video-analyzer - An AI video analysis tool that extracts keyframes from videos and generates detailed video descriptions.

What is a video analyst?

Video-analyzer is an open-source video analytics tool that combines Llama's 11B vision model and OpenAI's Whisper model to extract keyframes from videos, transcribe audio content, and generate detailed video descriptions. The tool supports fully local operation without cloud services or API keys, or can utilize OpenRouter's LLM service to improve processing speed and scalability. Video-analyzer enables users to perform in-depth analysis of video content and can be applied to various scenarios, including surveillance, advertising analysis, and content classification.

Main functions of video-analyzer

• Local video analytics: Process video in a local environment without cloud services or API keys.
• Keyframe extractionIntelligently extracts keyframes from video.
• Audio transcriptionHigh-quality audio transcription using OpenAI's Whisper model.
• Natural Language Description: A detailed description of the generated video content.
• Audio processingAutomatically process low-quality audio.

The technical principles of video-analyzer

• Frame extraction and audio processing:
  • Extracting keyframes from video using the OpenCV library.
  • The Whisper model processes audio, performs transcription, and handles low-quality audio.
• Frame Analysis:
  • The Llama-based 11B vision model is used to analyze each keyframe and extract visual information.
  • When analyzing, consider the context of the previous frame to maintain the continuity of the video content.
• Video reconstruction:
  • The frame analysis results are combined in chronological order to form a frame-by-frame description of the video.
  • Integrate audio transcription content and use the first frame of the video to set the scene background.
  • Create a comprehensive video description, including visual and audio information.

The video-analyzer project address

• GitHub repository:https://github.com/byjlw/video-analyzer

Application scenarios of video-analyzer

• Content moderationIt automatically analyzes video content to help content moderation teams quickly identify and handle inappropriate content.
• Video content managementGenerate metadata and descriptions for the video library to facilitate content retrieval and management.
• Education and trainingIt analyzes educational video content and automatically generates course summaries and key points to assist teaching.
• Security monitoringAnalyze surveillance video to identify abnormal behavior or events and improve security response speed.
• Media and EntertainmentIt can automatically generate script summaries for movies and TV shows to assist in editing and post-production.