| 摘要 |
<p>The invention provides a method for trick mode playback of an MPEG video presentation recorded on a storage medium (106). In response to a command requesting a trick mode playback for a portion of the MPEG video presentation, an information file (400) for the video presentation can be accessed. Information for performing the requested trick mode command can be retrieved from the information file (400). The retrieved information can include parameters identifying at least a location of an I-picture for the playback portion of the video presentation from the information file. A picture flag (565) identifying a picture as a progressive or non-progressive picture can also be retrieved from the information file. A parameter (540) in the information file (400) can also define the number of bytes contained in a GOP for the playback portion of the video presentation. The information in the information file (400) can be used to facilitate fast forward and reverse trick mode playback.</p> |
