If you're looking to export a single frame from Final Cut Pro X as a JPG, there's a built-in function to that. Here's how to do it.
If you’re looking to export a single frame from Final Cut Pro X as a JPG, there’s a built-in function to that. It takes the current frame at the playhead, and it works with layers and titles and any other visual effects you’ve applied.
The title is what’s used for the filename. The other fields are entirely option–leave them blank if you like.
By default, it exports as a JPG.
There are also some other options aside from JPG. You can also choose TIFF, PNG, PSD, OpenEXR, or DPX image file formats.
There’s no way to specify dimensions when you export. It just takes the resolution of the project and uses that.
The colorspace is taken from the embedded colorspace of the source project.