Video annotation tool

Open-source video annotation tool for frame-accurate labeling of video datasets, targeting AI researchers, data teams, and robotics developers.

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About This Tool

The tool enables researchers to label objects in video frames using bounding boxes, polygons, or polylines, with support for frame-level tracking and short-term propagation. It operates offline on local data, enabling privacy and reproducibility. Its open-source nature allows custom exporters and plugin extensions, reducing vendor lock-in.
Conceptually, users ingest a video, define a labeling schema, and annotate frames through an editable canvas that records spatial annotations and temporal associations. Annotations can be exported to standard datasets such as COCO, YOLO, or Pascal VOC, enabling seamless integration with ML pipelines. It emphasizes data integrity through unique IDs, coordinate validation, and format-conformant outputs.
Who benefits: AI researchers, data-labeling teams, robotics engineers, and video analytics practitioners who require transparent tooling, reproducible results, and control over data handling. Unique value lies in its open-source core, extensible exporters, offline operation, and support for multi-type annotations with tracking across frames. Core features include robust schema management, multiple annotation types, quality checks, and standard-format exports. Typical use cases cover surveillance labeling, autonomous systems dataset creation, and media analytics experiments.
Use cases span initial labeling, iterative model training, and dataset auditing, where traceability and reproducibility are essential.

How to Use

  1. Provide inputs: Upload or point to the video source, define label names, and choose export format.
  2. Configure schema: Set up bounding boxes, polygons, or tracking rules; specify frame sampling if needed.
  3. Annotate frames: Draw annotations on frames, assign labels, and link related frames for tracking.
  4. Validate and export: Run basic checks and export to COCO/YOLO formats with optional metadata.
  5. Review outputs: Inspect the exported files for completeness and consistency before integration.
How to use video annotation tool open source

Frequently Asked Questions

Find Quick Answers

Is this tool truly open source?
Yes. The core software and exporters are released under an OSI-compliant license, with source code available for inspection, modification, and distribution by teams and individuals.
Which export formats are supported?
Exports include COCO, YOLO, and Pascal VOC formats, with label mappings and coordinate conventions aligned to each schema; plugins can extend formats where needed.
Can it run offline and locally?
Yes. All video processing, labeling, and export occur on local machines without mandatory cloud processing, supporting data privacy and policy compliance.
Does it support collaboration?
Project-level collaboration is possible via local repositories and optional cloud-sync plugins; users can share annotations, merge changes, and track version history with setup considerations.

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