VideoDiff

A program to attempt to test a video source for temporal dithering and other visual artifacts

License

GPLv2 (see LICENSE)

Warning

Documentation is incomplete and more work needs to be done

usage: videodiff.py [-h] [--fill-value FILL_VALUE]
                   [--dither-method {r,g,b,m,n}] [--display] [--output OUTPUT]
                   [--cap CAP | --file FILE]

Compare frames from a video or capture device

optional arguments:
  -h, --help            show this help message and exit
  --fill-value FILL_VALUE
                        Used with mask method, fill value for detected image
                        changes.
  --dither-method {r,g,b,m,n}, -x {r,g,b,m,n}
                        Dither detection method
  --display, -d
  --output OUTPUT, -o OUTPUT
                        Output file, must be .avi format
  --cap CAP             Index value of cv2.VideoCapture device
  --file FILE           Path to AVI file to use instead of a video device

Requirements

• Python >= 3.4
• NumPy
• OpenCV with Python bindings
• ffmpeg (need to test how library linking works)

Tested platforms

Windows x86_64

Linux x86_64 (Gentoo)

Keybindings

r: Switch to the red channel

g: Switch to the green channel

b: Switch to the blue channel

m: Switch to mask mode

a: Switch to absolute subtraction mode

p: Switch to frame-to-frame mode

c: Switch back to normal playback mode

n: Display normal image

q: Quit