Rate adaptation method and apparatus

A rate adaptation method, comprising:

• obtaining a first code block stream having a first code block, at least two rate adaptation code blocks, and a second code block that are adjacent to each other;
• determining whether a code block relationship between the first code block and the second code block meets a preset condition;
• and
• when the code block relationship between the first code block and the second code block does not meet the preset condition and a rate adaptation requirement exists, deleting at least one rate adaptation code block in the at least two rate adaptation code blocks, so that at least one rate adaptation code block is included between the first code block and the second code block after deletion.

A rate adaptation apparatus, comprising:

• a processor;
• and
• a memory configured to store computer readable instructions that, when executed by the processor, cause the processor to:
• obtain a first code block stream having a first code block and a second code block adjacent to each other;
• determine whether a code block relationship between the first code block and the second code block meets a preset condition;
• and
• when the code block relationship between the first code block and the second code block meets the preset condition and a rate adaptation requirement exists, insert at least one rate adaptation code block between the first code block and the second code block.