Splice signalling buffer characteristics
First Claim
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1. A method, comprising:
- receiving a transport stream comprising a head stream and a tail stream, the head stream and the tail stream each comprising a compressed video sequence from a separate video source;
processing an adaptation field of a transport packet corresponding to the head stream, the adaptation field comprising a splice out-point that corresponds to a splice point, the splice point provided based on a presentation time stamp value, the splice out-point signaled by a descriptor in a program map table, the transport packet further comprising assistive information comprising one or more compressed picture buffer properties and one or more decoded picture buffer properties; and
concatenating the head stream and the tail stream based on the compressed picture buffer properties and the decoded picture buffer properties, wherein the compressed picture buffer properties comprise at least a coding level, wherein the compressed picture buffer properties further comprise one or more of a value corresponding to a decoded time stamp value minus a system time clock value, a buffer level, and an intended compressed picture buffer upper bound level and compressed picture buffer lower bound level, wherein the decoded picture buffer properties comprise a first flag corresponding to a presentation time stamp value corresponding to a last picture in the decoded picture buffer, wherein the decoded picture buffer properties further comprise a second flag, the second flag signaling that all pictures yet to be output residing in the decoded picture buffer have successive picture output times, wherein the second flag further signals a first output time of the pictures yet to be output, and wherein the first output time corresponds to a first frame interval after the splice out-point, the first frame interval enabling pictures from the headstream to be outputted in the decoded picture buffer while pictures from the tail stream are being decoded and stored in the decoded picture buffer.
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Abstract
In one method embodiments, providing a transport stream to a client device, the transport stream comprising a head stream and a tail stream, the head stream and the tail stream each comprising a compressed video sequence; providing information in a transport stream packet associated with the head stream, the information configured to cause the client device to selectively control an output of at least one of a plurality of pictures of the head stream yet to be output from a decoded picture buffer (DPB) at an out-point from the head stream to the trail stream.
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Citations
18 Claims
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1. A method, comprising:
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receiving a transport stream comprising a head stream and a tail stream, the head stream and the tail stream each comprising a compressed video sequence from a separate video source; processing an adaptation field of a transport packet corresponding to the head stream, the adaptation field comprising a splice out-point that corresponds to a splice point, the splice point provided based on a presentation time stamp value, the splice out-point signaled by a descriptor in a program map table, the transport packet further comprising assistive information comprising one or more compressed picture buffer properties and one or more decoded picture buffer properties; and concatenating the head stream and the tail stream based on the compressed picture buffer properties and the decoded picture buffer properties, wherein the compressed picture buffer properties comprise at least a coding level, wherein the compressed picture buffer properties further comprise one or more of a value corresponding to a decoded time stamp value minus a system time clock value, a buffer level, and an intended compressed picture buffer upper bound level and compressed picture buffer lower bound level, wherein the decoded picture buffer properties comprise a first flag corresponding to a presentation time stamp value corresponding to a last picture in the decoded picture buffer, wherein the decoded picture buffer properties further comprise a second flag, the second flag signaling that all pictures yet to be output residing in the decoded picture buffer have successive picture output times, wherein the second flag further signals a first output time of the pictures yet to be output, and wherein the first output time corresponds to a first frame interval after the splice out-point, the first frame interval enabling pictures from the headstream to be outputted in the decoded picture buffer while pictures from the tail stream are being decoded and stored in the decoded picture buffer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A digital home communications terminal, comprising:
a processor configured to; receive an adaptation field of a transport stream packet corresponding to a head stream a splice out-point that corresponds to a provided splice point, the splice point provided based on a presentation time stamp value, the splice out-point signaled by a descriptor in a program map table; receive a compressed picture buffer property corresponding to a coding level of the transport stream packet; and receive decoded picture buffer properties comprising a first flag corresponding to a last presentation time stamp value corresponding to a last picture in the decoded picture buffer, and a second flag signaling that all of the plurality of pictures yet to be output residing in the decoded picture buffer have successive picture output times, wherein the compressed picture buffer properties further comprise one or more of a value corresponding to a decoded time stamp value minus a system time clock value, a buffer level, and an intended compressed picture buffer upper bound level and compressed picture buffer lower bound level, wherein the second flag further signals a first output time of the pictures yet to be output, wherein the first output time corresponds to a first frame interval after the splice out-point, the first frame interval enabling pictures from the headstream to be outputted in the decoded picture buffer while pictures from the tail stream are being decoded and stored in the decoded picture buffer. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A client device, comprising:
a processor configured to; receive a transport stream comprising a head stream and a tail stream, the head stream and the tail stream each comprising a compressed video sequence from a separate video source; and process an adaptation field of a transport packet corresponding to the head stream a splice out-point that corresponds to a splice point, the splice point provided based on a presentation time stamp value, the splice out-point signaled by a descriptor in a program map table, the transport packet further comprising assistive information comprising one or more compressed picture buffer properties and one or more decoded picture buffer properties; and concatenate the head stream and the tail stream based on the compressed picture buffer properties and the decoded picture buffer properties, wherein the compressed picture buffer properties comprise at least a coding level, wherein the compressed picture buffer properties further comprise one or more of a value corresponding to a decoded time stamp value minus a system time clock value, a buffer level, and an intended compressed picture buffer upper bound level and compressed picture buffer lower bound level, wherein the decoded picture buffer properties comprise a first flag corresponding to a presentation time stamp value corresponding to a last picture in the decoded picture buffer, wherein the decoded picture buffer properties further comprise a second flag, the second flag signaling that all pictures yet to be output residing in the decoded picture buffer have successive picture output times, wherein the second flag further signals a first output time of the pictures yet to be output, and wherein the first output time corresponds to a first frame interval after the splice out-point, the first frame interval enabling pictures from the headstream to be outputted in the decoded picture buffer while pictures from the tail stream are being decoded and stored in the decoded picture buffer.
Specification