In this tutorial, we want to share with you one method we use to convert OBS Studio's video recording in MKV format into MP4 with very good compression (by almost 50% reduced file size) but by keeping the quality acceptable for students to watch at home. Let's read the tips below.

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This tutorial will explain in step by step how to record a computer screen (also known as screencasting or screen recording) using OBS Studio program. The program is available on Ubuntu GNU/Linux and all other operating systems as well. This will result in a video with a select file format like mp4 or mkv with your voice recorded in. Optionally, we include the setup so you can also record two way voices, both input and output, to record a video conference session with many participants, for example. We will explain it from installing the software to finishing the video.

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This tutorial covers a handy command line to convert MP4 video to MP3 audio. That command is called FFmpeg that is available in most GNU/Linux distros including Ubuntu and Trisquel. Although we know VLC can do conversion as well, but I figured out that FFmpeg does converting faster and better. By this, you can make an MP4 video playable as audio in your phone, portable player, and other devices other than computer. To do it, you should be able to do at least basic command lines as you can learn by the beginner's guide. I write this tutorial so I can refer to next time I write about multimedia. Enjoy!

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