I have been working on video conversion. So, to find out video parameters I used ffprobe. However, when I run the command on an mp4 video file, I observe this:
Total bitrate: 3547 Kb/s Video bitrate: 3512 Kb/s Audio bitrate: 32 Kb/s
Why total bitrate is 3 Kb/s more than the sum of audio and video bitrates?