MaxLabels for Amazon Rekognition Video not working

The MaxLabels argument works on the Amazon Rekognition Image but not using a Video. I have this PHP payload I use:

'ClientRequestToken' => (string)Str::uuid(),
            'JobTag' => VideoOperations::REKOGNITION_LABEL_DETECTION,
            'NotificationChannel' => [
                'RoleArn' => config('rekognition.notification_channel.role_arn'),
                'SNSTopicArn' => config('rekognition.notification_channel.sns_arn'),
            ],
            'MinConfidence' => config('rekognition.min_confidence'),
            'MaxLabels' => config('rekognition.max_labels'),
            'Video' => [
                'S3Object' => [
                    'Bucket' => config('rekognition.bucket'),
                    'Name' => $video->filename
                ],
            ]

I checked the official github AWSDocs Rekognition samples and could not find an implementation of the MaxLabels on a Video Rekognition. Is it not supported? https://github.com/awsdocs/amazon-rekognition-developer-guide/search?q=MaxLabels