Create an appropriate title. It should be very attractive, small and most suitable for the video. (Tips: If you can add Keyword like Leaked, Latest, Romantic etc.. will attract more searches.)
Description
YouTube video should stand out from the crowd. Try to determine what content it contains that will help users find it and distinguish it from other videos. Using descriptive language in complete sentences is a good idea. If people don't know the exact title or other keywords associated with your video, they might search the name of a participant or another website where it's featured. Be sure to include as much information as you feel comfortable, but be careful not to include anything that shouldn't be publicly displayed.
Tag
Tags help users to find your video when they search the site. When user’s type keywords related to your video tags, that video will appear in their search results.
Caption
A caption is a section of text used to give further information regarding the visual area it governs. Many times you will see captions in movies where a language is being translated to another language. Most often, these captions will be displayed at the bottom of the picture so that people who do not understand the language being spoken, can simply look to the bottom of the action and read the text in a more familiar language. Captions are used to give any kind of information to the viewer and can help emphasise, illuminate, or simply comment on the visual imagery associated with them. We need to prepare a caption file with time format and attach with each video. Caption files also plays an important role for ranking your video in YouTube search results.
Tips:
Create a great thumbnail - Use eye-catching images as thumbnail.
Create a great Title at the time of upload.
Use the most suitable keywords in description. If the video related to film industry, you can use the upcoming film names, popular actor, songs etc.
Update your video's description, title, tags regularly.
Attach a caption file, it also plays a important role.
Use annotation to Subscribe your channel.
