Video Editing Software
Another very good option is to take the slides you have made and the vocal that you have recorded and put them together using video editing software.
The final step in the creation of your video, no matter which method you are using, will usually be the editing of the video. There will undoubtedly be little glitches that you will want to remove (maybe large glitches). There are a couple of ideas that come to mind rather quickly.
I have already mentioned Camtasia, a screen shot software, which has editing capabilities build in to the program. If you want to afford that tool, then you will not need anything else.
An alternative would be a video editing program for your computer. There are a lot of them available and this is not really the place to convince you that you should use one over the other. I will show you the one that I use only because it’s the one that I use and I am familiar with it. It’s called Power Director. With this type of software you can choose how you want to put your video together.
When I use CamStudio and need to do some editing, I can import my finished video from CamStudio into my editing software and it’s easy to make changes at that point. If I need to correct a slide, I can go back to Open Office and make the change and then just insert the new slide in the proper place and not have to record my voice again. If something in the audio needs to be removed, I can cut as long as the glitch is in the same slide and you will never notice it. With this method, I can add extra slides at the beginning and/or the end with no problem.
Another option is to record the slides and then record my voice reading them and put them together in the editing software. I could even record with CamStudio and then separate the video and the audio in Power Director and ad the slides one at a time.
I could make the slides, outsource the audio and then put it together with ease with Power Director.
I can even use slides, audio and then add a head shot in the corner! All I need to do is use CamStudio to make the video and at the same time use my web cam to record my face on a separate video. Then, I can go to Power Director and import BOTH videos, sync them by making sure that the two audio tracks are very close together, and then removing one of the audio tracks with one click.