Re:Depixelizing Pixel Art (2011)
by bringtheaction on Tuesday February 20, 2018 @06:16AM
(#16419480)
Here’s another one up the same alley that is interesting to watch: VHS generation loss.
> What happens if you make a copy of a copy of a copy (and so on) of a VHS tape? This experiment shows how the quality degrades with every generation.
> The copying was done using two PAL VCRs in SP mode.
> (The video is Fading like a flower by Roxette)
Thanks for the link!
This may sound crazy, but I wonder if there's a way to "automate" this deconstruction with ffmpeg...
Update: here's a one-liner that will do exactly that
ffmpeg -i input.mp4 -strict -2 -crf 51 output.mp4 && rm input.mp4 && mv output.mp4 input.mp4
For better results, run the above command ten times:
for ((n=0;n<10;n++)); do ffmpeg -i input.mp4 -strict -2 -crf 51 output.mp4 && rm input.mp4 && mv output.mp4 input.mp4; done
Theoretically, it should be possible to recompress the video back into the compressed file with no loss, provided the same codec is used, but it would be far more expensive computationally.
Here it is! https://www.youtube.com/watch?v=icruGcSsPp0