I'm very happy that I was able to get Vokoscreen running.
First, I tried installing it from backports: sudo apt-get -t jessie-backports install vokoscreen
But, it always said "ffmpeg is not running" whenever I tried to record.
So, I uninstalled it: sudo apt-get purge vokoscreen
Then, I tried installing it normally: sudo apt-get install vokoscreen
But it failed because I have ffmpeg from Jessie Backports, instead of libavtools from Jessie.
So, finally, I downloaded it from the official URL: http://linuxecke.volkoh.de/vokoscreen/vokoscreen-download.html
It worked! It uses its own ffmpeg.
I'm looking forward to making videos with it 🙂 My laptop microphone has a lot of noise and it's not clear, so I'm going to use my camera and sync it for better quality content.
Also, this is my first WordPress post. As a memento, I would like to reproduce the original Punjabi title, English content, and Punjabi permalink: "ਸਤਿ ਸ਼੍ਰੀ ਅਕਾਲ ਪੂਰੀ ਦੁਨੀਆਂ ਨੂੰ!" - "Welcome to WordPress. This is your first post. Edit or delete it, then start writing!" - "ਕਈ-ਹਾਲ-ਹੈ-ਦੁਨੀਆਂ-ਵਾਲਿਓ"