What's the best way to hide burned (hard-coded) subtitles using FCP tracker or mask?

I made an effect, tentatively called "Blur Area", that I designed to cover burned in subtitles that might help out.

Here's a "burned in" subtitle:

This is what Blur Area looks like without modifying any parameters:

And this is what it looks like with new text overlaid:

Blur Area features a method of timing so that you can have it appear only when a subtitle is visible and apply as many Blur Area effects as you need on a single clip (within reason!) so that you don't have to blade clips for every subtitle.

Blur Area contains a number of features so that it can also be made to look like the new GlassMorphism effect (and what you see below is overlaid on the original subtitle as in image 1 above):

Here are the parameters:

The Blur Amount set high, will remove any subtitle text (as seen in image 2). 75 is the default, but the actual value will depend on whether GlassMorphic is selected.

X.Scale and Y.Scale will scale only the area within the bounding rectangle and is useful in several conditions — it will help "even out" the "background effect" depending on the scene's appearance (it will take some practice to understand this.) When used with GlassMorphic, you can create a very interesting distortion effect that is very much like glass. The effect is designed to so that the scaling occurs from the center of the effect's rectangle.

Roundness is designed retain it's setting regardless of how you resize the area. 100% will always be rounded like this:

Feather is best used for non-Glass appearances. Feather only feathers outwards.

The **combination** of Gamma RGB and Overlay Color/Opacity/Blend Mode is completely open for experimentation. Overlay Color is Off (Opacity=0) by default. You can use the Overlay Color as a Solid background if you like, any color. If you know how to use Blend Modes...

In At % and Out At % are the timing mechanism. Values are in "Percent of Length of Clip", whatever the length of the "cut" is.

Fade Time gives a little bit of Fade In/Fade Out if desired.

The OSC parameters allow for precision placement and you have the option to hide them if they start to get in the way.

Once you design the "looks" you like the most, you can save the Blur Area effect's settings as an Effects Preset and apply those instead of the original to use your customized design without having to restart from the beginning for each application.

You can download Blur Area here:

https://fcpxtemplates.com/sdm_downloads/blur-area/

Please let me know when you've downloaded it — it's only available for about a day... maybe.

Hope it helps!