A method for initiating synchronized playback within a user interface by requesting a plurality of media data and processing the plurality of data so that the plurality of data is compatible with the user interface. A portion of the data from the plurality of data are stored in an overflow buffer while a source buffer processes the plurality of data. The method may continue by generating a metadata object to facilitate sync playback on the user interface by determining what data is in the source buffer of the user interface that needs to be removed and searching for data using a first time format that is not natively supported by the user interface and converting the first time format into a second time format that is natively supported by the user interface. The method also includes synchronizing between videos using a sync playback controller from the generated metadata object, wherein each video is represented as a sequence in the source buffer of the user interface.