I have recorded an audio file, and would like to upload it to Youtube. But Youtube requires me to convert it firstly to video. So how do you do that in Ubuntu? Thanks!
You can use the Open Shot Video Editor. First install it:
Since you only have music you will need a picture to use as the "video" part of the video. Once you have decided on a photo, open Open Shot and import your files.
Now drag your files into the timeline below, picture on top and music below.
You'll notice that the music is much longer than the picture, so we'll need to lengthen the time the picture is on the screen. Zoom out so you can see the entire length of the music.
Now select the resize tool and increase the length of the picture so that it matches the length of the music.
When you're done you will need to export the video. Click the "Export" button, fill out the dialog the way you want and click "Export".
You can now upload your video to Youtube.
You can use Avidemux. Avidemux allows you to create a video file from an audio file.