AI Video Editor proofcut for Claude Code Released

Developer tydude001 has released proofcut, a video editing tool developed alongside Claude Code. It is an MCP server and Claude Code plugin that allows Claude to perform editing based on transcription text when users input recordings and goals.

Key Features and How It Works

• Automatic Editing: Analyzes transcription text to remove unnecessary speech or mistakes, places appropriate B-roll, and adds subtitles and background music.
• Self-Verification: Re-transcribes edited files to compare with the original text and checks for errors by comparing frame counts with the timeline.
• Installation: Can be installed with two command lines in Claude Code, running locally without separate accounts or API keys.

Development Process and Technical Insights

Out of a total of 627 commits, 603 were co-authored with Claude Code. The developer handled direction setting and final review, while Claude performed code writing, testing, and design note generation.

• Overcoming Whisper Limitations: To resolve the issue where Whisper processes repeated speech with a single timestamp, accuracy was improved by using a 'hear tool' where Claude listens to the segment 5 times. In a 96-second test, it passed 9/9 verifications at a cost of 914 seconds and $6.94.
• Token Efficiency: Loading all 109 tools consumes 92K tokens, but using ToolSearch reduces this to 9K tokens. Tool descriptions are limited to within 2KB.
• Image Analysis Utilization: Returns video contact sheets as images so that Claude can view screen content and select B-roll.