A music videos success criteria

Ultimately a music video is made to attract viewers and therefore listeners, these are called music promotion videos. There are multiple ways in which professionals and the public can tell whether or not the music video is successful or not. These are :

1. Newspaper Articles and Tv reports: To identify whether the video is successful or not you have to ask your self what are the Newspapers or Tv are saying about the music video, you also have to ask whether their reviews are good or bad. Labels or the artists managers consider any publicity as good publicity therefore they are open to any type whether or not it is good or bad they can use it to their advantage. 
2. Channels and Music channels: Music channels are a good way to promote and distribute songs and music videos, a way you can tell whether or not a song is successful on a music channel is by the number of times the song is played, the more frequently the more successful the lesser means it is less popular. 
3. Music charts: The charts are mostly what the public follow or look towards for good music, depending on whether the song is on the top or bottom it shows its success  and therefore the interest of the public. If the song is in the top 10 in the chart it is considered successful but if it is in the 100's it is considered not successful. 
4. Sales- CD and downloads: Although CD sales have decreased now due to the increase in online downloading, CD sales definitely showed the popularity of either a certain single or album therefore showing the popularity of the product. But as the online downloads has been introduced there has now been ways to illegally download your music this means that we don't really know accurately how many versions have been sold therefore we don't know who is popular because the numbers would probably be higher if the downloads were all legally downloaded.
5. Youtube: On Youtube you can usually tell if a song or video is popular by how many views they have on the video, this is how many times someone has searched and clicked on the song, this shows statistically how many people have watched the video. for example the most viewed video on Youtube is PSY's  Gangnam style with 1,948,947,171 views  and the second is Justin Bieber's Baby. this shows the importance of youtube on a artists and a songs popularity. 
6. Word of mouth (WOM): This is basically when people talk about the product in this case the song or music video, the popularity is based on how many people are talking/spreading the word about it whether or not it is good or bad. This is what happened for many artists but most recently Miley Cyrus.
7. Publicity: And finally it all just comes to one more way, Publicity, if a song or video is thought to be successful the record company will hire a marketting company to publicise the music video or song, and you will see advertisements everywhere, bilboards, TV and many more. for example Christina Perri- Human.