Active Storage Audio Analyzer

Extracts duration (seconds), bit_rate (bits/s), sample_rate (hertz) and tags (internal metadata) from an audio blob.

Example:

ActiveStorage::Analyzer::AudioAnalyzer.new(blob).metadata
# => { duration: 5.0, bit_rate: 320340, sample_rate: 44100, tags: { encoder: "Lavc57.64", ... } }

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

Methods

Class Public methods

accept?(blob)

📝 Source code
# File activestorage/lib/active_storage/analyzer/audio_analyzer.rb, line 15
    def self.accept?(blob)
      blob.audio?
    end
🔎 See on GitHub

Instance Public methods

metadata()

📝 Source code
# File activestorage/lib/active_storage/analyzer/audio_analyzer.rb, line 19
    def metadata
      { duration: duration, bit_rate: bit_rate, sample_rate: sample_rate, tags: tags }.compact
    end
🔎 See on GitHub