Systems and methods for signaling source picture timing information for temporal sublayers in video coding

A method of decoding video data, the method comprising:

• receiving a source picture timing information message;
• parsing a first syntax element in the source picture timing information message, wherein the first syntax element specifies persistence of the source picture timing information message for a current layer;
• conditionally parsing a second syntax element in the source picture timing information message only for a case where the first syntax element is equal to 1, wherein the second syntax element is a parameter related to a maximum number of temporal sublayers for which picture interval scale factor information is signalled;
• and
• parsing respective instances of a third syntax element, in the source picture timing information message, for temporal sublayers corresponding to the maximum number of temporal sublayers specified by the second syntax element, wherein the third syntax element specifies a scale factor used in determining a source picture interval of corresponding consecutive pictures in output order.