matplotlib.animation.AbstractMovieWriter

class matplotlib.animation.AbstractMovieWriter

Bases: abc.ABC

Abstract base class for writing movies. Fundamentally, what a MovieWriter does is provide is a way to grab frames by calling grab_frame().

setup() is called to start the process and finish() is called afterwards.

This class is set up to provide for writing movie frame data to a pipe. saving() is provided as a context manager to facilitate this process as:

with moviewriter.saving(fig, outfile='myfile.mp4', dpi=100):
    # Iterate over frames
    moviewriter.grab_frame(**savefig_kwargs)

The use of the context manager ensures that setup() and finish() are performed as necessary.

An instance of a concrete subclass of this class can be given as the writer argument of Animation.save().

finish()

Finish any processing for writing the movie.

grab_frame(**savefig_kwargs)

Grab the image information from the figure and save as a movie frame.

All keyword arguments in savefig_kwargs are passed on to the savefig command that saves the figure.

saving(fig, outfile, dpi, *args, **kwargs)

Context manager to facilitate writing the movie file.

*args, **kw are any parameters that should be passed to setup.

setup(fig, outfile, dpi=None)

Perform setup for writing the movie file.

Parameters:

fig: `matplotlib.figure.Figure` instance

The figure object that contains the information for frames

outfile: string

The filename of the resulting movie file

dpi: int, optional

The DPI (or resolution) for the file. This controls the size in pixels of the resulting movie file. Default is fig.dpi.