OptionalaltA string providing the alternate text for the media.
OptionalcaptionA caption describing the media. This can contain a field name enclosed in
{}, such as {IMAGE_CAPTION}.
OptionalrefreshRefresh interval of the layer in minutes. Non-zero value indicates automatic layer refresh at the specified interval. Value of 0 indicates auto refresh is not enabled. If the property does not exist, it's equivalent to having a value of 0. Only applicable when type is set to image.
OptionaltitleA title for the media. This can contain a field name enclosed in {},
such as {IMAGE_TITLE}.
OptionaltypeDefines the type of media. One of the MediaJsonType constants.
OptionalvalueContains information about how the image should be retrieved or how the chart should be constructed.
Defines an image or a chart to be displayed in a pop-up window. See https://developers.arcgis.com/web-map-specification/objects/mediaInfo/ and https://developers.arcgis.com/web-scene-specification/objects/mediaInfo/.