children property

List<Widget>? children

add your widget

AspectRatio(
  aspectRatio: 16 / 9,
  child: VideoBox(
    controller: controller,
    children: <Widget>[
      Align(
        alignment: Alignment(-0.5, 0),
        child: IconButton(
          iconSize: 40,
          disabledColor: Colors.white60,
          icon: Icon(Icons.skip_previous),
          onPressed: canPrev() ? prevVideo : null,
        ),
      ),
      Align(
        alignment: Alignment(0.5, 0),
        child: IconButton(
          iconSize: 40,
          disabledColor: Colors.white60,
          icon: Icon(Icons.skip_next),
          onPressed: canNext() ? nextVideo : null,
        ),
      ),
    ],
  ),
),

Implementation

final List<Widget>? children;