Active Storage Video Analyzer

Extracts the following from a video blob:

• Width (pixels)

• Height (pixels)

• Duration (seconds)

• Angle (degrees)

• Display aspect ratio

• Audio (true if file has an audio channel, false if not)

• Video (true if file has an video channel, false if not)

Example:

ActiveStorage::Analyzer::VideoAnalyzer.new(blob).metadata # => { width: 640.0, height: 480.0, duration: 5.0, angle: 0, display_aspect_ratio: [4, 3], audio: true, video: true } 

When a video’s angle is 90, -90, 270 or -270 degrees, its width and height are automatically swapped for convenience.

This analyzer requires the FFmpeg system library, which is not provided by Rails.