 
 <prompt> Wetin codecs dey do? Given di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: "Latency dey come from di methods wey dem use encode and decode di data. Some codecs fit analyze longer segment of di data to optimize efficiency, and den code am for a way wey go need larger segment of data at once to decode. (Often codecs dey create segments wey dem dey call "frame" to create discrete data segments for encoding and decoding.) Di inherent latency of di coding algorithm fit dey critical; for example, when two-way transmission of data dey happen, like for telephone conversation, serious delays fit seriously spoil di perceived quality." 