By default, YouTube allows video uploads that are up to 15 minutes long. If you try to upload videos longer than 15 minutes, the upload will fail. This is a YouTube limitation rather than a Brightcove limitation.

To upload longer videos to YouTube, you need to verify your account with YouTube:

1. Open the YouTube upload page at https://www.youtube.com/upload.
2. Click on settings : 
   
   

   Follow the steps to verify your account with a mobile phone.

4. When you receive a text message from YouTube in response, enter the verification code from the text message and click Submit.

YouTube will then confirm when your YouTube account has been activated for longer uploads.