You may use your laptop, webcam, and microphone to record your description of the paper. You can also use a desktop computer with a standalone webcam and microphone if need be. And if you plan to do a simple video abstract, a smartphone that can record videos will do the job.
Video recording software:there are great resources online to help you make the best of your footage and storyboard. You might already have movie-editing software on your computer and there are numerous websites that offer advice on how to make the most of these resources: