dvcrn Video Analyzer
Analyze video files by extracting frames at 1-second intervals using ffmpeg, then examining the frames to understand the video content.
Prerequisites
Requires ffmpeg installed on the system. Install if missing:
# Ubuntu/Debian
sudo apt-get install -y ffmpeg
# macOS
brew install ffmpeg
Usage
Extract frames from video
scripts/extract_frames.sh <video_path> [output_dir] [fps]
Arguments:
video_path(required): Path to the video fileoutput_dir(optional): Directory for extracted frames. Default: createsframes_<video_name>in current directoryfps(optional): Frames per second to extract. Default: 1 (one frame per second)
Example:
scripts/extract_frames.sh /path/to/video.mp4
scripts/extract_frames.sh /path/to/video.mp4 ./my_frames
scripts/extract_frames.sh /path/to/video.mp4 ./my_frames 2 # 2 frames per second
Output:
- Creates numbered frame images:
frame_001.jpg,frame_002.jpg, etc. - Prints video metadata (duration, resolution, frame count)
Workflow
- Run
extract_frames.shon the video file - Read key frames using the
readtool to view images - For comprehensive analysis, sample frames at regular intervals (e.g., every 5th frame)
- Describe what you see in each frame to build understanding of the video
Tips
- For short videos (<1 min): Review all frames
- For medium videos (1-5 min): Sample every 3-5 frames
- For long videos (>5 min): Sample every 10+ frames, focus on scene changes
- Look for: scene transitions, text/titles, UI elements, actions, characters