Why would you ever want to Upload Videos Shot Outside the Vine App??
If you upload your own custom vines, you add a wide array of special effects to your arsenal: You can add fades, wipes, and sound effects not recorded with your phone’s onboard mic. Also, you can use cameras that record in much higher fidelity than a phone.
Some Viners are already using this technique, adding reverse motion, scenes from video games, and even trailers for movies.
* Videos shots using other capture devices
* Videos edited from other apps
* Videos shots back in the days when Twitter and Vine did not exist
* Get rid of lost connection issue