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Apollo AV Align - The Solution to Audio / Video Sync Problems

Apollo and Apollo Option for the Odyssey7Q and Odyssey7Q+ include a very important feature: Audio/Video Align. In Apollo Mode, AV Align corrects for when Audio is out of sync with the Video and aligns multiple cameras.

All cameras have a delay (latency) from when the light hits the sensor to when the video comes out the HD-SDI or HDMI outputs. Some cameras have a much longer delay than others. Some DSLR’s have a four-frame delay, while more professional cameras typically have a much shorter delay. These varying amounts of delay among the cameras cause a problem when switching from one camera to another.

For example: consider four cameras pointed to a fashion runway.

As the model is walking down the runway, if one switches to a camera with a longer internal delay, then the model will appear to jump back to a previous position, which is, of course, unacceptable.

Also, even if one is using four of the same camera, set up exactly the same, except that one has a wireless transmission system or audio embedder in the signal path, then this one camera’s signal will be delayed, compared to the others.

It is fairly common for all cameras not to be Genlocked. Many cameras do not even have Genlock capabilities. It is fine to have Genlocked cameras and still use AV Align. AV Align solves the problem when Genlock is not available. (Please note that for some situations, either Genlock or even Pixel-Lock, is required for the shoot, such as when shooting professional 3D.)

The beauty of the Apollo and Apollo Option is the time it saves in Post! It does not take long for the savings in Post to pay for the Apollo or Apollo Option.

  • All clips start on precisely the same frame.
  • The timecodes match precisely.
  • The Audio and Video are precisely aligned.
  • Each file has matching filenames.

Setting up AV Align is quick and easy. It takes less than 2 minutes at the start of the day,
and then can save hours in post.  To set up AV Align:

  1. First, record a short clip with a clapper or just clap your hands, in front of all four cameras.

  2. Switch to playback and touch AV Align in the top menu.

  3. Using the scrubbing tools, or Frame Advance, find the point where the clapper or your hands touch for the first camera. Then touch Align Video button.

  4. Using the Frame Advance tools, find where the audio peaks, watching the audio level meters. Then touch the Align Audio Button.

  5. Repeat steps 3 & 4 for all cameras, then touch Done.

Now all of your audio and video are aligned. Once you become familiar with AV Align, you will be able to set it up in around one minute.

If you turn off the Odyssey or Apollo, it will remain in sync when you use it again, provided you use the same camera setup. If you change your camera setup or swap cables, you should perform AV Align again. If you wish to turn AV Align off or back on, you may do so in the Setup Menu.


Here is a short video tutorial:

Here are links to the Apollo and Apollo Option for the Odyssey7Q and Odyssey7Q+:

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