YES! There are common forms of video that you may not think about, and more uncommon ones that you may not encounter often. Here, we will be focusing on the more common types of video files. See video files terminology for more information.
Before you start recording, you need to make sure you have access to some kind of editing software to put everything together and make sure you are happy with your product.
You may want to record a performance of your ensemble, and the audio on a camera and the built-in microphones on a phone might not be the best, but they are convenient. There are some video editors that allow you to extract the audio, in which case you can turn it into some sort of specific audio file and edit it, and plug it back in
You may want or need to take out or change words or scenes from a movie (your own or one you have access to).
Maybe you want to make a video/picture slides with background sound, such as an end-of-year video with recordings of the ensemble or another track you have access to and knowing how to fade in and out can help with transitioning between videos and pictures.
Look for tutorials for ideas on what kinds of things you can make.
The hardware and software that you have access to will determine what you are able to do. You can record audio and video on the same device using the built-in microphone, such as a video camera or cell phone, or you can record audio and video using different devices and replace the audio that comes from the built-in microphone. This will require syncing, unless the external mic is somehow connected to the camera.
You can record audio and put it to a slideshow of some sort, by generating a sound file that is compatible with your software and putting it over a video. For classrooms, you may want to edit an existing video by extracting the audio and put in a bleep or record something else to dub over it and place it in, or add sound effects.
Like putting together a slideshow, you can add titles, put different "shots" together and use audio to connect them, and stabilize images if things get a little shaky.
The software that you have determines what tools are at your disposal, basic and free softwares will not have as many options for editing, but if you are just looking to put a few things together or produce a video of a concert, you don't need to go looking for anything else.
Finding the right software will require you to do some research, but first you need to ask yourself why you are recording video. What is the purpose of the video? How much are you willing to edit? What is your budget? What kind of camera do you have? What kind of computer do you have?
There are plenty of free editors out there, such as iMovie, and you just need to make sure that they do what you want them to do. Don't be afraid of experimenting with different editors and looking for tutorials online to answer any questions you may have.
You also need to make sure that your computer/tablet can handle the software, either how it processes, or that you make sure that your operating system is up-to-date. To get started with some of the tools and information you will need to navigate an editor, visit the terminology page.
Here are some resources comparing different FREE editors:
This site is only for suggestions and examples on recording equipment and software and suggestions on how to set up your recording equipment, not exactly what you should buy and not exactly how to set things up. Depending on your space, equipment, and live/studio setting, you will have to experiment for the set-up that will produce your desired results. Don't be afraid to experiment and go outside of the suggestions laid out in this site.