I'm currently in the process of creating a gallery of animated Game CG WEBPs converted from MOV file outputs of the 2D animator software Spine. Any advice you can give me on keeping the final products within 20MB with as much quality and framerate maintained as possible? My MOVs are transparent 1280x720 60fps videos that range within at least 4 seconds of runtime, and even with ffmpeg's lossy WEBP conversion (-q:v 100 -compression_level 6), the resulting WEBPs end up going over the 20MB requirement.