Zibai is very strong. Even though Knuckle Duckle favors Electro characters, Zibai can out-DPS my Varesa for this fight. I tried Fischl+Sucrose too but that team is slightly worse than Varesa+Iansan.

Now for the video tech: compared to compressing anime, it's significantly harder to compress video game footage. Anime usually has simpler scenes with very little movement or a lot of static objects and backgrounds. Video game footage tends to have a lot of moving objects and higher framerates. I was forced to render this one at 360p, 30fps, VP9 45 CQ slow. With AV1, I think I can achieve much better. What's impressive here is Opus: at only 32kbps, the audio still sounds acceptable.