Multimedia distribution system
First Claim
1. A device for processing a multimedia file, the device comprising:
- a processor; and
memory comprising a multimedia file comprising;
a series of encoded video frames;
a first index that includes information indicative of the location within the file and characteristics of a subset of the encoded video frames;
a separate second index that includes information indicative of the location within the file of information within the first index, where the first index contains a reference a specific encoded video frame that is not referenced in the second index; and
the second index being located prior to the series of encoded video frames.
7 Assignments
0 Petitions
Accused Products
Abstract
A multimedia file and methods of generating, distributing and using the multimedia file are described. Multimedia files in accordance with embodiments of the present invention can contain multiple video tracks, multiple audio tracks, multiple subtitle tracks, a complete index that can be used to locate each data chunk in each of these tracks and an abridged index that can enable the location of a subset of the data chunks in each track, data that can be used to generate a menu interface to access the contents of the file and ‘meta data’ concerning the contents of the file. Multimedia files in accordance with several embodiments of the present invention also include references to video tracks, audio tracks, subtitle tracks and ‘meta data’ external to the file. One embodiment of a multimedia file in accordance with the present invention includes a series of encoded video frames, a first index that includes information indicative of the location within the file and characteristics of each encoded video frame and a separate second index that includes information indicative of the location within the file of a subset of the encoded video frames.
144 Citations
11 Claims
-
1. A device for processing a multimedia file, the device comprising:
-
a processor; and memory comprising a multimedia file comprising; a series of encoded video frames; a first index that includes information indicative of the location within the file and characteristics of a subset of the encoded video frames; a separate second index that includes information indicative of the location within the file of information within the first index, where the first index contains a reference a specific encoded video frame that is not referenced in the second index; and the second index being located prior to the series of encoded video frames. - View Dependent Claims (2, 3, 4)
-
-
5. An encoder comprising:
-
a processor; a memory including a file containing at least one sequence of encoded video frames; wherein the processor is configured to generate a first index that references a subset of the encoded video frames in the sequence of encoded video frames and a second index that includes information indicative of the location within the file of information within the first index, where the first index contains a reference to a specific encoded video frame that is not referenced in the second index; wherein the processor is further configured to encode a multimedia file including the at least one sequence of encoded video frames, the first index, and the second index so that the second index is located within the multimedia file prior to the series of encoded video frames. - View Dependent Claims (6, 7, 8)
-
-
9. A decoder, comprising:
-
a processor; a memory containing a multimedia file; wherein the multimedia file includes; a sequence of encoded video frames; a first index that includes information indicative of the location within the file and characteristics of a subset of the encoded video frames; a second index that includes information indicative of the location within the file of information within the first index; wherein the first index contains a reference to a specific encoded video frame that is not referenced in the second index and the second index is located prior to the series of encoded video frames; wherein the processor is configured to locate a particular encoded video frame within the multimedia file using the first index and to playback the sequence of encoded video frames starting from the located encoded video frame. - View Dependent Claims (10, 11)
-
Specification