The video track opacity can be adjusted by adding and manipulating the keyframes (KF) using the rubber banding Timeline feature.

Note
The objects added to the V1 video track are always non-transparent, so video opacity adjustment is not available within the V1 track.

By default, all V1 video tracks are with disabled "Alpha transparency" mode. The corresponding information is displayed in the context menu while right-clicking the V1 track name:

Alpha transparency for V1

For other video tracks the "Alpha transparency" mode is disabled by default. To enable "Alpha transparency" mode for a video track, right-click the required track name and selected the "Alpha transparency" option from the context menu:

Alpha transparency

If the "Alpha transparency" is enabled, the corresponding "AT" icon will be displayed next to the track name, allowing to work with video opacity rubber banding:

Alpha mode

If you drag-and-drop a Type template or an image into a regular track without "Alpha transparency" mode enabled, the following message appears:

Alpha mode message

The following options are available:

Yes button

Add a Type template or an image with "Alpha transparency" mode enabled.

Yes_always button

Add a Type template or an image with "Alpha transparency" mode enabled for this and all subsequent operations.

No button

Add a Type template or an image without "Alpha transparency" mode enabled.

no_always button

Add a Type template or an image without "Alpha transparency" mode enabled for this and all subsequent operations.

Once drag-and-dropped with "Alpha transparency" mode enabled, the image will be displayed on the timeline allowing to work with the video opacity rubber banding:

Alpha mode timeline

To start working with the video opacity rubber banding, do the following:

1. Use the Ctrl+B keyboard shortcut or enable the "Rubber band" command in the main Timeline menu:

rubber_band_menu_command The rubber band line will be displayed on V2, V3.

2. Move the time slider to the position where you want to change the opacity.

video_key frame

3. Press the "Add/Remove keyframe" button or use the N shortcut. The new keyframe appears on all the objects of activated tracks at the current position. The track mode is automatically changed to support transparency with the corresponding icon displayed next to the track name:

Keyframes

4. Drag the key to obtain the desired effect. The opacity gain will be shown in percentage as a tool-tip during dragging:

opacity_gain_tool-tip

The video opacity change will be immediately reflected in Sequence Viewer.