Method and system to improve the transport of compressed video data in real time
A variable bit rate (VBR) representation of an image sequence is segmented based on a plurality of time intervals. For each of at least two of the time intervals, the method comprises: determining which of the packets, denoted by Pp, in the VBR representation within the presently-considered time interval has a number of blocks of information per unit time greater than a baseline value; determining which of the packets, denoted by Pn, in the VBR representation within the presently-considered time interval has a number of blocks of information per unit time less than the baseline value; and creating a second representation of the image sequence in which some blocks of information Bp are removed from at least one Pp packet and interlaced with blocks of information in at least one Pn packet to produce reformatted packets.
1. A method comprising:
utilizing a processor to segment a variable bit rate representation of an image sequence into a plurality of segments, the variable bit rate representation comprising a plurality of packets of block of information; and
creating a second representation of the image sequence, wherein at least one block of information from the first segment of the plurality of segments is removed from the first segment and interlaced with the blocks of information of a second segment of the plurality of segments,
wherein the second representation of the image sequence comprises a fragment header indicating the blocks of information of the first segment of the plurality of segments interlaced with the blocks of information of the second segment of the plurality of segments.
2. The method of claim 1 , further comprising:
determining the second segment of the plurality of segments comprises more block of information than the second segment of the plurality of segments.
3. The method of claim 1 , wherein each segment of the plurality of segments spans the same time interval.
4. The method of claim 1 , wherein after creating the second representation of the image sequence, the first and second segments of the plurality of segments comprise the same number of blocks of information.
5. The method of claim 1 , further comprising:
extending the size of each segment of the plurality of segments so that after creating the second representation, each segment has a size within an upper bound.
6. The method of claim 1 , further comprising:
removing at least one frame from the image sequence so that after creating the second representation, each segment of the plurality of segments has a size within an upper bound.
7. The method of claim 1 , further comprising:
streaming the second representation of the image sequence via a communication network;
receiving the second representation of the image sequence via the communication network;
reconstructing frames of the image sequence concurrently with receiving the second representation.
8. The method of claim 7 , wherein reconstructing frames of the image sequence comprises:
storing blocks of information from the first segment interlaced with blocks of information from the second segment in a buffer; and
reconstructing frames of the image based on blocks of information stored in the buffer and blocks of information received in real time.
9. A non-transitory computer-readable storage medium comprising a set of instructions for processing a variable bit rate representation of an image sequence, the set of instructions to direct a processor to perform acts of:
segmenting a variable bit rate representation of an image sequence into a plurality of segments, the variable bit rate representation comprising a plurality of packets of block of information; and
creating a second representation of the image sequence wherein at least one block of information from a first segment of the plurality of segments is removed from the first segment and interlaced with the blocks of information of a second segment of the plurality of segments,
wherein the second representation of the image sequence comprises a fragment header indicating the blocks of information of the first segment of the plurality of segments interlaced with the blocks of information of the second segment of the plurality of segments.
10. The non-transitory computer-readable storage medium of claim 9 , further comprising a set of instructions to direct a processor to perform acts of:
determining the second segment of the plurality of segments comprises more block of information than the second segment of the plurality of segments.
11. The non-transitory computer-readable storage medium of claim 9 , wherein each segment of the plurality of segments spans the same time interval.
12. The non-transitory computer-readable storage medium of claim 9 , wherein after creating the second representation of the image sequence, the first and second segments of the plurality of segments comprise the same number of blocks of information.
13. The non-transitory computer-readable storage medium of claim 9 , further comprising a set of instructions to direct a processor to perform acts of:
extending the size of each segment of the plurality of segments so that after creating the second representation, each segment has a size within an upper bound.
14. The non-transitory computer-readable storage medium of claim 9 , further comprising a set of instructions to direct a processor to perform acts of:
removing at least one frame from the image sequence so that after creating the second representation, each segment of the plurality of segments has a size within an upper bound.
15. A system for processing a variable bit rate representation of an image sequence, the system comprising:
a processor configured to:
segment a variable bit rate representation of an image sequence into a plurality of segments, the variable bit rate representation comprising a plurality of packets of block of information; and
create a second representation of the image sequence wherein at least one block of information from a first segment of the plurality of segments is removed from the first segment and interlaced with the blocks of information of a second segment of the plurality of segments,
wherein the second representation of the image sequence comprises a fragment header indicating the blocks of information of the first segment of the plurality of segments interlaced with the blocks of information of the second segment of the plurality of segments.