HD DVD

Right - BD or HD DVD


Please use DVI or HDMI connection viewing this pictures. This UHQ images won't be the same if your are seeing this thru analog connections.

************************************************************ **************
Update:


Blind test answers:


Post #2

C1 = BD

D1 = HD DVD


Post #3

Q1 = BD

R1 = HD DVD


Post #4

M3 = BD

N3 = HD DVD


Post #5

I4 = HD DVD

H4 = BD


Post #6

T5 = HD DVD

U5 = BD


Post #7

E6 = HD DVD

F6 = BD
 

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Thank you House for the mouseovers
Hope we can get some screencaps of leaves (closeups) from the Fall part of the discs as those would be even better for comparison.

http://www.mbmg.de/hd-discs/
 

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I cannot see any difference. I think we'll need a mouseover for comparison.
 

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RHS images appear more detailed and sharper to me.
 

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Quote:
Originally Posted by Xylon /forum/post/11958054


Two - Interlaced 1080i - This is one really gave a pause. How can I grab a frame if my Haali renderer and spliiter can't deinterlace while frame capturing?

Several possibles:


1) In Vista you can screengrab stuff with EVR, even after it's gone through hardware deinterlacing (to my surprise, as you couldn't do this in XP). Only problem is you need an ATI 2600/2900, or Nvidia 8600/8800, as the lower models can't do vector/motion adaptive deinterlacing on VC1/h264. Problem is you need to know about all the crappy little ins and outs, bugs and foibles of whatever driver/card/filterchain/player combo you choose (see my sig!). Here's an example of this:




Click on it to see, note the CPU use and dxva/nv12 showing the hw acceleration/deinterlacing. That's some 20mbit 1080i50 h264 off BBC HD, so it definitely needs the acceleration (yes I know it's levels expanded, that's deliberate for PC playback).


Best point about this method is you have an exactly equal level of deinterlacing on both discs - this isn't the case when you compare Bluray to HDDVD set top boxes side by side, as the deinterlacing quality can really vary. It also gives you an accurate reflection of what the viewer would actually see.



2) Demux the m2ts and evo files, and use PowerDVD to play the resulting raw video. Go into config/video, turn off hw acceleration, goto advanced, specify bitstream analysis and pixeladaptive (note you'll probably need an o/ced c2d or quadore for this). Because you're now in file mode rather than (protected) disc mode, the capture frame button now becomes available (and in settings you can make it so that this dumps the full frame minus scaling, but after other postprocessing like deinterlacing). Note I haven't tested all this, and there are anumber of things that could go wrong!



3) By far the easiest: wait until you've got a frame with zero motion, and set the decoder to weave. This gets you max resolution without combing artifacts, and because it can be done in software you can screengrab regardless of your hardware setup. Does kinda exclude all those nice waterfalls though.




Good thread btw!
 

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first pict (water fall) left Blu-ray, right HD-DVD


second pict (lake) left Blu-ray, right HD-DVD


Blu-ray is sharper and more details in the dark, if I'm wrong then I guess I need and eye check.
 

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Quote:
Originally Posted by jkcheng122 /forum/post/11959300


hm i'm seeing the pics as top and bottom so i'll assume the top one is left.


#2:

Left: HD DVD

Right: Blu-ray

You need to scroll your screen left and right to compare, there are 4 pict total.
 

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Quote:
Originally Posted by Khoi Pham /forum/post/11959316


You need to scroll your screen left and right to compare, there are 4 pict total.

per post? i see two screens on post 2 and another two on post 3. work computer is only 1280x1024.
 

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By the way, these pics are levels expanded (probably Haali renderer is set to TV>PC conversion). Maybe better to present them unprocessed, so there's less to quibble about.
 
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