/create/video

URL: http://<db.host>:<db.port>/create/video

Creates a job to generate a sequence of raster images that visualize data over a specified time.

Input Parameter Description

Name

Type

Description

attribute

string

The animated attribute to map to the video's frames. Must be present in the LAYERS specified for the visualization. This is often a time-related field but may be any numeric type.

begin

string

The start point for the video. Accepts an expression evaluable over the input parameter attribute.

duration_seconds

double

Seconds of video to produce

end

string

The end point for the video. Accepts an expression evaluable over the input parameter attribute.

frames_per_second

double

The presentation frame rate of the encoded video in frames per second.

style

string

The name of the visualize mode; should correspond to the schema used for the input parameter style_parameters field. The supported values are:

chart
raster
classbreak
contour
heatmap
labels

path

string

Fully-qualified KiFS path. Write access is required. A file must not exist at that path, unless replace_if_exists is true.

style_parameters

string

A string containing the JSON-encoded visualize request. Must correspond to the visualize mode specified in the input parameter style field.

options

map of string to strings

Optional parameters. The default value is an empty map ( {} ).

Supported Parameters (keys)	Parameter Description
ttl	Sets the TTL of the video.
window	Specified using the data-type corresponding to the input parameter attribute. For a window of size W, a video frame rendered for time t will visualize data in the interval [t-W,t]. The minimum window size is the interval between successive frames. The minimum value is the default. If a value less than the minimum value is specified, it is replaced with the minimum window size. Larger values will make changes throughout the video appear more smooth while smaller values will capture fast variations in the data.
no_error_if_exists	If true, does not return an error if the video already exists. Ignored if replace_if_exists is true. The default value is false. The supported values are: false true
replace_if_exists	If true, deletes any existing video with the same path before creating a new video. The default value is false. The supported values are: false true

Output Parameter Description

The GPUdb server embeds the endpoint response inside a standard response structure which contains status information and the actual response to the query. Here is a description of the various fields of the wrapper:

Name

Type

Description

status

String

'OK' or 'ERROR'

message

String

Empty if success or an error message

data_type

String

'create_video_response' or 'none' in case of an error

data

String

Empty string

data_str

JSON or String

This embedded JSON represents the result of the /create/video endpoint:

Name	Type	Description
job_id	long	An identifier for the created job.
path	string	Fully qualified KIFS path to the video file.
info	map of string to strings	Additional information.

Empty string in case of an error.