New answers tagged video-quality
1
For distribution to theaters, typically the files are several hundred gigabytes to a terrabyte per film (depending on the quality level that they choose to distribute). Even for cinema, some compression is generally used though the quality is still higher than bluray. Even if they choose lossless, compression can still probably cut it down by a significant ...
4
DVD and Blu-Ray content makes massive use of lossy encoding.
An easy way to see for yourself is to find a dark scene in a film, and then pause it. If the only issue was a limited number of black levels, you would expect to see a stepped gradient curve from the darkest region to the lightest region. Of course, if true 24-bit color was being used, the ...
3
Your guess is correct. That would be fully uncompressed, true to its settings.
You're right, there's only so much data that disks can handle, so there's compression that does need to take place. We can't always notice it. That's why there's different formats (MOV, MP4, WMV). They all have their individual compression types. Compression, really, is just ...
4
48 to 25 should be better because you have more frame information to interpolate, though the contents of the clips could also matter. If all the 48 fps clips are high speed motion while the 25 is relatively static shots, then it will probably interpolate better.
The key is that frames are going to have to be guessed at and the less time that passed from ...
0
Have you noticed, when watching tv, it is hard to read a license plate off a car if that said car is showing wholly with some surroundings on the screen? When the storyline of the tv-program needs to show you the license plate, they move in close and really show you the plate. Can't do better even when they do have very expensive high quality large lens ...
7
HD simply refers to a given number of pixels in the signal, not some measure of quality. Even 1080p TV is lower resolution than the photos on most camera phones. Even the 4k video used in the latest Hollywood blockbuster movies is lower quality than the still photos of most camera phones. Video takes up far FAR more data than stills. If you think about ...
1
The camera's sensor possibly has 1,280 × 720 = 921,600 pixels arranged in a Bayer Pattern. Half of the pixels are green, a quarter are red, and the remaining are blue. It takes more than one such pixel to calculate an actual full-color pixel, through an interpolation process called demosaicing. This process leads to blurry images when viewed at full ...
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