          argument_list.append({"opts": ("-fr", "-frames_folder"),
                                "action": DirOrFileFullPaths,
                                "dest": "frames_dir",
                                "help": "Directory containing source frames "
                                        "that faces were extracted from."})
          argument_list.append({"opts": ("-fmt", "--alignment_format"),
                                "type": str,
                                "choices": ("json", "pickle", "yaml"),
                                "help": "The file format to save the alignment "
 
</s> remove                               "action": DirFullPaths,
 </s> add                               "action": DirOrFileFullPaths, </s> remove                     "separated list of alignments files with the -a flag."
 </s> add                     "separated list of alignments files with the -a flag. Optionally specify a "
                    "faces (-fc) folder to filter the final alignments file to only those faces "
                    "that appear within the provided folder."
                              "filetypes": "video",
          argument_list.append({"opts": ("-fr", "-frames_folder"),
                                "action": DirOrFileFullPaths,
                                "dest": "frames_dir",
                              "filetypes": "video",
                                "help": "Directory containing source frames "
                                        "that faces were extracted from."})
          argument_list.append({"opts": ("-fmt", "--alignment_format"),
                                "type": str,
                                "choices": ("json", "pickle", "yaml"),
                                "help": "The file format to save the alignment "
keep keep add keep keep keep keep keep keep
 Alignments tool updates

Merge alignments: Add ability to filter out faces that do not appear in the final alignments file
GUI: Add icon to open video file for frames 
tools/cli.py