text: //
  //  AVIMVideoMessage.h
  //  AVOSCloudIM
  //
  //  Created by Qihe Bian on 1/12/15.
  //  Copyright (c) 2015 LeanCloud Inc. All rights reserved.
  //
  
  #import "AVIMTypedMessage.h"
  
  @interface AVIMVideoMessage : AVIMTypedMessage <AVIMTypedMessageSubclassing>
  @property(nonatomic, readonly)uint64_t size;  //文件大小，单位：字节
  @property(nonatomic, readonly)float duration;  //时长，单位：秒
  @property(nonatomic, strong, readonly)NSString *format;  //格式，如：mp4，m4v等
  
  @end
  