UpdateVideo

Updates existing Video objects that satisfy the specified constraints.

Parameters

Details

If the ref parameter is used, constraints will be ignored.

If the ref parameter is specified, it must refers to the search results of a previous FindVideo.

If the codec parameter is specified, the videos will be re-encoded. Similarly, if operations are specified, the videos will be transformed using the specified operations.

For more complex searches for objects to delete, a Find command must be used first within the transaction.

Examples

Find the videos with the “year_captured” property equal to 2007, and remove the “focal_length” property:

[ {
    "UpdateVideo": {
        "constraints": {
            "year_captured": [ "==", 2007 ],
        },
        "remove_props": [ "focal_length" ]
    }
}]

Find an video with the “year_captured” property equal to 2007, verify that only one video satisfy the constraint, update the “focal_length_mm” property, re-encode the video as H.264, and resize them to 224x224:

[ {
    "UpdateVideo": {
        "unique": true,
        "constraints": {
            "year_captured": [ "==", 2007 ],
        },
        "properties": {
            "focal_length_mm": 55
        },
        "codec": "h264",
        "operations": [
            {
                "type":   "resize",
                "width":  224,
                "height": 224
            }
        ]
    }
}]

Resize to 224x224 all the videos that are connected to an entity of the class “Dataset” and with a property “name” equal to “Youtube”:

[ {
    "FindEntity": {
        "class": "Dataset",
        "_ref":  1,
        "constraints": {
            "name": ["==", "Youtube"]
        }
    }
}, {
    "FindVideo": {
        "_ref": 2,
        "is_connected_to": {
            "ref": 1,
            "class": "in_dataset"
        },
        "blobs": false
    }
}, {
    "UpdateVideo": {
        "ref": 2,
        "operations": [
            {
                "type":   "resize",
                "width":  224,
                "height": 224
            }
        ]
    }
}]