You can actually calculate the length of the audio using these two numbers. Convert to kilobits: Divide by bitrate:
Your file is approximately 4 minutes and 9 seconds long. Why Use This Specific Format? 128kbps m4a(3.89 MB)
This stands for "kilobits per second." It represents the amount of data processed per second of audio. At 128kbps, the audio is considered "standard quality"—perfect for mobile listening and streaming. It strikes a balance between sounding clear and keeping the file size small. You can actually calculate the length of the