src/Upyun/Upyun.php
public function avMeta($file)
    {
        $p = new Api\SyncVideo($this->config);
        return $p->process([
            'source' => $file,
        ], '/avmeta/get_meta');
    }
public function avMeta($file)
    {
        $p = new Api\SyncVideo($this->config);
        return $p->process([
            'source' => $file,
        ], '/avmeta/get_meta');
    }
获取音视频文件元信息
@param string $file 又拍云云存储的中的音视频文件路径

@return array 见 [获取音视频文件信息 - 响应](http://docs.upyun.com/cloud/sync_video/#_16)