Caption Alignment

Controls the vertical and horizontal alignment of burn-in captions within the video frame.

video-caption-align accepts a comma-separated pair of vertical and horizontal alignment values.

Vertical values:

• top
• middle
• bottom (default)

Horizontal values:

• left
• center (default)
• right

video-caption-align=bottom,center

Use video-caption-margin-x and video-caption-margin-y to control the inset from the specified edges.