3D with stereo audio recording setup

I am setting up gear to record an event this weekend in 3D, and to record audio in stereo

Group of XLR connectors
Group of XLR connectors (Photo credit: Wikipedia)

with two long shot gun directional mics.

I use two Lumix GH-2s for the video recording but there is no way to monitor the recorded audio on the GH-2. Plus, I am using XLR mics. While I have a separate XLR mic mixer, I was not successful in feeding stereo signals into the GH-2 and could not find a solution to that problem.

I decided to just record the soundtrack separately. Since I do not have a digital audio recorder, but I do have an older SD camera with XLR inputs (a Panasonic DG-AVC30), I am planning to record the audio on the AVC30, while recording the video on the two Lumix cameras. My first attempt at a setup looks like this (sorry for the lousy smart phone photo – something better in the future) with the AVC30 bolted upside down on my homemade mounting rail.

The 18-inch long shot guns are mounted on top of the GH-2s, and crossed over. The one on the left records the right audio channel and the one on the right records the left audio channel. These feed into the XLR inputs on the AVC30, which enables me to monitor the audio as a I record it, plus I can adjust the audio levels in real time.

The three cameras need to be synchronized – the only way to do that is by recording an ¬†audio pulse (hand clap, snap of the fingers, other sharp sounds) on all cameras simultaneously. The audio tracks will then be lined up in the editor. I’m sure there are easier ways to do this but I am working with what I have and my zero billion $ budget!

The plastic bag on the tripod handle covers up a remote for another camera (not shown) and was put on there since I was out recently in the rain and wanted to protect it from the rain. I suppose I could get rid of that now!

What’s with all the rubber bands? That’ll be for another day.

Update: Found the problem with the mixer and ended up using the 2 XLR mics into the mixer and into one of the cameras. Didn’t need to use the video camera as an audio recorder. Whew!

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