Efficient systems and methods for transmitting compressed video data having different resolutions

摘要

The present invention relates to systems and methods for combining compressed video data encoded or received with different resolutions. The present invention combines the compressed video data from the two separate bitstreams without decoding and re-encoding each bitstream. To do so, the present invention determines which compressed video bitstream has video data with a lower resolution, and applies a tiling process that alters the low resolution compressed video data such that it may be displayed at a high resolution.

主权项

1. A system for providing a bitstream including compressed video data, the system comprising:
a tiling apparatus that receives first compressed video data at a low resolution, and tiles macroblocks from the first compressed video data and macroblocks from additional compressed video data to output tiled first compressed video data such that it is displayable using a high resolution; and a combiner that receives the tiled first compressed video data displayable using the high resolution and receives second compressed video data at the high resolution, and combines the tiled first compressed video data and the second compressed video data together to provide an output bitstream including the tiled first compressed video data and the second compressed video data.