COMPOSITION OF VIDEO TRACKS AND BLEND MODES

Principle:

The VJX16-4 integrates BLEND modes between the video tracks which allow you to mix the four tracks in one flow (video composition). Each track has got a blend mode, independent of those applied to the other tracks.

The four video tracks are blended two by two: one track is blended with it or the tracks on the lower layers. The final composition depends therefore on how the tracks are organized on the layers.

The result of the composition of 2 video layers depends on:

• The transparency of the track on the top layer (ALPHA component).
• The BLEND of the track on the top layer.

The following diagram depicts the blend of the two tracks on layers B and C:

Principle:

• If the track on the top layer (layer B) is completely transparent (null ALPHA component), the result of the blend between the two tracks will be the track on the lower layer (layer C).
• If the track on the top layer (layer B) is totally opaque (maximum ALPHA component), the result of the blend between the two tracks will depend on the Blend mode chosen on the top layer.

Composition and Blend of the four tracks:

The VJX16-4 has 2 video mixing modes (MixMode ) : Compositing mode and Battle 2*2 mode.

• The Compositing mode is the default mode of the table. The composition of the four tracks is organized in cascade. Here is the principle: layer D is blended with the background (BCK GND). The result is blended with layer C, then blended with layer B and finally with layer A. Once the 4 video layers are mixed, you will be able to view the result of your composition on the MASTER 1 and MASTER 2 buses.

The diagram below illustrates the organization of the Compositing mode:

Layout of the Compositing mode

• Battle 2*2 mode allows you to configure the table in two parts, each one can mix two video tracks:
  • Tracks 1 and 2 can be assigned to layers A and B. When they are blended, the result is available on the MASTER 1 bus.
  • Tracks 3 and 4 can be assigned to layers C and D. When they are blended, the result is available on the MASTER 2 bus.

The diagram below illustrates the Battle 2*2 mode organization:

Layout of the Battle 2*2 mode

In Battle 2*2 mode, the table is split into 2

Helpful Hints:

• The SOLO functions are deactivated in BATTLE2*2 mode .
• Refer to the MASTER MENU chapter to configure the MixMode.

BLEND Modes:

The VJX16-4 has various BLEND modes. They are all available simultaneously and independently on each of the video tracks and allow the user to create elaborate compositions on each of the four video tracks.

To modify BLEND modes, use the 4 knobs and the Hold button.

Turn the BLEND knob of the track which you wish to modify. The LCD screen will then display the blend modes you have chosen for the four tracks.

List of available blend settings:

• Normal
• Additive
• Average
• Darken
• Lighten
• Stamp
• Difference
• Subtract
• Negation
• Xor
• Red
• Green
• Blue

Once you have selected the BLEND mode, it is applied instantly. This seamless action allows you to switch from one mode to another simply and very quickly (ex. swap from STAMP mode to DIFFERENCE.)

However, you can also switch from one mode to another without applying intermediaries (ex. switch from Darken to Difference without applying Lighten or Stamp). To achieve this, press down on the Hold button while you adjust the BLEND knob until you find the desired mode, (for example the Difference mode.) When you release the Hold button your choice will be activated.