I am planing to record some screencasts about coding, hardware hacking and gaming. But as you all know a good screencast does not only consist of a nice recording, but also a nice intro and a nice outtro (also called “extro”). So I created a nice looking wallpaper and a friend of mine composed a really cool song for me. Thanks Fabi! Using the OpenShot video editor it was very easy to combine these two and then I just had to add some animated text.
However, all text animations offered by OpenShot did not meet my needs, so I decided to create my own using the Gimp. After about two hours of work, several coffees and much copy ‘n paste I had a nice animation of typed text. I exported my Gimp project as animated gif file and added it as a new track to my OpenShot project. Nothing happend. The gif was added but when I viewed the preview of my intro I just saw the first image of my gif animation. Just a short lookup and everything was clear - OpenShot is not able to handle animated gif files. Two hours of wasted time.
After a short freak out and a cup of coffee I decided to check if it is possible to convert an animated gif file to any useable video format. And now the good news: It is possible!
This should create a bunch of files, which could then be combined to a mpq video using the command below.
In my case this did not work, but since it does for most users, I would like to at least mention that.
But, fortunately for us, there is an other solution using mplayer and ffmpeg. Using mplayer you extract each frame as a.jpg file.
In my case running this command created a bunch of about 100 files, which were then fed into ffmpeg to create the mpq video file.
In this case the parameter -r specifies the number of milliseconds a frame is displayed and the names of the input files which are named by mplayer with an 8 digit number (including leading zeros) followed by the file extention .jpg.
Thanks to this solution I was able to add my typed text animation to my screencast intro. Which I will hopefully present you next time. Then I will talk about writing python scripts and plugins for the Gimp.
Stay tuned and until next time, happy converting!