If only ffmpeg->mp4 instead of svg... I had just thrown together a typescript bash script to record IRC with timing for later playback and sync with a podcast,

If only ffmpeg->mp4 instead of svg... I had just thrown together a typescript bash script to record IRC with timing for later playback and sync with a podcast, the trick is the rendering step: in theory it could be done on a canvas with native ffmpeg drawtext, but the invocation is super gnarly.