CODEWITHSUNDEEP
pythonanimationmatplotlibsave
user119921
user119921

Reputation: 21

Matplotlib Animation - trouble with the speed of the saved file

I am trying to make animations using Python-Matplotlib.

I am using this tutorial:

http://jakevdp.github.io/blog/2012/08/18/matplotlib-animation-tutorial/

The animation in the first example works fine when I just execute the Python script, however in order to be able to save it (anim.save command), I had to add 'writer=animation.FFMpegFileWriter()' as an argument. Now however the saved file plays much slower than the original file. In fact the video is always 40 seconds long, no matter to what value I set 'interval' in the FuncAnimation object.

Any suggestions on how to fix this?

Thanks for you help :)

Upvotes: 2

Views: 3464

Answers (2)

RJT
RJT

Reputation: 384

You have to specify the desired frames per second as an argument:

anim.save('filename.mp4', fps=120, writer=animation.FFMpegFileWriter())

Upvotes: 0

FuzzyDuck
FuzzyDuck

Reputation: 1521

I have had a similar problem saving with FFMpeg.

A solution that worked for me was to modify

writer=animation.FFMpegFileWriter()

to read

writer=animation.FFMpegFileWriter(fps=n)

where n is your desired output frames per second.

Upvotes: 3

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