SuperMap iServer can quickly publish video dataset as REST-Data Service and REST-Video Stream Service, and provides a series of resources to support the functions of video dataset management, query and video file streaming, so as to meet the requirements of publishing the video datasets created by SuperMap iDesktopX and used by SuperMap iClient. Meet the needs of the whole process of video data visualization.

Use the Data Service

SuperMap iServer uses REST-Data Service to manage and query video data. At present, data service supports viewing, deleting, and modifying video datasets and video features, and supports query modes such as BOUNDS, SQL, and ID.

Application scenario

You can obtain the specified video in the video dataset through the query for loading in the client such as SuperMap iClient, which is suitable for the scene where the video is delivered on demand according to the attributes such as the specified spatial bound or the specified time.

Operation steps

You can use the REST-Data Service with video datasets through the REST API. For specific methods, please refer to features, feature and featureResults.

Precautions

• The REST-Data Service currently only supports the modification of the description and projected coordinate system of the video dataset and the video address (Address) and video name (Name) of the video feature, where video address is the address used by clients such as SuperMap iClient to get the video stream when the video is loaded.

Use the Video Stream Service

SuperMap iServer supports publishing the video dataset imported with local video files as REST-Video Stream Service, so that SuperMap iClient can load online video streams.

At present, SuperMap iServer only supports streaming video files in *.mp4 format to Online video streams in HLS(m3u8) protocol. The online video stream access address is:
http://{ip}:{port}/iserver/services/{videoStreamServiceName}/hls/stream/{datasetName}/{videoFeatureId}/{videoStreamName}

Among,

• videoStreamServiceName: The video stream service name configured for the service publishing procedure
• datasetName: Video dataset name, iServer provides a default value, and the naming rule is "{Datasource Name-Dataset Name}"
• videoFeatureId: video feature ID, that is, SMID
• videoStreamName: video stream name, which is the file name of index.m3u8 or *.ts file when the video stream is HLS protocol.

Precautions

• After successfully publishing a REST-Video Stream Service, a corresponding video stream will be generated index.m3u8 stream file locally for each video element in the HLS folder at the same level as the video file used to publish this service, with the file path of /HLS/stream/{Datasource Name-Dataset Name-SMID}

Related topics

• Prepare the video data
• Publish Video Service
• features、feature、featureResults
• Method for processing video file as stream failure