Determining quality values for blocks of encoded video

An encoder for encoding video, the encoder comprising:

• a transform block, configured to convert pixels representative of a subject block into a transformed block, based on a filtered quality value;
• and
• a pre-encoding analysis block configured to determine the quality value, by:
• determining an initial quality value for the subject block including an object;
• identifying that one or more contributing blocks that include the object present in the subject block, wherein the one or more contributing blocks including the object are from one or more frames;
• identifying one or more quality values associated with the one or more contributing blocks including the object;
• and
• determining the filtered quality value for the subject block based on the determined initial quality value and the one or more quality values associated with the one or more contributing blocks,
• wherein determining the filtered quality value includes determining a characteristic quality value that is characteristic of quality values of the one or more contributing blocks including the object and adjusting the initial quality value for the subject block towards the characteristic quality value.

A non-transitory computer-readable medium storing instructions that, when executed by a processor, cause the processor to encode video by:

• determining an initial quality value for a subject block including an object;
• identifying that one or more contributing blocks that include the object present in the subject block, wherein the one or more contributing blocks including the object are from one or more frames;
• identifying one or more quality values associated with the one or more contributing blocks including the object;
• and
• determining the filtered quality value for the subject block based on the determined initial quality value and the one or more quality values associated with the one or more contributing blocks, wherein determining the filtered quality value includes determining a characteristic quality value that is characteristic of quality values of the one or more contributing blocks including the object and adjusting the initial quality value for the subject block towards the characteristic quality value.