[null,null,["最后更新时间 (UTC)：2025-07-25。"],[[["\u003cp\u003e\u003ccode\u003echrome.cast.media.MediaMetadata\u003c/code\u003e is a class that represents common media metadata, used to describe media information or sections within a media container.\u003c/p\u003e\n"],["\u003cp\u003eIt includes properties like \u003ccode\u003emetadataType\u003c/code\u003e, \u003ccode\u003equeueItemId\u003c/code\u003e, \u003ccode\u003esectionDuration\u003c/code\u003e, and others to define various aspects of the media content.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eMediaMetadata\u003c/code\u003e constructor requires a \u003ccode\u003etype\u003c/code\u003e parameter specifying the type of metadata, such as movie, music track, or photo.\u003c/p\u003e\n"],["\u003cp\u003eIt has properties for specifying section start times and durations, useful for describing segments within a larger media file or live stream.\u003c/p\u003e\n"],["\u003cp\u003eWhile \u003ccode\u003etype\u003c/code\u003e property is deprecated, developers should now use the \u003ccode\u003emetadataType\u003c/code\u003e property instead for specifying the type of media.\u003c/p\u003e\n"]]],["The `MediaMetadata` class, part of `chrome.cast.media`, describes media information and sections. It is constructed with a `MetadataType`. Key properties include `metadataType` (type of metadata), `queueItemId` (relevant for container sections), `sectionDuration` (section's length), `sectionStartAbsoluteTime` (live media start time), `sectionStartTimeInContainer` (section's offset in container), and `sectionStartTimeInMedia` (section's offset in media file). `type` is deprecated in favor of `metadataType`. These properties define characteristics of media sections.\n"],null,["# Class: MediaMetadata\n\nchrome.[cast](/cast/docs/reference/web_sender/chrome.cast).[media](/cast/docs/reference/web_sender/chrome.cast.media).MediaMetadata\n===================================================================================================================================\n\nclass static\n\nCommon media metadata used as part of MediaInformation or to describe\na media section as part of the container metadata.\n\nConstructor\n-----------\n\n### MediaMetadata\n\nnew\nMediaMetadata(type)\n\n| #### Parameter ||\n|------|---------------------------------------------------------------------------------------------------------------------------------------------|\n| type | [chrome.cast.media.MetadataType](/cast/docs/reference/web_sender/chrome.cast.media#.MetadataType) Type of metadata. Value must not be null. |\n\nProperties\n----------\n\n### metadataType\n\nnon-null [chrome.cast.media.MetadataType](/cast/docs/reference/web_sender/chrome.cast.media#.MetadataType)\n\nThe type of metadata.\n\n### queueItemId\n\n(number or undefined)\n\nThe queue item that include this media section.\nOnly relevant if used in container sections, and there are multiple\nmedia items for the container.\n\n### sectionDuration\n\n(number or undefined)\n\nThe media section duration in seconds. Only needed if the metadata\ndescribes a section of the media file that has a different duration\nvalue.\n\n### sectionStartAbsoluteTime\n\n(number or undefined)\n\nAlternative way to provide section start time for live media.\nProvides start time in Epoch time in seconds.\n\n### sectionStartTimeInContainer\n\n(number or undefined)\n\nThe media section start time offset within the container in seconds.\nIf not provided it assumes it's the same as the offset witnin media.\n\n### sectionStartTimeInMedia\n\n(number or undefined)\n\nThe media section start time within media file in seconds.\nThis can be negative if a section started in previous file.\n\n### type\n\nnon-null [chrome.cast.media.MetadataType](/cast/docs/reference/web_sender/chrome.cast.media#.MetadataType)\n\nThe type of metadata.\n\nDeprecated\n: Please use metadataType instead."]]
