MP4box -split issue, last part is broken, frozen black frame

[avtor2]

I couldn't find any similar issues. I'm using the latest version of GPAC. The duration of my video file is 38 seconds. I want to split it into 15-second parts. However, the last file is always broken: there is a frozen black frame for 5 seconds and after that 3 seconds normal video. But the audio is fine.

Here's the command I'm using:
MP4Box -split 15 1a088153e.mp4

Input file.
Output video parts.

Other videos have different durations, but I always need the segments to be less than 15 seconds. How can I achieve this?