When an official video description prints a tracklist, the numbers at the start of each line (01, 02, 03 and so on) tell you the running order on the release. They are not a ranking, and they do not say which song matters most. It is easy to read the top line as the headline song, and often the video really is for the first track, but a list on its own cannot confirm that. A title track is only a title track when the post says so in words, such as a label next to the name or a line in the announcement.
Titles themselves need care. A parenthesis after a track name can be a real part of the official title, a subtitle, or a version tag such as an instrumental or a remix. From a description alone you cannot always tell which, so the safe habit is to copy it exactly as printed, including spacing and punctuation, rather than tidying it. Another trap is a track whose title is just a number. If you see a two-digit figure on a line, check whether it follows the list number before assuming it counts something. A title like that is a name, not a total, and should be written as one.
Descriptions and streaming pages do not always match. The description may spell a title differently, use different capital letters, or leave out punctuation that the streaming listing keeps. Neither is automatically wrong, but they are two separate pieces of text. The streaming page for the release is usually where you find track lengths and credits, so use it for those details. Also read the wording near the links. The phrase 'is out' together with a listen link means the release is available now, while a pre-save link means it is not yet out and you are only being asked to set a reminder.
To confirm anything, open the release's own page on a streaming service and read the act's official notices. Keep the limits in mind as well. Some descriptions list only some of the tracks, and bonus tracks or tracks found only on physical copies may be missing from the printed list. Most of all, a tracklist is a list of names and an order. It tells you nothing about how any song sounds, so leave the sound to your own ears and keep the facts to what the post actually states.