Yes, it makes sense to record a higher resolution video, so you can crop part of it in postprocessing without quality loss to avoid upscaling the cropped part.īut you need to actually record this high resolution. Recording movie-like footage, outdoor with plants and such (doesn't matter if real or computer generated), will not show as much blur during rescaling, so you need to look yourself how much rescaling affects the quality of your video. Recording windows desktop apps with much text and thin lines, the above is true. However, what you should do depends on the actual video content. You get the sharpest image, if the original pixels are exactly 1:1 the same pixels as in the video, so source size = video size. Using a 4k source downscaled to 1080p is not sharper than original 1080p - it will also have some blurriness due to the downscaling algorithm. If you have a too small source, it's better to record the smaller resolution to the video and let the media player upscale on the fly during playback - in this case, there are no compression artefacts from the upscaling process. Upscaling is to be avoided if possible, because it adds no picture information but bloats the video. This results in exactly the captured pixels.ĭownscaling is required if you cannot have your high resolution source in the same (lower) resolution as your video. So if you want a 1080p video, your source should be 1080p. Any kind of scaling is making the video somewhat blurry, because with downscaling multiple pixels need to be combined to one pixel, or with upscaling multiple pixels need to be extrapolated to create a new pixel.
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