toddler
Jan 2006
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Just to add some clarification on the "Black Bars"
The Black Bars are always present when watching widescreen content on 4:3 Display Units. They will be above and below the screen. Providing the picture isn't zoomed or stretched.
They will be on 4:3 content on widescreen Units, providing no zooming or streching. here they will be to the left and right of the image.
Getting rid of these bars is not the real issue, as some of us prefer watching movies in their OAR (orginal aspect ratio).
In the encoding process however, some rules hold true. Those black bars must be cropped. The cropping does not get rid of the bars or alter the ratio of the movie. It removes the very sharp line between the actual pictures and the black bars. This is what we are concerned about - the sharp line. For enconding, the sharper the image, the more detail visible, the harder the encoding app has to work to make the image look good.
Bitrate is almost always never enough, wasting precious bits just to maintain the "sharp line" is simply as waste. Improving overall image quality is the purpose of this rule.
Some of these rules are not explained. But they make good sense. If it were not for these rules, standalone video players may not have been so popular, bringing about devices that play divx/xvid for all of us. Some of these devices are budget units that have weak processors and do poorly when the resolution is increased. Which may need to be done to keep the "black bars", otherwise the overall resolution will be reduced to keep it compatible and yes - a reduction in image quality.
Having these rules bring about a standard that assist the "scene" to regulate the quality, this in turn will allow digital distribution to dominate over disc based distribution as the legal method to obtain movies in the upcoming years.
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01-03-2006 01:00 PM
LOL 
