Method and apparatus for decoding and encoding data

A device for decoding data corresponding to a picture or at least one video frame from a bitstream, the device comprising:

• processing circuitry configured to:
• obtain, from the bitstream, a rate control parameter that indicates a compression ratio, wherein the data corresponding to the picture or the at least one video frame has been encoded in the bitstream by an encoder model using the rate control parameter,
• obtain an asymmetric interval defined by an upper rate control threshold and a lower rate control threshold,
• clip, based on a value of the rate control parameter lying outside of a range of the asymmetric interval, the rate control parameter to obtain a clipped rate control parameter, the clipping comprising:
• if the value of the rate control parameter is greater than the upper rate control threshold, setting the clipped rate control parameter equal to the upper rate control threshold;
• and
• if the value of the rate control parameter is smaller than the lower rate control threshold, setting the clipped rate control parameter equal to the lower rate control threshold,
• wherein a first magnitude defined by i) a difference between a largest representable value of the rate control parameter and the upper rate control threshold is greater than a second magnitude defined by ii) a difference between a smallest representable value of the rate control parameter and the lower rate control threshold.

A non-transitory computer readable medium and including code instructions, which, when executed on one or more processors, cause the one or more processors to execute a method for decoding data for picture or video processing from a bitstream, the method comprising:

• obtaining, from the bitstream, a rate control parameter that indicates a compression ratio, wherein the data corresponding to the picture or the at least one video frame has been encoded in the bitstream by an encoder model using the rate control parameter;
• obtaining an asymmetric interval defined by an upper rate control threshold and a lower rate control threshold;
• clipping, based on a the value of the rate control parameter lying outside of a range of the asymmetric interval, the rate control parameter to obtain a clipped rate control parameter, the clipping comprising:
• if the value of the rate control parameter is greater than the upper rate control threshold, setting the clipped rate control parameter equal to the upper rate control threshold;
• and
• if the value of the rate control parameter is smaller than the lower rate control threshold, setting the clipped rate control parameter equal to the lower rate control threshold, wherein a first magnitude defined by a difference between a largest representable value of the rate control parameter and the upper rate control threshold is greater than a second magnitude defined by a difference between a smallest representable value of the rate control parameter and the lower rate control threshold.