Remove an Object in Frame in Avid

Avid's Boris Continuum Complete AVX allows users to remove an objects from a frame, and this is done via the Motion Key filter. Users need later versions of Avid to use this filter. Beginners should be able to learn this skill if they follow some step-by-step instructions.

Step 1: Understanding Motion Key Filter

The Motion Key filter allows users to successful remove any moving object, especially if it's in the foreground. Basically, users will "paint out" objects using Optical Flow technology.

Optical Flow allows footage to be fast-forwarded, reversed, slowed down or sped up. It can also be used to manipulate or reconstruct missing frames in video sequences, and this technology does this via motion vector fields. The Motion Key filter combines this technology to overlay the scene and blot out the object that needs to be removed.

Step 2: Importing and Splicing the Clip

The first step to editing the video sequence is to open up the clip. Users should just import it into one of the Bins. Next, users need to add the video sequence to the Timeline. This is known as splicing. Once open the user should be able to see the sequence in both the Source and Record Windows of Avid.

To ensure that it is the correct clip, users can play the clip and figure out the location of the object that needs to be removed. Now, it's time to start editing the clip.

Step 3: Using Avid's Effects to Remove an Object

Now, users should go into the Tools Menu and open up the Effect Palette. From this palette, select the BCC Keys and Matte effect from the menu. It should be located on the left-hand side of the screen.

Next, users need to drag the BCC Motion Key effect icon into the Record Window. This window is where all the editing will take place, and then changes will be reflected in the Source Window.

Users should changes to the Effects mode, and this will allow them access to the Setup Region, which allows users to choose a type of selection shape. Depending on the object, this could be round, rectangular or the like. Pick a shape that best reflects the shape of the item. Move the clip back to the beginning using the Area Scale and Area Aspects controls.

Step 4: Adding Keyframes

Users will have to add keyframes to the timeline, and this is done via the Add Keyframe button. Next, let the sequence play for a few seconds until the selection shape encompasses the object a bit more. Add another keyframe. Continue these steps until the object has been selected throughout the entire sequence or until the sequence has ended.  

Step 5: Add a Mask Filter

Go into the Area Selection, and select Show Mask. This will help the user determine whether or not the object can be removed. If the selection is clear, then the object cannot be removed. If it's red, then it can be removed entirely. Blue means that there's a high probably that it can be removed.

Now, change the Area Selection to remove foreground, and Avid will start rending the clip. Once completely rendered, play the video sequence to ensure that the object has been removed.