One pass video processing and composition for high-definition video

A system, comprising:

• a computing device;
• a graphics kernel configured for exposing application programming interfaces (APIs) of a graphics device;
• a video input stage configured for receiving a plurality of input video streams;
• a pre-processing stage implemented at least in part by the computing device and configured for establishing a frame rate converter based on input/output frame index information for the plurality of input video streams that is based on capabilities of the graphics device;
• a processing stage implemented at least in part by the computing device and configured for performing processing on the plurality of input video streams resulting in a processed plurality of input video streams, the processing including:
• de-interlacing, by the established frame rate converter, any interlaced frames of the plurality of input video streams, and
• non-linearly scaling a resolution and aspect-ratio of each of the plurality of input video streams to an output size supported by a display device;
• a mixing stage implemented at least in part by the computing device and configured for performing blending, in a single stage and by per-plane and per-pixel alpha blending, the processed plurality of input video streams resulting in an output video stream;
• a final scaling stage implemented at least in part by the computing device and configured for performing linear scaling of the output video stream to a resolution supported by the display device resulting in a scaled output video stream;
• and
• an output stage implemented at least in part by the computing device and configured for performing outputting of the scaled output video stream to the display device.

At least one computer storage device storing computer-executable instructions that, when executed by a computing device, cause the computing device to perform a method for individually processing a plurality of input video streams, the method comprising:

• receiving the plurality of input video streams;
• establishing a frame rate converter based on input/output frame index information for the plurality of input video streams that is based on capabilities of a graphics device;
• processing the plurality of input video streams resulting in a processed plurality of input video streams, the processing including:
• de-interlacing, by the established frame rate converter, any interlaced frames of the plurality of input video streams, and
• non-linearly scaling a resolution and aspect-ratio of each of the plurality of input video streams to an output size supported by a display device;
• blending, in a single stage and by per-plane and per-pixel alpha blending, the processed plurality of input video streams resulting in an output video stream;
• linearly scaling the output video stream to a resolution supported by the display device resulting in a scaled output video stream;
• and
• outputting the scaled output video stream to the display device.