In this video you will see how to add title clip in shotcut video editor
First create color clip. Add color clip on timeline.
Add text filter:
Click on filter, click on add a filter and search text filter.
Click on text:3d add text for a title. Change the text settings as you want it.
Add crop filter:
Again click on add a filter and search for crop filter.
Click on crop:rectangle. Click on padding color and choose a color for padding click on ok button.
Add animation using keyframe:
Click on use keyframe. Change the corner radius, now drag the corners of the textbox to close it.
Drag and drop it on the center of the screen.
Click on the play button to check it you can see text got hidden.
Now click on play button and pause it where you want to add animation. Drag the corners of the textbox and change the corner radius size. Now repeat the previous steps till the end of the clip. Once done click on the play button to check it.