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| Registered: December 10, 2007 | Reputation:  | | Posts: 3,004 |
| | Posted: | | | | All HD video uses a 16:9 frame. When DVD Profiler-added support for HD DVD and Blu-ray, I don't think that it handled this properly. The way it thinks of data now, no Blu-rays are 16x9, when it should be all Blu-rays.
This isn't just nitpicking. If you do a filter for widescreen profiles which are not 16x9, you get non-anamorphic DVDs, plus Blu-rays. You can restrict to DVD-only and get correct results, but the point is that mixing widescreen material in a non-widescreen frame and any shape of material in a widescreen frame under the same data entries is bad design. |
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| Registered: March 23, 2011 | | Posts: 462 |
| | Posted: | | | | No blu-rays are "16 x 9 Enhanced", ( means Anamorphic) .
If you do a filter for widescreen profiles which are not 16x9 Enhanced, you get non-anamorphic DVDs, plus Blu-rays. That is correct. Blu-Ray's are non-Anamorphic. | | | | Last edited: by No-way |
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| Registered: March 13, 2007 | Reputation:  |  Posts: 2,217 |
| | Posted: | | | | Quoting Ace_of_Sevens: Quote:
All HD video uses a 16:9 frame. When DVD Profiler-added support for HD DVD and Blu-ray, I don't think that it handled this properly. The way it thinks of data now, no Blu-rays are 16x9, when it should be all Blu-rays. But the "16x9" we have for DVD is a marker for anamorphic-enhancement, meaning a native 4x3 picture that carries squeezed 16x9 picture-information. Applying this to BD would simply be wrong in my opinion because they are 16x9 native. Quote:
If you do a filter for widescreen profiles which are not 16x9, you get non-anamorphic DVDs, plus Blu-rays. You can restrict to DVD-only and get correct results, Mission accomplished. Yes, if you filter you really have to be aware what you are filtering for. cya, Mithi | | | | Mithi's little XSLT tinkering - the power of XML --- DVD-Profiler Mini-Wiki |
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| Registered: December 10, 2007 | | Reputation: | | Posts: 3,004 |
| | Posted: | | | | What does 16x9 enhanced really mean, though? It seems to me that it means there is metadata saying to interpret the video as being 16:9 shaped when decoded. Blu-ray has this as well. The fact there is no 4:3 option doesn't change this fact.
DVD isn't really natively 4:3. It has a flag that can make it 16:9 or 4:3, but neither uses square pixels or is otherwise more correct. | | | | Last edited: by Ace_of_Sevens |
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| Registered: March 23, 2011 | | Posts: 462 |
| | Posted: | | | | 16:9 (enhanced) and 4:3 (non-enhanced) DVDs uses the same resolution. Non-enhanced DVD's will display a 4:3 picture. Enhanced DVD's are flagged to use a 16:9 display aspect ratio instead of 4:3.
Blu-ray Discs are natively 16:9. No enhancement is required. | | | | Last edited: by No-way |
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| Registered: March 13, 2007 | | Reputation: | | Posts: 2,217 |
| | Posted: | | | | Quoting Ace_of_Sevens: Quote:
What does 16x9 enhanced really mean, though? http://en.wikipedia.org/wiki/Anamorphic_widescreenQuote:
It seems to me that it means there is metadata saying to interpret the video as being 16:9 shaped when decoded. Blu-ray has this as well. Simply: no. Again: DVD always(!) has a 4:3 picture. The widescreen-flag only tells the TV-set to stretch the available picture information over the whole 16x9 screen, no information (picture-wise) is gained from anywhere. This trick worked on CRT-TV because on how they function (line-based). For modern pixel-based LCD- or Plasma-TV this doesn't gain anything except the correct picture-ratio. BD has a picture that really is 16:9 cya, Mithi | | | | Mithi's little XSLT tinkering - the power of XML --- DVD-Profiler Mini-Wiki |
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| Registered: December 10, 2007 | | Reputation: | | Posts: 3,004 |
| | Posted: | | | | What makes it stretching? That's just an metaphor brought over from anamorphic shooting processes with film where you were taking a 4:3 image on film and projecting it onto a 2.39:1 screen. The digital video files on a DVD don't have a physical shape to be stretched unless you use the pixels aspect ratio. In that case, it's either 1.25:1 (PAL) or 1.5:1 (NTSC). People just think of 4:3 as the default because that was the shape of most TVs when DVD was introduced. Nothing about DVD itself makes it more valid than 16:9. |
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| Registered: March 13, 2007 | | Reputation: |  Posts: 5,493 |
| | Posted: | | | | Bottom line to what Ace is asking is all HighDef ( BD and HDdvd) should have anamorphic box ticked ......
which I would like too ... | | | In the 60's, People took Acid to make the world Weird. Now the World is weird and People take Prozac to make it Normal.
