How to Split a Video for Instagram
The fastest way to split a video for Instagram is to cut it into segments on sentence boundaries and check each piece against the limits for the surface you're posting to. Here's what those limits are, and how to split so the pieces actually hold up.
Split a video for Instagram to fit the Stories ceiling
Stories are where splitting stops being optional. Meta's publishing documentation gives Stories video a maximum of 60 seconds and a minimum of 3 seconds.
That maximum does the arithmetic for you. A four-minute piece to camera is at least four segments, and probably five once you allow for cutting at sensible points rather than exactly on the minute.
There's a second limit worth knowing on the same surface: Meta documents a 100 MB maximum for Stories video. It applies per file, so splitting doesn't just divide the duration. Each resulting segment has to clear that ceiling by itself. Usually it will. Occasionally a dense, high-bitrate 60-second segment won't, and that's a surprise best discovered before you're posting a series.
Cut on sentences, not on the stopwatch
The obvious way to split is at 00:60, 01:60, 02:60. It's also the worst way, because it guarantees every segment after the first begins in the middle of a word.
Each piece has to work as its own opening. That means pulling every cut back to the nearest completed thought and accepting that your segments will be uneven. 47 seconds, then 52, then 38. Uneven and coherent beats even and truncated.
Splitting is easy; reordering is the point
Any editor can make a cut. What changes the edit is what you can do afterwards.
Montaj puts the pieces on a real timeline, so after splitting you can reorder them by dragging, drop the segment that turned out to be dead weight, re-split somewhere better, and undo all of it. There are 100 levels of undo, which is roughly the number of attempts a sequence takes before it's right. The work happens on your device with nothing uploaded, and each export comes out at 1080×1920 with no watermark for you to post. Being able to split a video for Instagram is table stakes; being able to change your mind about the order afterwards is what actually saves the edit.
Splitting a video for Instagram in 4 steps
- 1
Work out what you're splitting for
Splitting to remove a bad section is one job. Splitting a long video into a series of postable segments is another, and Stories are where the length limits force it.
- 2
Respect the Stories ceiling
Meta's publishing documentation gives Stories video a maximum of 60 seconds and a minimum of 3 seconds. A four-minute talk becomes at least four segments.
- 3
Cut on sentence boundaries, not on the clock
Splitting at exactly 60 seconds lands mid-word. Pull each cut back to the nearest complete thought, even if that means a shorter segment.
- 4
Check each segment's file size independently
Meta documents a 100 MB maximum for Stories video. Splitting reduces duration but each piece is still a separate file with its own limit to clear.
The verdict
— Thomas, Social Media Manager