Synchronizing media data used in authoring a Blu-ray disc (BD) comprising: receiving a discontinuous input timecode associated with at least one stream of the media data, said discontinuous input timecode having at least one discontinuity, said at least one discontinuity having a start point and an end point; generating an output timecode that matches said discontinuous input timecode until the start point of said at least one discontinuity, and continue generating said output timecode sequentially from a timecode subsequent to the end point of said at least one discontinuity, if a user specifies a continuous output timecode; and generating an output timecode that matches said discontinuous input timecode until the start point of said at least one discontinuity, and continue generating said output timecode that matches input timecode from a timecode subsequent to the end point of said at least one discontinuity, if a user specifies a discontinuous output timecode.