English Adaptive to the video. The video size is scaled proportionally. Give priority to ensuring that all video content is displayed. If the video size does not match the display window size, the unfilled area of the window is be filled with the background color.
Chinese 适应视频，视频尺寸等比缩放。优先保证视频内容全部显示。若视频尺寸与显示视窗尺寸不一致，视窗未被填满的区域填充背景色。
English Video size is scaled non-proportionally. Ensure that all video content is displayed and the window is filled.
Chinese 视频尺寸非等比缩放。保证视频内容全部显示，且填满视窗。
If
English Adaptive to the area, the video size is scaled proportionally. Ensure that all areas are filled, and the extra part of the video will be cropped.
Endif
If
Chinese 适应区域，视频尺寸等比缩放。保证所有区域被填满，视频超出部分会被裁剪。
Endif