Capturing Synchronized Audio Independently from Video

If you are editing material acquired via dual system recording, meaning that video and audio are recorded simultaneously to different devices, you need to capture your audio and video separately and then synchronize them together in Final Cut Pro. After capturing, you can combine the corresponding video and audio clips into a merged clip. Merged clips work in the same way as other clips in Final Cut Pro, but they refer to separate video and audio media files (whereas most other clips, such as clips captured from DV tape, refer only to a single media file that contains both video and audio). For more information about merged clips, see Merging Clips from Dual System Video and Audio.

When capturing audio from an audio-only player such as a DAT player, it is important to precisely synchronize the sample clock of the digital audio player with the clock of your audio interface.

Figure. Diagram showing the layout of a DAT deck, blackburst generator, and breakout box connected to a computer.

Using a common timing signal for both your audio device and capture interface is especially important when you capture long segments of audio. If your audio deck is not set up in this way, the sync between the audio and video of merged clips you create can drift over time.

To capture and edit digital audio properly, make sure your footage and equipment meets the following requirements:

For more information about connecting a blackburst generator to your video and audio equipment, see Synchronizing Equipment with a Blackburst Generator.