Compressing your videos to smaller-size formats is an excellent way to maintain video quality while reducing its size. Some recommended formats are HEVC H.265, H.264, M4V, and MOV.
Another way to maintain video quality during compression is to adjust the slide bar of LQ-HQ. You can also opt for Use High-Quality Engine option in the advanced setting area.
Compared to the default video, lower the video resolution and its bitrate by 20-50%. A smaller sized video has a lower bit rate.