bdr-ssimu2

Encode, analyze, & plot SSIMULACRA2 scores using a source video file that is encoded with FFmpeg.

This Python script generates BD-Rate (Bjøntegaard-Delta Rate) graphs for comparing the performance of different encoding commands. It encodes a source video with various specified Constant Rate Factor (CRF) values, calculates SSIMULACRA2 scores, and plots the results via matplotlib.

Features

• Encodes a source video using two user-configurable FFmpeg commands
• Calculates SSIMULACRA2 scores (and soon XPSNR scores as well)
• Generates BD-Rate curves comparing the two encoding commands
• Outputs both average and harmonic mean SSIMULACRA2 plots
• Allows for temporal metric analysis subsampling (sampling every nth frame)

Prerequisites

• Python 3.x
• FFmpeg
• VapourSynth with:
  • VSZip Plugin
  • FFMS2
  • fmtconv
• Required Python packages:
  • vapoursynth
  • matplotlib
  • tqdm

See more in the linked Git repo's README!