MPG to Final Cut Pro is a powerful application to convert MPG to Final Cut Pro supported MOV, MPEG-4 format so as to import MPG to Final Cut Pro (X) for editing

1. MPG to Final Cut Pro , convert mpg files to FCP freely
Why need to convert/import MPG files to Final Cut Pro?
Final Cut Pro is the premium choice for any Mac video editing, and it is
widely used by Mac users now. These MPEG standard files can be these
different codes and cause failure in importing to Final Cut Pro. If anyone
comes across the situation, the best solution is to get aids from
MPEG/MPG to FCP converter for Mac, which can help you to convert
MPEG group files to FCP compatible video format and then files can be
easily imported for editing job.
As we know that Final Cut Pro don't natively support MPG, MPEG,
MPEG-1, MPEG-2 files, it can import MPEG-4 files (but need to be
rendered once you place them on your timeline) and MOV files (without
rendering). Therefore, to import MPG to Final Cut Pro directly, the best
way is to convert MPG to Final Cut Pro supported Apple ProRes MOV
files.
How to convert MPG to Final Cut Pro(fcp)

2. Step 1: Import MPG files
Download the latest version of MPG to Final Cut Pro Converter, install
and run. And then, click Add Files to import MPG files to FCP, or you
can also drag MPG files directly to MPG to Final Cut Pro directly.
Step 2: Choose output format and directory
You can click the drop-down list of Convert Toto select output format as
"Final Cut Pro"-> "Apple ProRes MOV ". After that, click "…" of Save
Toto designate a directory to save your converted files.

3. Step 3: Convert MPG to Final Cut Pro (X)
Click Convert to transcode MPG to MOV for editing in Final Cut Pro.
MPG to Final Cut Pro Converter is a practical tool for you to convert
MPG, MPEG files to Final Cut Pro supported MOV files in order to free

4. import MPG to Final Cut Pro (X) , FCE, iMovie on Mac OS X Mountain
Lion . Besides, it is also able to convert MPG to other video files AVI,
WMV, MP4, MKV FLV, DV, 3GP, ASF, RM etc.
Related Article:
MOV to FCP: How to convert MOV to FCP
How to convert mp4 files to fcp freely