Abstract:
The multiplexing apparatus which does not make a user who watches a moving picture feel uncomfortable, the moving picture including: ( i ) a coding unit (42) for generating one or more coded streams so that no gap occurs at the connection of predetermined two access units in a process of decoding, in sequence, the two access units in all of the access units included in the coded streams; and ( ii ) a multiplexing unit (18) for multiplexing, with other information, the coded streams generated in the coding unit (42).
Abstract:
The present invention provides methods and apparatuses for processing readable content stored in a stream of data which contains samples for presenting a presentation at a plurality of views. In one embodiment, the first stream is stored and a second stream is derived from a first stream, where the second stream contains references to the first stream for use in selecting data, for an operating point within the content that includes the plurality of views, from the first stream. According to one aspect of the invention, references contained in stored second stream are accessed to transmit or store the data from the first stream.
Abstract:
There is provided a method of statistically multiplexing a plurality of input video data streams into at least one output data stream having a pre-determined capacity, comprising providing a plurality of bit rate estimates at different quality levels for each input video data stream using a look-ahead encoder, summing together the bit rate estimates of the same quality level for all input video data streams, determining the picture quality of each input video data stream at which the summed bit rate estimates is equal to or less than the output data stream pre-determined capacity. There is also provided an apparatus and system for carrying out the method, and a computer readable product carrying instructions which when executed carry out the method.
Abstract:
Methods of encoding a live video signal in a video encoding system including a plurality of video capture and encoding subsystems include providing the live video signal and an associated time code signal to the plurality of video capture and encoding subsystems, starting video capture and encoding in a first one of the subsystems at a first frame of the live video signal, starting video capture and encoding in a second one of the subsystems at a second frame of the live video signal that is later than the first frame, generating encode frame timestamps for the second frame in both the first and second video capture and encoding subsystems that are synchronized across the first and second subsystems, and associating the encode frame timestamp with the second frame in both the first and second subsystems. Related systems are also disclosed.
Abstract:
A system and method for processing multiple client flows to a single outbound link is provided. Specifically, a scheduler enforces a maximum symbol rate on the aggregate output flow. Inbound client flows are scheduled for output based upon individual quality of service parameters. For each round of scheduling, packets configured for a first bandwidth range are processed in a first pass and packets configured for a second bandwidth range are processed in a second pass. The packets are placed into frames before transmission. A comparison of the actual symbol usage with the estimated symbol is made and used to determine how to schedule inbound client flows for the second pass of the round.
Abstract:
A system and method for wirelessly transmitting audiovisual information. First audiovisual information may be encoded using a first error correction coding method. A plurality of packets may be generated, including the first audiovisual information, second audiovisual information, and control information. The second audiovisual information may be processed by a convolutional encoder without including any encoding from it, and the control information may indicate this. The plurality of packets may be wirelessly transmitted. The control information may be usable by a receiver to determine that the second audiovisual information is not encoded using the first error correction coding method, and may thereby determine that the second audiovisual information is a different service version than the first audiovisual information.
Abstract:
Provided is a steroscopic video encoding and/or decoding apparatus that supports multi-display modes, the encoding/decoding method thereof, and computer-readable recording medium for recording a program that implements the encoding/decoding method. The encoding apparatus of this research incorporates: a field separating means for separating right and left-eye input images into an odd field of the left-eye image (LO), even field of the left-eye image (LE), odd-numbered field (RO) of the right-eye image, and even-numbered field (RE) of the right-eye image; an encoding means for encoding the fields separated in the field separating means by performing motion and disparity compensation; and a multiplexing means for multiplexing the essential fields among the fields received from the encoding means, based on the user display information.
Abstract:
The invention relates to a method for allocating bit rates to video programs (14 1 , 14 2, ...14 N ) broadcasted as groups of pictures through a transmission channel (19) having a constant transmission rate, each video program (14i) being encoded through at least one encoding parameter depending on a first smoothness measure representative of quality variations between pictures currently and/ previously transmitted within said video program (14i), characterized in that the encoding parameter also depends on: - A second smoothness measure representative of quality variations between future pictures to be transmitted thereafter in the same video program, and - At least one quality standard ensuring an encoding quality for any broadcasted video program, transmitted through the channel (19), above a determined absolute and/or relative quality threshold.
Abstract:
A method for staggercasting, includes encoding a first signal representing content using encoding having successive independent decoding segments and encoding a second signal representing the content using encoding having successive independent decoding segments respectively corresponding to the independent decoding segments of the first encoded signal. A composite signal including the first and second encoded signals is generated in which the first encoded signal is delayed with respect to the second encoded signal. If an error is detected in the composite signal during a portion of an independent decoding segment of the delayed first encoded signal, then the corresponding independent decoding segment of the received second encoded signal is decoded to produce the content, otherwise, the received delayed first encoded signal is decoded to produce the content.
Abstract:
A method and system for the insertion of local signals (165), including digital media advertisements, into statistically multiplexed streams (135) is presented. The rate control (120) and timing information is computed and is used to specify the insertion time and rate parameters for digital advertisements. In one embodiment, a maximum bit rate over the advertisement duration is specified. The maximum bit rate may be constant or may vary in time, such that high bit rate portions of the advertisement are supported. High bit rate portions of the advertisements in different program streams may be staggered, such that the total bandwidth required does not exceed a maximum, but allowing for high bit rate portions of advertisements. Custom bit rate profiles for advertisements may also be defined, with the profiles being defined at a high granularity or a low granularity.