They use the ASS format and the text isn't baked into the video. Here's the same video with the softsubs toggled on and off: https://screenshotcomparison.com/co

They use the ASS format and the text isn't baked into the video. Here's the same video with the softsubs toggled on and off: https://screenshotcomparison.com/comparison/10459 https://screenshotcomparison.com/comparison/10459