Yes , 100% you will get better results in comparison to the profile just having text description .
Tips for your video
1. Make it short and brief.
2. Try to give a Intro who you are , what your experience is.
3. What service you will provide , what will be your TAT ( Turn Around Time )
4. How much dedication you will give per client ( Every client is important)
5. End your video with saying Thanks .
Sometime a Intro video of 30 seconds explain better then a video of 30 Minutes .
feel free to ask me if you have any further query.
See to it that you create the video with your face in it. I am saying this because most of the time many Fiverr sellers outsource their video and the prospect can recognize that it's not the seller but someone else. It is always better to reveal your true identity rather than hiding behind the doors and selling your services.