User feedback on the commons talk page:
If you compare the current version with the oldest version of File:BORDEAUX CORONAVIRUS - 24H AVANT LE CONFINEMENT.webm at https://commons.wikimedia.org/wiki/File:BORDEAUX_CORONAVIRUS_-_24H_AVANT_LE_CONFINEMENT.webm#filehistory , there is a significant difference in quality of the video. Higher Compression factor ? or is there an error on my side. -- Eatcha (talk) 07:22, 30 March 2020 (UTC)
I think we could solve this by changing some params in ffmpeg while removing the audio from the video.
Code needs to be changed some where here: https://github.com/wikimedia/labs-tools-video-cut-tool-worker/blob/master/utils.js
More info about the tool information and link's to repositories : https://phabricator.wikimedia.org/project/profile/4054/