公开(公告)号：US20180183849A1

公开(公告)日：2018-06-28

申请号：US15613557

申请日：2017-06-05

Applicant: Hanwha Techwin Co., Ltd.

Inventor： Jae Young SHIN ,  Yun Seok KWON ,  Hyun Ho KIM ,  Kyung Duk KIM ,  Min Jung SHIM

IPC: H04L29/06

CPC classification number: H04L65/608 ,  H04L67/42

Abstract: A real-time video streaming method between a server and a client according to a real-time transport protocol (RTP)/real-time streaming protocol (RTSP) standard protocol, including transmitting a DESCRIBE command including a Require header from a client to a server, wherein the client and the server support the Require header, receiving session description protocol (SDP) information from the server in response to the DESCRIBE command, receiving, at the client, a video from the server according to the RTP/RTSP standard protocol, in response to an encoding attribute of the video transmitted from the server to the client being changed, describing a changed encoding attribute in an RTP extension header of an RTP packet when the RTP packet is first transmitted in an RTP payload type determined according to the changed encoding attribute, and changing, at the client, a decoding setup based on the changed encoding attribute in the RTP extension header.

公开(公告)号：US20210352378A1

公开(公告)日：2021-11-11

申请号：US17380407

申请日：2021-07-20

Applicant: HANWHA TECHWIN CO., LTD.

Inventor： Hyun Ho KIM ,  Jae Young SHIN ,  Young In YUN ,  Jeong Koo KANG

IPC: H04N21/6587 ,  H04N21/472 ,  H04N21/2387 ,  H04N21/438

Abstract: A video playback method is provided. According to the method, a frame before requested video playback time is transmitted and received without speed limitation to perform decoding without video play back, and a frame after the video playback time is transmitted and received in accordance with playback speed to perform decoding and video playback, thereby quickly playing back a video in accordance with video playback time requested by a user without changing Group Of Video (GOV) setting or codec setting.