US 11,758,241 B2
Method and apparatus for playing back video in accordance with requested video playback time
Hyun Ho Kim, Seongnam-si (KR); Jae Young Shin, Seongnam-si (KR); Young In Yun, Seongnam-si (KR); and Jeong Koo Kang, Seongnam-si (KR)
Assigned to HANWHA TECHWIN CO., LTD., Seongnam-si (KR)
Filed by HANWHA TECHWIN CO., LTD., Seongnam-si (KR)
Filed on Jul. 20, 2021, as Appl. No. 17/380,407.
Application 17/380,407 is a continuation of application No. PCT/KR2019/004215, filed on Apr. 9, 2019.
Claims priority of application No. 10-2019-0015438 (KR), filed on Feb. 11, 2019.
Prior Publication US 2021/0352378 A1, Nov. 11, 2021
Int. Cl. H04N 21/2387 (2011.01); H04N 21/6587 (2011.01); H04N 21/438 (2011.01); H04N 21/472 (2011.01)
CPC H04N 21/6587 (2013.01) [H04N 21/2387 (2013.01); H04N 21/438 (2013.01); H04N 21/47217 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of providing video data, performed by a video providing server, the method comprising:
receiving, from a video playback apparatus, a video playback time of a video;
detecting, in the video, an intra frame which is positioned before a first frame corresponding to the video playback time and is closest to the first frame among intra frames in the video;
transmitting frames from the intra frame to a second frame, the second frame being positioned immediately before the first frame, without speed limitation; and
transmitting a frame from the first frame in accordance with a playback speed of the video playback apparatus,
wherein the transmitted frames contain information indicating whether the video playback apparatus needs to only decode the transmitted frames or both decode and play back the transmitted frames, and
wherein the information is recorded in headers of the transmitted frames.