Video chats on Facebook are really very convenient. This feature was especially useful for me during a lockdown, when I didn't have the opportunity to meet with friends and I felt very lonely. Such video conferences with friends helped me feel like a part of society again, despite the poor quality of the Internet connection in rainy weather or technical problems with the equipment for video calls (headphones or microphone). I figured out a way to troubleshoot these issues even before the video meeting started, using a simple online tool that
test webcam and I can check how it works before I start chatting with friends.