When I re-encode a screen recording, all I really want to know is whether the small text survived. "Looks fine to me" is not a measurement, and a full-frame score mostly grades the flat background. So on one test recording I measured the text the narrow way: same moment from every encode, same ...
Source: [Dev.to](https://dev.to/yue_shu_c621a4a637f22396f/ocr-couldnt-tell-720p-lecture-text-from-1080p-a-cropped-ssim-could-4njo)