Source optimized dynamic trickplay

• US 20080187283A1
• Filed: 12/28/2007
• Published: 08/07/2008
• Est. Priority Date: 12/29/2006
• Status: Active Grant

• Current Assignee: Bison Patent Licensing, LLC
• Original Assignee: Broadband Royalty Corporation (CommScope Holding Company, Inc.)
• Inventors: Takahashi, Eduardo S.C.
• Granted Patent: US 8,693,849 B2
• Time in Patent Office: Days
• US Class Current: 386/68
• CPC Class Codes: G11B 2220/415 Redundant array of inexpensive disks [RAID] systems
• CPC Class Codes: G11B 27/005 Reproducing at a different information rate from the information rate of recording for television signals H04N5/783
• CPC Class Codes: H04N 21/21815 comprising local storage units
• CPC Class Codes: H04N 21/234 Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
• CPC Class Codes: H04N 21/234363 by altering the spatial resolution, e.g. for clients with a lower screen resolution
• CPC Class Codes: H04N 21/266 Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
• CPC Class Codes: H04N 21/2662 Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/6587 Control parameters, e.g. trick play commands, viewpoint selection
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 5/783 Adaptations for reproducing at a rate different from the recording rate
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 7/17318 Direct or substantially direct transmission and handling of requests

Abstract

At least one trickplay source file is generated from original media content. Trickplay view files for rendering particular trickplay view rates are then generated from the trickplay source file.

Claims

1. A method comprising:

generating at least one trickplay source file from original media content; and

generating trickplay view files for rendering particular trickplay view rates from the trickplay source file.

2. The method of claim 1, wherein generating at least one trickplay source file from original media content further comprises:

generating at least one trickplay source file excluding one or more of audio, close-captioning, and subtitles of the original media content.

3. The method of claim 1, wherein generating at least one trickplay source file from original media content further comprises:

generating at least one trickplay source file comprising only I-Frames of the original media content.

4. The method of claim 1, wherein generating at least one trickplay source file of original media content further comprises:

generating the at least one trickplay source file from the original media content prior to streaming the original media content.

5. The method of claim 1, wherein generating trickplay view files for rendering particular trickplay view rates from the trickplay source file further comprises:

generating the trickplay view files dynamically, as the original media content is being streamed.

6. The method of claim 1, wherein generating at least one trickplay source file from of original media content further comprises:

generating a single trickplay source file comprising needed to render a minimum trickplay rate.

7. The method of claim 1, further comprising:

generating a single tag file for multiple trickplay rates, the tag file comprising tags that reference I-frames in the trickplay source file.