Chance here, with another edition of BMD’s tech blog series “Behind the Lens!” This week we’re going to talk about how to incorporate user audio with BMD Scenic Projections. By default our projections do not include audio, but you can absolutely use your own audio to enhance the overall performance! Please note that not all cueing softwares will allow you to do this, so take a look at the tools you have available to ensure this is something your playback is capable of!

Let’s take a look at an example of how to do this!

In this example, we are going to be using QLab.

First, you need to identify which video you want to add audio too. Take a note of exactly how long the file is!



In the above example, we can see that the file is 5 seconds in length.

Next, find out exactly which moment within that five second clip you want to sound to occur. For this example, let’s say there is a flash of lightning at 2.25 seconds into the video. So, you’ll want to edit down the audio file you have so that it is 5 seconds long, with the audio triggering at 2.25 seconds into the file.

Then, you will want to set the preceding file to “Auto-Continue” to allow both the video and audio cue to trigger at the same time. It should end up looking something like this:


The reason we want to have both of the files set to the same length is so that you can set the audio to LOOP. While in loop the audio and video components should line up to continuously (in this case) have lightning strike with sound.

While it may not be the same order of operations for another playback device, the principal remains the same. Take a look at the files you want to add audio, and trim the audio to match the video. QLab is very nice in this regard because you can trim the media within the program, whereas with others you may need a 3rd party utility to edit audio files.

Hopefully this has shed some light on incorporating audio with projections. This is just another step to making projections as cinematic as a movie, which will in turn get more seats filled.

If you have any questions or need additional assistance, please do not hesitate to reach out to us at

chance_thumbnailCHANCE CROFT, Support Technician

Chance is from Visalia, California and grew up performing in theatre. He attended California State University, Fullerton, where he studied theatre, focusing on theatre technology and education. If he wasn’t BMD’s awesome Support Technician, he’d likely be a voiceover artist (he has a very deep voice). He enjoys video games and finding new restaurants in town. Chance lives in Fresno, California with his girlfriend Sam, his two cats and his dog Lady. His favorite musical is Seussical.

Leave a Reply