How to do screencasting (desktop recording) with high quality audio and video?
The solution I like is to use SimpleScreenRecorder. Here's how I did it:
How to build and install latest SimpleScreenRecorder from git?
My solution turned out to be simple to follow once I got the help I needed. I hope others can follow the dev's git instructions now.
Here's more info on SSR:
Main page - SimpleScreenRecorder - Maarten Baert's website
SimpleScreenRecorder is a Linux program that I've created to record programs and games. There were already a few programs that could do this, but I wasn't 100% happy with any of them, so I created my own.
My original goal was to create a program that was just really simple to use, but as I was writing it I started adding more and more features, and the result is actually a pretty powerful program. It's 'simple' in the sense that it's easier to use than ffmpeg/avconv or VLC, because it has a straightforward user interface.
Features
Graphical user interface (Qt-based).
Faster than VLC and ffmpeg/avconv.
Records the entire screen or part of it, or records OpenGL applications directly (similar to Fraps on Windows).
Synchronizes audio and video properly (a common issue with VLC and ffmpeg/avconv).
Reduces the video frame rate if your computer is too slow (rather than using up all your RAM like VLC does).
Fully multithreaded: small delays in any of the components will never block the other components, resulting is smoother video and better performance on computers with multiple processors.
Pause and resume recording at any time (either by clicking a button or by pressing a hotkey).
Shows statistics during recording (file size, bit rate, total recording time, actual frame rate, ...).
Can show a preview during recording, so you don't waste time recording something only to figure out afterwards that some setting was wrong.
Uses libav/ffmpeg libraries for encoding, so it supports many different codecs and file formats (adding more is trivial).
Can also do live streaming (experimental).
Sensible default settings: no need to change anything if you don't want to.
Tooltips for almost everything: no need to read the documentation to find out what something does.
Use kazam screencaster it can also record audio output from speakers or also eidete