Google Colab: Video data is no longer automatically embedded in the notebook

[mathriddle]

Previously, running the command "from manim import *" all by itself in a Colab cell would result in the output "Manim Community v0.18.0". Then the manim code to make a video could be run in additional cells. With v0.18.1, however, no output is generated running that import command, but the "Manim Community v0.18.1" appears as the output after rendering a manim snippet in a subsequent cell, along with the message about "no video with supported format and MIME type found".

Adding the line config.media_embed=True to the cell with the import command does resolve the issue, but the "Manim Community v0.18.1" output still appears as the output along with the now functioning video.

[behackl]

The version spash shown on import has been disabled by default.

As for the video: it actually is being generated, Colab can just not display it if it is not directly embedded into the notebook source. The default behavior of this config option (config.media_embed) has been changed; it is False now by default, None is no longer an allowed value.

The corresponding code that needs to be updated is here:

manim/manim/utils/ipython_magic.py

Lines 172 to 176 in 31f1895

	if embed is None:
	# videos need to be embedded when running in google colab.
	# do this automatically in case config.media_embed has not been
	# set explicitly.
	embed = "google.colab" in str(get_ipython())

We should change this such that media_embed is True whenever the IPython magic is run on Colab.