The advise in this article applies to both Webinars and Recording Videos.
Most of us are using home offices, kitchen counters and basements to work from. The webcam in a laptop is very small, this means that it does not take in much light (small aperture) and the image will look grainy in low light situations. Ideally, face a window and try to avoid having a bright light behind you (to avoid a silhouette effect). A well positioned desk lamp can help immensely.
Avoid using the built-in Laptop microphone. A good USB microphone, either one that stands on your desk or a headset is ideal. If you don’t have one, try using a set of earbuds that have a microphone (your Smart Phone probably came with earbuds).
Try to minimize ambient sound in your recording environment. Close doors and windows, and turn off air conditioners and fans. If you can, use a small, carpeted room for the most neutral sound.
Test your setup
You can record using Panopto or run a Google Meet sessions with no one else in it and record yourself. This will let you preview how you look and sound before you invest time in recording a video.
For quick videos or for location shots, use your phone
Consider using your smart phone with a pair of earbuds. The camera in Smart Phones is amazingly high quality. The forward facing camera is typically much better than the selfie camera but both are usually better than a laptop’s webcam.
You can install Google Meet, Zoom, Panopto and Youtube on an iPhone or Android phone.