seekRelative method
- Duration delta
Implementation
void seekRelative(Duration delta) {
final controller = state.videoPlayerController;
if (controller == null || !controller.value.isInitialized) return;
final current = controller.value.position;
final duration = controller.value.duration;
var target = current + delta;
if (target < Duration.zero) target = Duration.zero;
if (target > duration) target = duration;
controller.seekTo(target);
}