Video Map Configuration

Each Video map has its own settings

Rendering Mode

A video map is transposing pixels from input to output. In most cases, a simple pixel-to-pixel reference works well. However, when tiles are rotated to non-square angles or are scaled, super sampling becomes important. Super sampling itself also can introduce artefacts and it reduces the maximum resolution of the Video map so the decision of which mode to use depends on the application.

The main cause of problems is when pixels do not line up exactly with each other. Pixels are arranged in a perfect grid, however a rotated tile’s pixels will not always fall within that grid. Some pixels of a rotated tile will land between two other pixels — leading to the question of what is the correct behaviour. With super sampling, videomapper samples each underlying pixel many times allowing it to take an accurate average. Without super sampling it will use the nearest neighbour approach; using all the colour from the closest pixel.

To assist with this, there are three rendering modes to choose from:

• High Accuracy The default. Videomapper uses interpolation. The maximum resolution of the map is 8192 × 8192. Diagonal tiles will appear more smooth. May introduce artefacts when scaling small tiles to larger ones.

• High Resolution Videomapper uses less interpolation then in High Accuracy. The maximum resolution of the map is 16384 × 16384. Diagonal lines will be smoothed as compared to ‘nearest neighbour’. May introduce artefacts when scaling small tiles to larger ones.

• No Interpolation Videomapper uses no super sampling and instead uses the ‘nearest neighbour’ approach. The maximum resolution of the map is 16384 × 16384. Diagonal lines may appear steppy. Will note introduce scaling artefacts. This mode is completely pixel accurate and is best used when single pixel wide content or fixtures are being used