#Bad Grader!!

Video (MP4, 35.1 MiB)
#How to use
- Install the Tampermonkey browser
extension
- Download, install and enable
badgrader.js
- Refresh autograder
- Click any table (warning: plays music)
#How it's made
- Step 1: download music video
- Step 2: extract frames at 10fps:
mkdir frames
ffmpeg -i [VIDEO FILE] -r 10 frames/frame%04d.png
Frames are saved to frames/frame0001.png
up to 2192.png
.
-
Step 3: run frame.py
, which
- resizes each frame to 20×20
- thresholds each pixel to one bit
- converts each row of pixels into an int (rightmost pixel is LSB)
- builds an int array out of 20 rows in a frame
- builds a 2d int array out of 2192 frames
- saves said array to
./frames.js
-
Step 4: add logic: basically the inverse of step 3, except
- each frame rewrites the entire innerHTML of the table
- frames are rendered at 100 ms intervals
- check out
badgrader.js:2192
for actual code
#Copyright notice
idk fair use or smth im not american