Splicing a video (or dividing a video into multiple segments) is a common way to break large files into smaller parts. This is commonly found in streaming but can also be used to break up a video into smaller clips.
Here is a basic example where the input is a 20 second clip with the desired result of multiple 5 second segments:
$ ffmpeg -i input.mp4 -c copy -f segment -segment_time 00:00:05 -reset_timestamps 1 output_%02d.mp4
Naturally, it is expected that each clip is 5 seconds long. Unfortunately, -segment_time is not always accurate and takes the time value as a recommendation.
The FFmpeg documentation states using -force_key_frames is one way to force each cut length but by frames not duration.
segment_time Indicates the segment duration to time (default value 2) -reset_timestamps Indicates requiring each segment to begin with a near-zero timestamp which is useful for when each segment must have playback (optional)
Challenge: How would you do this with an audio file instead?