php - 尝试创建 zencoder / s3 视频的缩略图

Question

每当我运行代码生成缩略图时，它都会生成视频开头的缩略图，即使我在视频中间放了一些时间

$body = [
        'input' => $inputUrl,
        'outputs' => [
            [
                'thumbnails' => [
                    [
                        "label" => "first",
                        'base_url' => $outputUrl,
                        'number' => 1,
                        'times' => [20],
                    ],
                ],
                'notifications' => [
                    'url' => "{$notificationUrl}",
                    'format' => 'json',
                ],
            ],
        ],
    ];