$this->reportProgress(25);
        //然后调用伟大的python代码生成视频
        $this->logDebug($this->sellerNick, __METHOD__, '执行shell脚本', 'python ' . $this->PYTHON_PROG . ' ' . $tmp_path);
        $i = 0;
        while ($i < 3) {
            $shell_output = shell_exec('python ' . $this->PYTHON_PROG . ' ' . $tmp_path);
            if (file_exists($tmp_path . '/clips.avi')) {
                break;
            } else {
                $i++;
            }
        }
        if (!file_exists($tmp_path . '/clips.avi')) {
            $this->logDebug($this->sellerNick, __METHOD__, '运行python生成视频失败' . $tmp_path . '/clips.avi', $shell_output);
            //文件不存在，那么直接报错好了
            $this->cleanTempDir($tmp_path);
            throw new VideonotexistsException(500, '生成视频时发生错误', 500, '加载视频效果时发生错误,请联系客服解决');
        }