Method and device for coding poc, method and device for decoding poc, and electronic equipment

A method for coding Picture Order Count (POC), comprising:

• acquiring a POC value of a current picture, wherein the POC value of the current picture is used in executing a POC alignment operation;
• mapping a Most Significant Bit (MSB) value and a Least Significant Bit (LSB) value of the POC value to parameters for MSB and LSB used during executing the POC alignment operation;
• and
• writing the parameters for MSB and LSB into a bitstream.

A device for decoding Picture Order Count (POC), comprising:

• an acquiring component, configured to acquire parameters for Most Significant Bit (MSB) and Least Significant Bit (LSB), wherein the parameters for MSB and LSB are used in an alignment operation on the POC;
• a determining component, configured to determine an MSB value and LSB value of a POC value of a current picture according to the parameters for MSB and LSB;
• and
• a calculating component, configured to calculate the POC value of the current picture according to the MSB value and the LSB value.

A device for coding Picture Order Count (POC), comprising:

• an acquiring component, configured to acquire a POC value of a current picture used in executing a POC alignment operation;
• a mapping component, configured to map a Most Significant Bit (MSB) value and a Least Significant Bit (LSB) value of the POC value to parameters for MSB and LSB used in executing the POC alignment operation;
• and
• a writing component, configured to write the parameters for MSB and LSB into a bitstream.