Backend Main Module

Overview

The backend module processes the video and and returns video and screenshots to the frontend for display.

Input

.mp4 video from user

Output

.webm video and screenshots of traffic violations.

Class Structure

A CompositeRuleObject, that acts like a pseudo factory method pattern, encloses all the rules, constructs their settings, and runs them. A VideoToFrame object converts the video into a list of frames, and gives it to the CompositeRuleObject, which in turn calls each object's process_rule, output_snapshots & output_processed_frames functions. The output frames are passed through a FrameToVideo object, which converts the frames into a video.