4 ms·
> A 50FPS signal (max 25Hz) sampled at 60Hz should not produce any errors. Only if you bandwidth limit the output. In this case a frame blending video shader w
by rasz 4y ago
> A 50FPS signal (max 25Hz) sampled at 60Hz should not produce any errors.
Only if you bandwidth limit the output. In this case a frame blending video shader would do the trick.
- kaoD 4y agoI'm not even sure if Nyquist applies here since the GIF is already a non-continuous function and therefore has potentially infinite frequency components. The input itself is not band-limited. Another way to put this is that a GIF is already a sampled function. For example imagine intensity of each pixel in a particular GIF is a function sin(x * t). Nyquist just says you can only accurately reconstruct this for 25px wide GIFs at 50FPS without aliasing. And as you pointed, you'd still have to bandlimit the output.
- babypuncher 4y agoFrame blending can help make judder less obvious but it is far from an ideal solution. Modern TVs do some clever work to detect 24 fps content in a 60hz signal, extract it, and present it properly to the panel. This takes a fair amount of processing power, and it isn't really feasible on computing platforms where the video content is not always presented full screen.
- rasz 4y agoIsnt that just motion interpolation on 120Hz panels?