Terry | | | | Last edited: by widescreenforever |
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| Registered: March 19, 2007 | Reputation:  |  Posts: 6,018 |
| | Posted: | | | | Nonsense - there is no such thing as anamorphic in the high-def world. |
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| Registered: December 14, 2010 |  Posts: 90 |
| | Posted: | | | | Well, actually there is. See, e.g., Wikipedia's "Blu-ray" article. Blu-ray specification has support for anamorphic 1440x1080 resolution. Unlikely though, that any movie will ever be mastered at 1440x1080 resolution; if I'm not mistaken, the support for that resolution is there solely for digital camcorders. Having anamorphic selectable in DVD Profiler for Blu-ray or HD-DVD would be serious misuse of the term  |
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| Registered: March 13, 2007 | | Reputation: |  Posts: 3,197 |
| | Posted: | | | | Quoting widescreenforever: Quote:
Bottom line to what Ace is asking is all HighDef ( BD and HDdvd) should have anamorphic box ticked ......
which I would like too ... Absolutely not. That's just plain wrong. There's just one thing that could be different and that is our definition of "full screen" in the 16:9 native domain. But if I think of it as academy ratio or "Old tube TV" ratio it still works.  | | | | First registered: February 15, 2002 |
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| Registered: March 13, 2007 | | Reputation: | | Posts: 5,493 |
| | Posted: | | | | just because all HD programming is anamorphic- but not needed to be mentioned on packaging - should be made a point of in Profiler data ..
If I want to find what non anamorphic titles I have now,, it will give me all my titles that are not ticked.. or catagorized as anamorphic .. therefore I would have to go a further step and make sure my search is for non HD titles.. It's just a another step in finding and not really needed ... | | | In the 60's, People took Acid to make the world Weird. Now the World is weird and People take Prozac to make it Normal.
Terry |
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| Registered: March 13, 2007 | | Reputation: | | Posts: 2,217 |
| | Posted: | | | | Quoting Ace_of_Sevens: Quote:
What makes it stretching? On CRT-TV, the scanning coil of the tube. On pixel-based machines a graphic processor. But they "invent" the missing data by interpolation. Quote:
The digital video files on a DVD don't have a physical shape to be stretched unless you use the pixels aspect ratio. In that case, it's either 1.25:1 (PAL) or 1.5:1 (NTSC). People just think of 4:3 as the default because that was the shape of most TVs when DVD was introduced. Nothing about DVD itself makes it more valid than 16:9. Sorry, that's plain wrong. cya, Mithi | | | | Mithi's little XSLT tinkering - the power of XML --- DVD-Profiler Mini-Wiki |
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| Registered: March 13, 2007 | | Reputation: | | Posts: 2,217 |
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| Registered: December 14, 2010 | | Posts: 90 |
| | Posted: | | | | Quoting Mithi: Quote:
Quoting widescreenforever:
Quote:
just because all HD programming is anamorphic
For the mercy of Gandhi: No, they are not! 
Exactly, none of them are. "Anamorphic widescreen" is DVD terminology; content is stretched horizontally to fill the whole width of your widescreen TV. Blu-ray content is just "widescreen", it's not anamorphic; content is displayed "as is" on your widescreen TV. |
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| Registered: March 13, 2007 | | Reputation: | | Posts: 5,493 |
| | Posted: | | | | when I play non anamorphic (dvd) on my TV it is a square box floating in the center of my TV screen .. ''enhanced'' fills the screen automatically i.e. no stretching no zooming ... HD does this automatically.. why? because it is programmed to be anamorphic or enhanced and since it is all and et all HD no sense in the obvious..
BUT have you ever watch HD TV and notice that every now and then a commercial ( even a major sponsor) has opted not to go FULL HD only partial.. in what the pixels or the anamorphic area?? ) .. and the commercial would be surrounded by a black box? is it HD or not??.. and if not how can it be if on HD channel.. answer: Not a true HD program ( commercial).. Yet on a Blue Ray there would be areas of programming such as features that are not true anamorphic and will have black borders.. why? because it is not HD programing... so My reasoning is some are anamorphic and some are not .. Such old classics as Gone With the Wind or Casablanca are in HD and are anamorphic to its 4:3 ratio.. No problem there but it is not true 4:3 as it is really 1.78 ( in HD) with a Black border on each side to show case it's 4:3 .. | | | In the 60's, People took Acid to make the world Weird. Now the World is weird and People take Prozac to make it Normal.
Terry | | | | Last edited: by widescreenforever |
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