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I am recording video with two iOS devices (which I will then use for camera cuts, etc...), and I would like to use a single audio source for both videos.

My thought is that I would need some kind of splitter that could take output from something like the iRig PRE, then split that and plug it into both devices as a microphone and it would work as such.

Is there such a device?

Or am I going about trying to edit video from multiple cameras all wrong?

(What I'm doing at the moment is recording the audio line separately, then syncing it to each video, rendering out intermediate sync'd up video, and then editing those files together, which seems like it wastes an extra step; but I've no professional training in how this is generally accomplished.)

The only answers I've found here seem to involve using separate headphones and a mic running into the same jack on a device, which is kind of the inverse of what I am looking for.

  • I usually just record the audio with an external source and then sync the audio after recording video. I silence the audio on both videos, then add the better quality audio afterwards. I also want to know the answer to this question, though. – aglasser Jul 28 '14 at 17:18
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    I just found a feature in Final Cut Pro X that allows you to take multiple clips and it will sync them up as different camera angles, and then it treats this a single video that you can cut/rearrange as needed. I will probably do this, since I have FCP:X, but I will still wait to see if there are any answers to the question before answering on my own. – AberrantWolf Jul 28 '14 at 17:49
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There were no devices which were designed to filter matching audio into two iOS devices at the same time. The solution I went with in my comment is likely the best.

That is, Adobe Premiere and Final Cut Pro X both have a feature which will use audio to automatically sync up video tracks. I recorded high quality audio with an external microphone, and using that in conjunction with the audio built into each device, FCP:X was able to create a multi-camera clip with the three audio tracks and two video tracks synced up. I could then select each audio track and each video track independently.

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