Multiple speakers, one video camera
We have a situation where we need to record a classroom training so we can start development for an elearning project. In the interest of space, we have only one video camera on a tripod in the room (canon vixia hf 520 (HD CMOS)). However, we may have at least 2 presenters. We have a lapel mic that they can trade off (sorry, don't know the brand as I don't have it here), but it is a little awkward. The mics are attached to the speaker and audio goes wirelessly to the receiver that is plugged into the camera.
Ideally, we would like to have 2 mics that can go to one receiver. We have tried using one of those multi-plugs (Belkin RockStar 5-Way 3.5-mm Headphone Splitter) to see if we can do two wireless mics to the same receiver, but it did not work. I am equipment-challenged and online reviews are sometimes hard to figure out for me. Does anyone have a setup with one camera that easily records both people to the video camera?
Special issue that makes using lapel mic important, as compared to just using the camera itself to record: Horrible HVAC noises in the area at the back of the room where the camera fits without making people trip. The lapel mic does a great job with making that less of an issue and the speaker comes through pretty clear.
We also have a straight portable audio recorder in the room to potentially just grab audio - just in case. Audio is the most important, but we may want the video for something later, so would be great to have audio/video together in one file and not have to do the tedious manual matching with an external audio file.
Please help if you have an answer! Thanks.