The metadata are relevant factors for the search engine optimization of YouTube videos.
The following metadata should definitely be optimized:
All terms in the name of your video file are used by the algorithm for evaluation. Therefore, relevant keywords should be used when naming files.
The video title is extremely important not only for the users to decide whether the respective video is relevant to them, but also for the algorithm. The most important keywords should be contained in a maximum of 120 characters. The rule is: as short and simple as possible. YouTube automatically takes the title from the file name when uploading a video. Therefore, a correct title still has to be entered manually here.
Before naming the video, it is worth doing a comprehensive keyword research in order to record which search terms are actually being queried by users.
You should definitely write a descriptive text that summarizes the main content of the video. The text can also be enriched with links and keywords in order to provide the viewer with further information. The most important information should be at the beginning of the text, as only the first 95 characters can be read permanently under the video. Breaks and paragraphs help interested users to better understand the description text.
In addition to the description text, you should also use the tag function. Important key terms can be entered here and thus help to better grasp the thematic focus of a video. In addition to generic terms, you should also specify specific terms, synonyms and plural forms so that the video is also displayed in search queries with synonyms.
Subtitles make your videos accessible and give YouTube more information to capture the content of the video.
You can enter a text parallel to the video playback or upload a transcript from which the words are then automatically assigned.
If you use automatic speech recognition, you should check the result and correct it if necessary if errors have crept in.