5D.MoBlur

REQUIRED INPUT CLIPS
Clip to Blur: the motion of this clip will be used to create the blur.

BLUR CONTROLS
Steps (Min: 2 Max: 50 Default: 10)
The number of intermediate frames that will be generated between each pair of input frames.
The intermediate frames are found by analysing the motion between frames and using this to morph the frames to intermediate positions. These intermediate frames are then blended to create the motion blur.

Thresh ( Min: 0.5 Max: 400.0 Default: 2.0 )
The default value is usually correct for most cases. Try reducing this value if too many artefacts are created with extremes of motion.

Scale ( Min: 0.1 Max: 10.0 Default: 1.0 )
Scales the motion vectors. Values less than 1.0 will decrease the blurring and values over 1.0 increase the blurring. 1.0 is normal but large values can produce some wild effects.

Start Weight ( Min: 1.0 Max: 50.0 Default: 1.0 )
End Weight ( Min: 1.0 Max: 50.0 Default: 1.0 )
Relative weighting of the intermediate frames near the start/end of the between frames interval. Changing the ratio of these values will make the blur denser near the start or end of the motion. Equal values whether high or low will result in the same constant weighting.

REGION OF INTEREST
The area defined is the area of the image that will be processed. There is a little latitude. Remember, the smaller the area the faster the processing.

Box Corner1 XY and Box Corner2 XY define the ROI box.
Only the region defined by the ROI will used to create the motion blur. Care should be taken to encompass the required area throughout the sequence.

Notes:

• the first frame processed will not be blurred, it is analysing the frame to compare it to the next. Therefore if you have to restart processing in the middle of a sequence go back an extra frame.
• keep the ROI as small as possible to speed up processing.
• large movements may need more steps for smoothness.
• make sure the ROI covers both the next frame position as well as current frame position.
• things close to the edge will be tricky to blur successfully - minimise the Lthresh and Scale.
• if you are trying to blur images with very little texture e.g. a computer generated graphic, add a little random noise to each frame. Something you cannot notice, but mathematically it will help the analysis of the movement.