Video encoding and decoding using operations constraint

A decoder for video decoding a video stream, the decoder comprising:

• one or more processors and at least one memory, wherein the video stream comprises coded data representative of a sequence of images, an indication of a profile to which coded data conform among a plurality of profiles, and an indication of a level to which coded data conform among a plurality of levels, and wherein for a current profile, a table specifies for each level quantitative constraints about a maximum normative for decoder capabilities for decoding conforming coded data, and wherein the table comprises an indication relative to a number of multiply-accumulation operations needed to decode coded data;
• wherein the one or more processors is configured to:
• determine the ability of the decoder to decode the video stream by:
• parsing the indication of the profile to which coded data conform;
• parsing the indication of the level to which coded data conform;
• in response to determining that the profile is supported by the decoder and that the level is supported by the decoder, determining that the decoder is able to implement a number of multiply-accumulation operations needed to decode coded;
• and
• in response to determining that the decoder is able to decode the video stream, decode the video stream.