Streaming videos on dropbox.com are limited depending on the type of plan the video owner has. This limit only applies to recipients of a shared video. You can stream your own videos in their entirety on dropbox.com.
To view a longer video, recipients must download the file or watch it on a mobile app.
If the video owner is a Dropbox Business user
If a video is shared by a Dropbox Business user, recipients can stream up to four hours of the video. Any recipient, regardless of their account type, can watch most full-length videos up to four hours shared by Business users.
If the video owner is a Dropbox Basic user
When a Dropbox Basic user share a video, the recipients can stream up to 15 minutes of the video on dropbox.com.
If the video owner is a Dropbox Plus or Professional user