优化录像下载。 支持八倍速（设备支持的最高速度）下载

src/main/java/com/genersoft/iot/vmp/gb28181/service/impl/PlayServiceImpl.java

@@ -390,6 +390,7 @@ public class PlayServiceImpl implements IPlayService {
         rtpServerParam.setTcpMode(tcpMode);
         rtpServerParam.setOnlyAuto(false);
         rtpServerParam.setDisableAudio(!channel.isHasAudio());
+
         SSRCInfo ssrcInfo = receiveRtpServerService.openRTPServer(rtpServerParam, (code, msg, result) -> {
 
             if (code == InviteErrorCode.SUCCESS.getCode() && result != null && result.getHookData() != null) {
@@ -1055,6 +1056,8 @@ public class PlayServiceImpl implements IPlayService {
         InviteInfo inviteInfo = InviteInfo.getInviteInfo(device.getDeviceId(), channel.getId(), ssrcInfo.getStream(), ssrcInfo, mediaServerItem.getId(),
                 mediaServerItem.getSdpIp(), ssrcInfo.getPort(), device.getStreamMode(), InviteSessionType.DOWNLOAD,
                 InviteSessionStatus.ready, true);
+        inviteInfo.setStartTime(startTime);
+        inviteInfo.setEndTime(endTime);
 
         inviteStreamService.updateInviteInfo(inviteInfo);
         try {