4. A video without good audio is as useless as a chocolate teapot. Ensure the audio quality is good. Depending upon the kind of video you creating, use quality audio equipment. Most of the pro users who make videos from home use something like a Blue Yeti Mic or some other podcasting mic. Here’s a good rule of thumb: The audio is the most important part of a video.
Not only do subtitles and closed captions help viewers, but they also help optimize your video for search by giving you another opportunity to highlight important keywords. You can add subtitles or closed captions by uploading a supported text transcript or timed subtitles file. You can also provide a full transcript of the video and have YouTube time the subtitles automatically, type the subtitles or translation as you watch the video, or hire a professional to translate or transcribe your video.