Patent ID: 11870948
Assignee: DOLBY LABORATORIES LICENSING CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A method to playback a video stream with variable frame rate, the method performed by a processor and comprising:
receiving the video stream comprising video pictures and metadata, wherein the metadata comprise syntax parameters for enabling displaying the video pictures at a variable frame rate, wherein the syntax parameters comprise a picture-timing-present flag, a picture-source-type flag, and a picture-position-type flag; and
displaying the video pictures according to the syntax parameters in the metadata, wherein for a current picture among the video pictures:
if detecting that the picture-timing-present flag is set to 1, then
generating a time information of duration of presentation on a display for the current picture based on a picture presentation time parameter in the metadata;
if detecting that the picture-source-type flag is set to 1, then
generating picture source information for the current picture based on a picture source parameter in the metadata, wherein the picture source parameter indicates one of an original picture, a replica of an original picture, or an interpolated picture; and
if detecting that the picture-position-type flag is set to 1, then
generating picture position in a scene information for the current picture based on one or more picture position parameters in the metadata.