Dynamically updating quality to higher chroma sampling rate

In a computer system that implements a video encoder system, a method comprising:

• packing sample values of an input picture organized according to an input picture format into first and second coded pictures organized according to first and second coded picture formats, respectively, the first coded picture containing sample values for a low chroma resolution version of the input picture, and the second coded picture containing sample values for high chroma resolution details of the input picture;
• encoding the first and second coded pictures to produce encoded data, including, for each of multiple regions of the first and second coded pictures:
• evaluating one or more attributes of the region;
• and
• based at least in part on results of the evaluating, determining whether or not to encode sample values in the region for the high chroma resolution details of the input picture as part of the second coded picture;
• selectively encoding, or skipping encoding of, the sample values in the region for the high chroma resolution details of the input picture as part of the second coded picture;
• and
• outputting the encoded data.

One or more computer-readable media storing computer-executable instructions for causing a computer system, when programmed thereby, to perform video processing, the one or more computer-readable media being selected from the group consisting of non-volatile memory, magnetic disk, and optical storage media, the video processing comprising:

• packing sample values of an input picture organized according to an input picture format into first and second coded pictures organized according to first and second coded picture formats, respectively, the first coded picture containing sample values for a low chroma resolution version of the input picture, and the second coded picture containing sample values for high chroma resolution details of the input picture;
• encoding the first and second coded pictures to produce encoded data, including, for each of multiple regions of the first and second coded pictures:
• evaluating one or more attributes of the region;
• and
• based at least in part on results of the evaluating, determining whether or not to encode sample values in the region for the high chroma resolution details of the input picture as part of the second coded picture;
• selectively encoding, or skipping encoding of, the sample values in the region for the high chroma resolution details of the input picture as part of the second coded picture;
• and
• outputting the encoded data.