Hardcoding subtitles: When you hardcode subtitles into the video, they are embedded in the video file itself. This means that they will be visible without having to add any additional files. Hardcoding subtitles is a good option if you want to make sure that your subtitles are always visible, even if the viewer's device doesn't have the ability to display subtitles. It's also a good option if you want to avoid having to add an additional file to your video when you upload it to YouTube. Downloading subtitles in SRT or VTT format: SRT and VTT are two common subtitle file formats that can be easily imported into YouTube Studio. Downloading subtitles in SRT or VTT format is a good option if you want to give your viewers more control over how they view your subtitles. For example, viewers can choose to turn on or off subtitles, or they can change the font size, color, and position of the subtitles.