Change video resolution?

Question

Video processing

Such a question recorded a video with a game monitor (1280 by 1024) SXGA resolution, converted the finished video through the program (format factory) to hd, changed the aspect ratio to 16:10, why did the quality get worse? the idea is that the quality should not deteriorate ....

Answer 1

Because almost all codecs are destructive. Plus, when resizing is especially non-multiple, distortion occurs. So any manipulation of the video is a loss of quality. Except for cut-to-length and audio track overdub