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What concept of time is used to sync camera and audio?
Timecode is an important form of production metadata, which if used correctly can save productions time and money. The theory is simple. Each frame recorded is assigned a specific timecode, allowing editors to find a particular frame across multiple camera and audio sources by referencing this number.
What is the difference between timecode and genlock?
Sync (genlock) is like a beat that calls out when a field (as well as a line with tri-level) occurs, while timecode indexes each frame (or the equivalent period of time for an audio recorder) so that it can be identified in uniquely post.
How many tentacle Sync do I need?
We recommend to work with one Tentacle for each recording device. It is the safest workflow. This way you sync your Tentacles once at the beginning of shooting, connect one Tentacle to each camera or audio recorder and leave it running the entire day without any hassle.
What is HDMI Time Code?
Using the HDMI port for timecode is really designed to take timecode from a camera that has an HDMI port on it, and the camera has to be able to output timecode on its HDMI port. So keep in mind there are lots of different cameras out there with HDMI on them.
What is genlock for?
Genlock synchronises the cameras. It uses the pulse that generates the frames within the camera as the synchronisation point. This pulse sends a signal telling each device to capture frames at exactly the same time, creating an incredibly accurate way to align multiple sources of video content.
What’s the best way to sync all cameras?
The ideal solution, when all cameras can’t be hard-wired to a reference source as in a TV studio, is to connect each individually to a reliable sync device such as an Ambient Recording Lockit Box or a Sound Devices recorder with sync output.
Do you need software to sync video and separately recorded audio?
What it does require is that the video camera has its own microphone which is recording the same sound as the separate higher quality audio recording that you are making. And it requires access to some audio editing software.
How is timecode used to sync audio and video?
Genlocking would keep multiple cameras firing at the same time however timecode is used to sync audio and video. During long cable runs, combining a audio mixer, and cameras, there is a frame or two delay. Timecode allows you to then sync the audio with the video so the cable delays are no longer an issue.
How does frame sync work on a video switcher?
The sync creates a rhythm for the whole video system so it can send and receive data at high speeds without dropping any frames. Not all sources can accept sync, so most manufacturers have added a frame-sync to their video switcher. The problem is that by syncing on the switcher you have added one frame of delay.