1.首先要安装ffmpeg
2.直接上代码
1 /** 2 * 上传视频 3 * @return mixed 4 * @author suancai 5 */ 6 public function upload_video() 7 { 8 $files = $_FILES[\'video\']; 9 if (!$files[\'name\']) { 10 $this->error(\'请选择视频\'); 11 } 12 $video = \'\'; 13 // if (!$files["error"]) { 14 //判断上传文件类型 15 // if (($files["type"] == "mp4") { 16 //防止文件名重复 17 $filename = "./uploads/video/" . time() . $files["name"]; 18 //检查文件或目录是否存在 19 if (!file_exists($filename)) { 20 $res = move_uploaded_file($files["tmp_name"], $filename);//将临时地址移动到指定地址 21 $fileurl = substr($filename, 1); 22 } 23 //}else{ 24 // $this->error(\'视频类型错误\',$files["name"]); 25 // } 26 $server = ($this->auth->isHTTPS() ? \'https://\' : \'http://\') . $_SERVER[\'HTTP_HOST\']; 27 $url = substr($fileurl, 1); 28 $end[\'videoUrl\'] = $url; 29 $end[\'videoImg\'] = $this->getCoverImages($end[\'videoUrl\'], $server); 30 $this->success(\'上传成功\', $end); 31 // } 32 } 33 function getCoverImages($fileUrl, $server) 34 { 35 $result = array(); 36 if (!empty($fileUrl)) { 37 $filePath = str_replace($server, "", $fileUrl); 38 if (is_file($filePath)) { 39 $result = $this->execCommandLine($filePath, $server); 40 } 41 } 42 return $result; 43 } 44 45 function execCommandLine($file, $server) 46 { 47 $result = array(); 48 $pathParts = pathinfo($file); 49 $filename = $pathParts[\'dirname\'] . "/" . $pathParts[\'filename\']; 50 $times = 2；51 $destFilePath = $filename . ".jpg"; 52 $command = "/usr/bin/ffmpeg -i {$file} -y -f image2 -ss {$times} -vframes 1 -s 640x360 {$destFilePath}"; 53 exec($command); 54 $destUrlPath = str_replace("./uploads/video/", $server, $destFilePath); 55 return $destFilePath; 56 }