Grid Division Options:
Suggests in grids (distortion, distance, grid, perspective) users can input their preferred division options, such as 2x3, 4x2, 10x6, 8x20, etc., rather than fixed options (2x2, 3x3, 4x4, etc.). This feature is useful when overlaying the grid on a swimming pool (8-10 lanes) or an athletics track (8 lanes) with 8/10 divisions on the y-axis. And it allows users to choose their desired divisions on the x-axis for their own calibration purposes.
Drawing Visibility:
The opaque duration (in frames) is limited to a maximum of 500 frames, resulting in an appearance of 5 seconds for 100fps video or 20 seconds for 25fps video. It is suggested to provide an option for users to set a frame limit greater than 500 frames, according to their desired duration.