The audio for this video is also muted and there isn't much I can do about it. Twitch has some kind of bollocks anti piracy shit where if they detect....something...the mute the audio. Despite the video having only in-game audio, it got muted until about the 20 minute mark on Twitch but the YT upload is completely silent.
I'm appealing the mute and if it gets un muted then I'll re-upload. Until then, enjoy the (probably) world record.