Patent ID: 8737816

Claim:
A method for preparing source files for creation of a DVD in a DVD authoring system, the method comprising: identifying video content for inclusion on the DVD, wherein the video content includes first and second tracks; creating an object file, wherein the object file includes first and second navigation packs, wherein the first navigation pack is accessed during playback of the first track and wherein the second navigation pack is accessed during playback of the second track, wherein the first navigation pack associates a first control button with the first track and a second control button with the second track, wherein the second navigation pack also associates the first control button with the first track and a second control button with the second track; accepting a signal from a user input device operated by an author using the authoring system to provide a single button switching function selectable by a user upon playback of the DVD in a DVD player; automatically modifying the navigation packs in the object file so that the first navigation pack associates a particular control button with the second track and so that the second navigation pack associates the particular control button with the first track; and subsequent to the above acts, transferring the video content and the modified object file for use in creating the DVD so that at a time of playing back the DVD the first and second tracks can be selected by the particular control button, wherein an audio track associated with the first track continuously is played while playback is switched from the first track to the second track.