| 主权项 |
1. A method of providing promotion content with media content, comprising:
at a server system having one or more processors and memory storing program modules to be executed by the one or more processors:
providing, to a client device, the media content and a sequence of closed caption (CC) messages that are synchronized with the media content, wherein at least two consecutive CC messages of the CC message sequence are separated by a blank duration, and the blank duration is marked by a blank mark and lasts for a predetermined length of time;receiving, from the client device, a request for promotion content, the promotion content request at least including a user identification in accordance with detecting the blank mark associated with the media content, the user identification identifying a user of the client device;determining a plurality of user preferences associated with the received user identification;determining one or more promotion content items according to the plurality of user preferences; andproviding the one or more promotion content items to the client device, wherein the one or more promotion content items are configured to be concurrently displayed with the media content during the blank duration between the at least two consecutive CC messages. |
