CodeProject Archives - C & C++ Programming Blog | Faye Williams

Screencasting on Fedora [20]

8 June 201628 October 2014 by Faye Williams

To start with, did you know you can record a screencast on Fedora just by pressing CTRL-ALT-SHIFT-R?

No?

Me either. How fantastically easy is that?

Once you’ve pressed the keys, you get a little red circle in the top right of your screen that indicates recording is on. When you’re done, just press CTRL-SHIFT-ALT-R again to stop.

The file will be automatically saved in your <user>/Videos folder with a name along the lines of:

Screencast from 17-10-14 11_57_52.webm

Importantly, this DOES NOT record audio.

Well that’s annoying.

Quickly Convert .ogg Audio Files to .mp3 Format [Fedora]

8 June 201621 October 2014 by Faye Williams

OK, first of all you need to install the gnome media apps:

yum install gnome-media-apps

This provides a command line tool called sox.

Quickly Convert .webm Files to .mp4 Format [Fedora]

8 June 201617 October 2014 by Faye Williams

Recently I made a very basic screencast using the built-in tools on Fedora (how-to here).

Once I’d recorded everything I realised that my trusty Mac (well, iMovie to be specific), had no idea what to do with a .webm video file.

And neither did I.

Sigh.

Polymorphism and Overloading in C++

8 June 201613 August 2014 by Faye Williams

A reader sent me an interesting question the other day. They asked if polymorphism and overloading were essentially the same thing.

My initial reaction was Huh?

What are people being taught if they think that these two concepts are the same thing?

But a quick google search revealed that yes, many, many people are struggling to differentiate between these two terms – and the internet is full of conflicting and unhelpful information.