Have you presented a seminar at an exhibition lately? How many people turned up? These days you could be looking at anything from a packed house to no people at all. Numerous factors come into play: the quality of the exhibition, the time of day, the traffic conditions, even the weather.

If you presented to just a handful of people, or less, it can all feel like wasted effort. And a lot goes into preparing a seminar. But with video, you can maximise the impact of your seminar, ensuring that it is viewed not just by the few people at the event, but by thousands of others around the world. So let's look at some options.

1. Record the event live: Put up a video camera at the back of the event, and you can record the whole thing as it happens. Audio needn't be a problem; if you have a radio mic and a receiver, you can record straight into the camera; if not, then try a tie clip mic going into a smart phone in your pocket (check out the Rode SmartLav for example). It's easy to sync up the audio and the video in your editing software. Once done, you have something you can put on your website as an element of your customer support resources, on YouTube, or even on a flash drive to send to delegates at the seminar (including those who registered but didn't turn up) as an aide memoir.

2. Mock it up later: Present the seminar again back at your own offices, and record it as above. In many ways, the end result will be better. You'll have more freedom with camera angles, you won't have to worry about the audience, and there will be more opportunities to correct any mistakes. You can either film in a normal presentation room with the PowerPoint recorded at the same time, or just film against a white background and drop the PowerPoint in later. You could even film against a green screen and then mock up a classy seminar room. However you film it, you can again put the finished seminar up on your website, on YouTube and send it to all those delegates who'd registered for the original seminar.

3. Just record audio for the PowerPoint: Using a voice recorder, an app on your phone, or audio software on your computer, you can easily record the audio portion of your PowerPoint presentation. Having done that, there is an option within PowerPoint to export the presentation as a movie. With that done, it's simple to marry up the two, and you have an instant webinar. Just like before, that's a great resource to add to the support pages on your website, and as far as the search algorithms on YouTube is concerned, it's no different from any other form of video. Also, by preparing this in advance of your live seminar, you have something you can hand to delegates on the day. I wonder how many people ever open the PowerPoint you give them on a disk - probably not many. But a video of the presentation would be a whole different board game.

4. Get someone else to record the audio: There's a strange thing about presenting. Giving a seminar to a crowded room can be a fun experience - the excitement, the challenge, the adrenaline, etc. But try and do the same thing to a camera or a microphone, and the whole thing goes to pot. A live event will always sound natural, but that can be incredibly hard to reproduce in a staged recording. Or, you find yourself making so many mistakes that it becomes too much of a chore to complete. But you can always just record a simple guide voiceover, and then give the whole thing to someone else to record for you. Personally, I've done voiceovers for dozens of projects, and have the additional benefits of excellent equipment and an ideal studio environment. But there are numerous voice talent artists online who will record your voiceover for you.

Think of the effort you've put into preparing and presenting seminars, not just during this exhibition season but over the years. Or the presentations you've made to customers or even to colleagues, perhaps to bring them up to speed with a new technology. With a little bit of repurposing, you can do so much more to maximise the impact of those presentations, and optimise the customer experience on your website at the same time.