function BitRateBPS() being specified in Equation G-370. The average bit rate is derived according to the access unit removal time specified in Annex C of this Recommendation | International Standard. In the following, bTotal is the number of bits in all NAL units of the current priority layer representation, t1 is the removal time (in seconds) of the access unit associated with the scalability information SEI message, and t2 is the removal time (in seconds) of the last access unit (in decoding order) of the target access unit set. With X specifying the value of pr_avg_bitrate[ the following applies: If t1 is not equal to t2, the condition specified in Equation G-371 shall be fulfilled. Otherwise (t1 is equal to t2), the condition specified in Equation G-372 shall be fulfilled. pr_max_bitrate[i][j] indicates an upper bound for the bit rate of the current priority layer representation in any one-second time window of access unit removal time as specified in Annex C. The upper bound for the bit rate of the current priority layer representation in bits per second is given by BitRateBPS(pr_max_bitrate[i]| with the function BitRateBPS() being specified in Equation G-370. The bit rate values are derived according to the access unit removal time specified in Annex C of this Recommendation International Standard. In the following, t is any point in time (in seconds), t2 is set equal to t1 + 1, and bTotal is the number of bits in all NAL units of the current priority layer representation that belong to access units with a removal time greater than or equal to t and less than t2. With X specifying the value of pr_max_bitrate[ i I[. ], the condition specified in Equation G-373 shall be obeyed. priority_id_setting_uri[PriorityIdSettingUrildx ] is the PriorityIdSettingUrildx-th byte of a null-terminated string encoded in UTF-8 characters, specifying the universal resource identifier (URI) of the description of the method used to calculate the priority_id values in the NAL unit headers for the target access unit set. G.13.2.2 