System and method for digital multimedia stream conversion

A system comprising:

• a DVD navigation module to read program stream packets from a digital versatile disk (“DVD”) based on user inputs and navigation metadata contained on said DVD;
• a repacketizer module to extract audio and video content packetized within said program stream packets;
• a timestamp processing module to read system clock reference (“SCR”) timestamps from said program stream packets, said SCR timestamps indicating relative times at which said audio and video should be rendered, wherein at least some of said SCR timestamps are non-consecutive, said timestamp processing module to further convert said SCR timestamps to program clock reference (“PCR”) timestamps interpretable by a transport stream decoder;
• wherein said repacketizer module generates a transport stream of transport stream packets containing said audio and video content and using said PCR values to provide for decode timing at said transport stream decoder;
• and
• wherein said timestamp processing module generates a resynchronization signal causing said transport stream decoder to resynchronize with said transport stream when it receives non-consecutive PCR timestamps associated with said non-consecutive SCR timestamps.

A method for converting a program stream to a transport stream decodable by a transport stream decoder comprising:

• reading program stream packets from a digital versatile disk (“DVD”) based on user selections and navigation metadata contained on said DVD;
• extracting audio and video content packetized within said program stream packets;
• reading system clock reference (“SCR”) timestamps from said program stream packets, said SCR timestamps indicating relative times at which said audio and video should be rendered;
• determining a point within consecutively read program stream packets at which said SCR timestamps are non-consecutive;
• generating consecutive PCR timestamps corresponding to said non-consecutive SCR timestamps at said point within consecutively read program stream packets at which said SCR timestamps are non-consecutive;
• and
• generating a transport stream of transport stream packets containing said audio and video content and using said PCR timestamps to provide for decode timing at said transport stream decoder.