Is it better to encode at anamorphic (full) resolution ?

[Didée]

SMD:

I'm not that extraordinary familiar with all the according specifications, but wasn't there something about ITU BT.601, which - on balance - implies that the *active image area* (which should be 702~704 pixels) should be scaled to 1024? Then you would have to scale your not-cropped 720*576 frame to 1048*576, not 1024 ...

Another question is which specs (if any :rolleyes: ) were considered when the source was mastered ...
My general rule of thumb, unless my eyes tell me something other, is:
If the (apparent) active image area is less then ~708, then I'll calculate based on 1048. If it's >=710, then I'll use 1024 as base for scaling.

Not always true, but mostly.


- Didée

[SeeMoreDigital]

Yes, you are right Didée,

However, I feel such discussions are better left until the person/persons asking the initial questions (about anamorphic images/ anamorphic encoding) obtain a basic level of understanding!

If we roll straight into all the different specs straight away I feel this will (and does) confuse the hell out of people.

That said, have you noticed that when DVD was in it's infancy a typical 1.85:1 movie and some 2.35:1 movies were presented with vertical black 'over-scan' mattes to the left and right of the image. Nowadays however, this trend seems to have been abandoned.


Cheers

[Koepi]

Most likely due to the massive amounts of "full display size" displays like tft TVs, monitors and beamers sold in the last years.

Imagine you'd look at such a DVD with a nice 19" tft monitor. I prefer having "full horizontal resolution" there... :)

Regards
Koepi

[Splashdriver]

To calculate this, multiply (16:9) 1.77 (recuring) by 576. Which means you would end up with a pixel frame size of 1024x576 pixels.

Or to be even more accurate it's: 1.777778*576=1024.000128

Greetings,
Splashdriver

[SeeMoreDigital]

Originally posted by Koepi
Most likely due to the massive amounts of "full display size" displays like tft TVs, monitors and beamers sold in the last years.

Imagine you'd look at such a DVD with a nice 19" tft monitor. I prefer having "full horizontal resolution" there... :)

Yes, that's a bloody good point Koepi and is the most logical explanation.

This is one of the reasons why I find it unbearable to watch some of the early DVD's on my new 1366x768 plasma screen.

Imagine watching this badly presented DVD for any length of time.

http://img47.exs.cx/img47/3066/SMD_BladeRunner_crap_presentation.jpg

I like watching Blade Runner but hate this transfer as the vertical boarders wiggle about from left to right and even begin to slope during a couple of shots.... urgh!


Cheers