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All Forums > Tech Talk > Tech Talk Forum Page 37 > Upscaling SD to look more "HD"
AuthorPost
DoubleAnalFan
Member


50 Posts
11/04
Posted - Jan 8 2007 : 2:09AM
Hi guys. I'm a tech noob. I'm thinking about getting a HD-TV. I just bought a DVD player that upscales SD to look more "HD". I'm wondering whether it's true. Am I really going to see a discernable difference on a HD-TV by upscaling SD pornos? Anyone have any experiences with this?
Thanks in advance.
croy
Platinum Member

Discovry
4574 Posts
3/04
Posted - Jan 8 2007 : 5:29AM
Well you can't be adding resolution. What you can hope for is compatibility that doesn't look bad.
Dreamer
Member

95 Posts
9/04
Posted - Jan 8 2007 : 9:53AM
It'll make good quality DVDs a bit better, it'll make bad quality DVDs worse is my understanding.
pinc_noiz
Deactivated User

758 Posts
6/05
Posted - Jan 8 2007 : 11:00AM
Your HDTV has more lines of resolution than there are on a SD-DVD, so the image must be upconverted somewhere; doing it in the player itself can offer a slightly better picture by having the original data from the disc on hand while processing (the TV would work on data it can't 'see' in it's original form, making it harder to intelligently manipulate successfully). Upsampling is an intelligent interpolative process, in that it 'guestimates' what should fill an 'absence' of information retrieved from a disc (against 'up-scaling' using mostly hardware scaling, giving basically no performance increase at all).

Upsampling is a process in which the sampling-rate (-frequency) is increased prior to conversion into viewable pictures, allowing the designer to do all filtering/ manipulating things benignly making use of this larger (frequency) headroom. The upsampling processes takes place in chipsets working on heightened frequencies, providing extended signal bandwidth, accommodating filtering/ manipulating all kind of (unwanted) data-related signals (noise, harmonic distortion, picture non-linearities) out of the video signals (and interpolatating new/ desired data), without SD's frequency limitations. These chipsets are more vulnerable for non-optimal board (PCB) layout/ less-then-stable clocking/ high frequency interference (non-optimal screening) and so on, making 'upsampling' not a general magical trick. Poorly executed, it will create nasties like macroblocking and smearing.

When done right, I can say without hesitation that a well encoded (SD-)movie will look just stunning on a HDTV (poorly encoded it will not look that great, but that is just because the DVD player will show these imperfections a lot more due to the higher quality display connected). There are substantial benefits upconverting SD material to 720/1080 on a HDTV: in general positively more crisp and detailed, with a more natural and non-fatiguing picture than probable thought possible from SD-DVD's. Not 'true-HD', but upconverted SD-DVD signal, via HDMI/DVI or component-video onto a HDTV screen is absolutely higher-def: very worthwhile doing IMO.

p_n

DoubleAnalFan
Member

50 Posts
11/04
Posted - Jan 8 2007 : 5:09PM
Thanks for the help, P_C and Dreamer. P_C, are the SD porn DVDs that are being released today encoded well enough to enjoy the benefits of upscaling?
Thanks again.
I ask, because I'm watching Throat Gagges 4 with a Sony DVD player on a CRT Panasonic (3 year old model). And I'm noticing that background objects, such as couches and tables, are not very well defined. What's more, sometimes their blurriness shifts into what looks like a more precise image. The shifts last less than a second; I'm wondering if upscaling would correct such a problem.
 
pinc_noiz
Deactivated User

758 Posts
6/05
Posted - Jan 9 2007 : 5:50AM
Porn DVD's aren't exactly known for being technically perfect (according to Mike South, 90% of everything in porn is crap ...). But what is 'crap' to Mike, maybe is 'perfect' for me, or Bill's 'pretty well'. Your 'well enough' in "are the SD porn DVDs that are being released today encoded well enough to enjoy the benefits of upscaling" can't be answered by me, be course I simply don't know by which standards you watch your movies.
Besides, the blurriness you noticed when watching Throat Gaggers 4 can be related to both the filming/recording technique and the disc-manufacturing process used for this DVD. Please take note, faults in content and/or production of DVD's can't be corrected by upconverting (when upconverting corrupted data, the new data will be corrupt too ...). BTW; I read 'upscaling' in your posts too: as this is done by fixed-scaling (like 2x3=6) this will hardly add anything on picture-quality. 'Upconverting' uses intelligent software to make up/ fill in needed data (the 3...5's to get from 2 to 6 in this numerical example): when done right this will add on picture-quality.

p_n

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