类：MediaInformation
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最后更新时间 (UTC)：2025-07-25。
[null,null,["最后更新时间 (UTC)：2025-07-25。"],[[["\u003cp\u003e\u003ccode\u003eMediaInformation\u003c/code\u003e objects represent media content and metadata like title, duration, content URL, and stream type.\u003c/p\u003e\n"],["\u003cp\u003eThey include details about ad breaks, text tracks, user actions (like/dislike), and custom application-specific data.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003econtentId\u003c/code\u003e or \u003ccode\u003econtentUrl\u003c/code\u003e property identifies the media, while \u003ccode\u003emetadata\u003c/code\u003e holds descriptive information.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003estreamType\u003c/code\u003e distinguishes between buffered, live, or other stream types, with \u003ccode\u003eduration\u003c/code\u003e applying to buffered content.\u003c/p\u003e\n"],["\u003cp\u003eFor live streams, \u003ccode\u003estartAbsoluteTime\u003c/code\u003e provides the Epoch time of the event or seekable range start.\u003c/p\u003e\n"]]],["`MediaInformation` represents details about media content. Key properties include `contentId` and `contentUrl` for the media's location, and `contentType` specifying its MIME type. It holds `breaks` and `breakClips` for ad breaks, `duration` for the media's length, and `streamType` indicating live or other formats. `metadata` provides media details. Optional properties like `tracks`, `textTrackStyle`, `userActionStates`, `vmapAdsRequest` and `customData` are also available.\n"],null,["# Class: MediaInformation\n\ncast.[framework](/cast/docs/reference/web_receiver/cast.framework).[messages](/cast/docs/reference/web_receiver/cast.framework.messages).MediaInformation\n=========================================================================================================================================================\n\nclass static\n\nRepresents the media information.\n\nConstructor\n-----------\n\n### MediaInformation\n\nnew\nMediaInformation()\n\nProperties\n----------\n\n### breakClips\n\n(non-null Array of non-null [cast.framework.messages.BreakClip](/cast/docs/reference/web_receiver/cast.framework.messages.BreakClip) or undefined)\n\nA partial list of break clips that includes the currently-playing break\nclip as well as some of the following clips.\nThe reason for sending a partial list instead of the complete list is to\navoid generating an overflow of `MediaStatus` messages.\n\n### breaks\n\n(non-null Array of non-null [cast.framework.messages.Break](/cast/docs/reference/web_receiver/cast.framework.messages.Break) or undefined)\n\nList of breaks.\n\n### contentId\n\nstring\n\nTypically the URL of the media.\n\n### contentType\n\nstring\n\nThe content MIME type.\n\n### contentUrl\n\n(string or undefined)\n\nOptional media URL, to allow using `contentId` for the actual ID.\nIf `contentUrl` is provided, it is used as the media URL, otherwise\nthe `contentId` is used as the media URL.\n\n### customData\n\n(non-null Object or undefined)\n\nApplication-specific media information.\n\n### duration\n\n(number or undefined)\n\nThe media duration. Set to `-1` if `streamType` is set to `LIVE`.\n\n### entity\n\n(string or undefined)\n\nOptional Google Assistant deep link to a media entity.\n\n### hlsSegmentFormat\n\n(non-null [cast.framework.messages.HlsSegmentFormat](/cast/docs/reference/web_receiver/cast.framework.messages#.HlsSegmentFormat) or undefined)\n\nThe format of the HLS audio segment. Only required for HLS content\nplayback using MPL.\n\n### hlsVideoSegmentFormat\n\n(non-null [cast.framework.messages.HlsVideoSegmentFormat](/cast/docs/reference/web_receiver/cast.framework.messages#.HlsVideoSegmentFormat) or undefined)\n\nThe format of the HLS video segment. Only required for HLS content\nplayback using MPL.\n\n### mediaCategory\n\n(non-null [cast.framework.messages.MediaCategory](/cast/docs/reference/web_receiver/cast.framework.messages#.MediaCategory) or undefined)\n\nThe media category (audio, video, picture).\n\n### metadata\n\n(non-null [cast.framework.messages.MediaMetadata](/cast/docs/reference/web_receiver/cast.framework.messages.MediaMetadata), non-null Object, or undefined)\n\nThe media metadata.\n\n### startAbsoluteTime\n\n(number or undefined)\n\nProvides the absolute time (Epoch Unix time in seconds) for live streams.\nFor a live event, it is the time the event started, otherwise\nit is the start of the seekable range when the streaming started.\n\n### streamType\n\nnon-null [cast.framework.messages.StreamType](/cast/docs/reference/web_receiver/cast.framework.messages#.StreamType)\n\nThe stream type.\n\n### textTrackStyle\n\n(non-null [cast.framework.messages.TextTrackStyle](/cast/docs/reference/web_receiver/cast.framework.messages.TextTrackStyle) or undefined)\n\nThe style of text track.\n\n### tracks\n\n(non-null Array of non-null [cast.framework.messages.Track](/cast/docs/reference/web_receiver/cast.framework.messages.Track) or undefined)\n\nThe media tracks.\n\n### userActionStates\n\n(non-null Array of non-null [cast.framework.messages.UserActionState](/cast/docs/reference/web_receiver/cast.framework.messages.UserActionState) or undefined)\n\nIndicates the user action state for media.\nIndicate user like, dislike, or follow actions for the media.\n\n### vmapAdsRequest\n\n(non-null [cast.framework.messages.VastAdsRequest](/cast/docs/reference/web_receiver/cast.framework.messages.VastAdsRequest) or undefined)\n\nVMAP ad request configuration.\nUsed if breaks and breakClips are not provided.\nThis field is not included in MediaStatus messages to avoid overflow."]]
