class_docstr: Frames matches inside a set of frames.
  
  You can instantiate it passing a list of FramesMatch objects or
  using the class methods ``load`` and ``from_clip``.
  
  Parameters
  ----------
  
  lst : list
    Iterable of FramesMatch objects.
class_docstr_tok: ["Frames","matches","inside","a","set","of","frames",".","You","can","instantiate","it","passing","a","list","of","FramesMatch","objects","or","using","the","class","methods","``","load","``","and","``","from_clip","``",".","Parameters","--","--","--","--","--","lst",":","list","Iterable","of","FramesMatch","objects","."]
docstr: Save a FramesMatches object to a file.
  
  Parameters
  ----------
  
  filename : str
    Path to the file in which will be dumped the FramesMatches object data.
docstr_tok: ["Save","a","FramesMatches","object","to","a","file",".","Parameters","--","--","--","--","--","filename",":","str","Path","to","the","file","in","which","will","be","dumped","the","FramesMatches","object","data","."]
code: def save(self, filename):
      """Save a FramesMatches object to a file.
  
      Parameters
      ----------
  
      filename : str
        Path to the file in which will be dumped the FramesMatches object data.
      """
      np.savetxt(
          filename,
          np.array([np.array(list(e)) for e in self]),
          fmt="%.03f",
          delimiter="\t",
      )
  
imports: from collections import defaultdict
  import numpy
  from moviepy.decorators import convert_parameter_to_seconds, use_clip_fps_by_default
label_desc: Use image node_id 4 for calling the FramesMatches obj's underlying member method code with example usage: obj.save(filename) without return types