I’m not convinced this is more work…
With an exported frame, you have to:
- Move the playhead to the last frame of the clip.
- Use the hotkey to open the frame export window.
- Ideally, give the exported frame a name, for the sake of clarity.
- Press Save
- Drag the clip to the timeline.
- Trim it or extend it to fill the gap.
With the first method suggested by @shotcut:
- Select the clip.
- In the property panel, add the number of seconds (or frames) needed to fill the gap. Be generous, if the gap is 1.5 seconds long, add 2 seconds. If the gap is 3 seconds long, add 4 seconds. You’ll only use what you need.
- Press Apply.
- Extend the clip to fill the gap.
Other advantage, you don’t end up with all those extra files in your project.