I had ended up using ffmpeg a few times for this (i think inspired by the link you gave there) because it's often easier to share video than just audio on mains

I had ended up using ffmpeg a few times for this (i think inspired by the link you gave there) because it's often easier to share video than just audio on mainstream social media A few details of what worked for me and the output shown here: https://discourse.mozilla.org/t/tts-audio-to-video-trick-using-ffmpeg/62686 https://discourse.mozilla.org/t/tts-audio-to-video-trick-usi... But Astrofox looks much cooler and massively more sophisticated.