/// <summary>
/// 开始录制MP4，，同一个成员一次只允许一个MP4录制文件，在通话开始的时候才有实际数据
/// </summary>
/// <param name="path">文件录制路径</param>
/// <param name="recordInfo">json扩展封装类，见NIMVChatMP4RecordJsonEx</param>
/// <param name="cb">结果回调</param>
/// <returns>无返回值</returns>
public static void StartRecord(string path, NIMVChatMP4RecordJsonEx recordInfo, NIMVChatMp4RecordOptHandler cb)
{
if (recordInfo == null)
{
recordInfo = new NIMVChatMP4RecordJsonEx();
}
string json_extension = recordInfo.Serialize();
var ptr = NimUtility.DelegateConverter.ConvertToIntPtr(cb);
VChatNativeMethods.nim_vchat_start_record(path, json_extension, VChatMP4RecordOptCb, ptr);
}
/// <summary>
/// 开始录制MP4，一次只允许一个录制文件，在通话开始的时候才有实际数据。状态变化见nim_vchat_cb_func通知，type值对应kNIMVideoChatSessionTypeMp4Notify。
/// </summary>
/// <param name="path">文件录制路径</param>
/// <param name="json_extension">无效扩展字段</param>
/// <param name="cb"></param>
/// <param name="user_data">APP的自定义数据，SDK只负责传回给回调函数cb，不做任何处理</param>
public static void StartRecord(string path, string json_extension, nim_vchat_mp4_record_opt_cb_func cb, IntPtr user_data)
{
var ptr = NimUtility.DelegateConverter.ConvertToIntPtr(cb);
VChatNativeMethods.nim_vchat_start_record(path, json_extension, VChatMP4RecordOptCb, ptr);
}
