Erich Kästner wikipedia.org, a german writer and satirist of the time, had this to say:

The events from 1933 to 1945 should have been battled in 1928 at the latest. Later was already too late. One must not wait until liberty is called treason. One must not wait till the snowball has become an avalanche. One must squelch the rolling snowball. The avalanche can't be stopped anymore...

ffmpeg should be able to do that: stackoverflow.com

Methanol can also form naturally during fermentation, given the right conditions (certain microorganisms) and ingredients (pectin): nih.gov