Maxxsonics MAXX-2400HD manual Ganging Channels for Synchronized Playback

Ganging Channels for Synchronized Playback

Two video channels can be ganged together for frame-accurate playback. This may be used for key and fill material (either stills or clips), or multi-channel playout of presentations, such as synchronized matte backdrops on News Broadcasts, or multi-screen projection of related images.

The channels can be ganged in the following combinations:

•Channel 1 controls Channel 2 and/or Channel 3 and/or Channel 4.

•Channel 2 controls Channel 3 and/or 4

•Channel 3 controls Channel 4

To configure Channel Ganging Click EDIT->CONFIGURE->TIMING from the Main Menu. The video timing adjustment screen on page 67 is displayed. Two examples of this are:

•To gang Channel 1 to channel 3, set CHANNEL GANGING MASTER to 1 and click the GANG checkbox on channel 3.

•To gang Channel 3 to channel 4, set CHANNEL GANGING MASTER to 3 and click the GANG checkbox on channel 4.

Using Ganging for Key-and-Fill or 3D Playback

Channel Ganging is used for frame-accurate playback of stills animated sequences that have an alpha, or key, channel. These in turn are fed to a downstream keyer or video effects generator, to be combined with other video content. Manual or automated control of the Master channel is all that is needed to play both the key and the fill. The MAXX-2400HD can also be used to play two synchronized channels for 3-D applications.

Key and fill clips are associated by their names. The Key Clip must have the same name as the Fill Clip with a trailing underscore. Example:

Fill clip name: myfile

Key clip name: myfile_

There is no provision for automatic loading of similar named clips on more than two channels—the Master channel and the next higher numbered Ganged channel.

Proper key and fill operation requires two clips of identical length. This can be accomplished by editing with head and tail trim.

Channel 3 is ganged to Channel 4 in the following example:

When a clip is opened/cued on Channel 3, the server automatically looks for another clip with the same name, plus a trailing underscore. If the clip is found, it is loaded on Channel 4. The Channel 3 clip contains the “fill” material, while the Channel 4 clip contains the “key” (or alpha) file.

MAXX-2400HD Owner’s Manual Page 71