Clipline is a web app for reviewing sports and training video by key moments. A coach or athlete pauses on the right frame, leaves a text or audio comment, draws markup directly on the video, and can mark a full segment for replay. Every note is tied to a timecode and collected on one timeline - so you can jump back to any moment in the review.
The product is built for people who work with video during and after training: reviewing technique, mistakes, tactical decisions, or individual match episodes. Clipline does not replace a video player - it turns watching into a structured review you can save, export, and share with someone else.
The name combines clip - a fragment or segment - and line - a line or timeline. The product helps you not just watch a recording, but capture and explain what actually matters.
Tagline: Mark the moments that matter.
Features
- Play video with playback speed control
- Scrub frame by frame and jump ±5 seconds
- Jump to a moment from the timeline or a note
- Create notes tied to a timecode
- Write text comments for each note
- Record voice (audio) comments tied to a frame
- Draw on the frame: lines, arrows, circles (3 colors)
- Select a time range and loop its playback
- Automatically save a frame preview when creating a note
- Browse all notes on a timeline with markers and thumbnails
- Cloud storage and sharing of reviews between coach and athlete
- Support for multiple collections
- Ability to grant access to a collection
- Ability for a user to send video to a coach for review
- Mobile-friendly viewing on a phone
Stack
- Backend (Python)
- Fast API
- LangFlow
- LiteLLM
- PostgreSQL
- Redis
- MinIO
- Frontend (JS)
- NextJS
- Media
- FFmpeg
- Infra
- Docker