This is CVAT’s native annotation format, which fully supports all of CVAT’s annotation features. It is ideal for creating data backups.

For more information, see:

• Format specification
• Dataset examples

CVAT for image export

For export of images:

• Supported annotations: Bounding Boxes, Polygons, Polylines, Points, Cuboids, Skeletons, Tags, Tracks
• Attributes: Supported.
• Tracks: Supported (tracks are split by frames).

The downloaded file is a zip archive with following structure:

taskname.zip/
├── images/
|   ├── img1.png
|   └── img2.jpg
└── annotations.xml

CVAT for video export

For export of images:

• Supported annotations: Bounding Boxes, Polygons, Polylines, Points, Cuboids, Skeletons, Tags, Tracks
• Attributes: Supported.
• Tracks: Supported (tracks are split by frames).
• Shapes are exported as single-frame tracks

Downloaded file is a zip archive with following structure:

taskname.zip/
├── images/
|   ├── frame_000000.png
|   └── frame_000001.png
└── annotations.xml

CVAT loader

Uploaded file: either an XML file or a .zip file containing the aforementioned structures.