How to programmatically change video file duration

Issue

I have some videos converted to mp4 using a video converter. The problem is that when I play those videos, they display the wrong duration longer than their actual duration (e.g a video with duration of 30:56:12 shows a duration of 12:45:31 instead). I already know their actual duration, how do I programmatically edit a video's duration info?

Solution

I finally figured out what to do. Instead of trying to change the video duration, I decided to create a trimmed version of the video with the duration I want using ffmpeg

Answered By - Ahmadu Suleiman