Method to match input and output timestamps in a video encoder and advertisement inserter

a video encoder and advertisement inserter technology, applied in the field of video encoder and advertisement inserter input and output timestamp matching, can solve the problems of frame synchronization of pts of the stream output of the transcoder with the pts input to the decoder, and achieve the effect of reducing the loss of pts of the stream output of the transcoder

Inactive Publication Date: 2013-04-04
GOOGLE TECHNOLOGY HOLDINGS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
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Benefits of technology

The present invention has certain features and advantages that are described in the patent text. These features and advantages can be realized and obtained by using the instruments and combinations specifically outlined in the patent. The "technical effects" of the invention are not explicitly stated in this text, but they are intended to be revealed through the description and appended claims, or through practice of the invention as set forth herein.

Problems solved by technology

However, due to the decoding and re-encoding and to audio splicing, which involves audio delay, in order to insert advertisements, the PTS of the stream output by the transcoder may lose synchronization with the PTS input to the decoder and with the frame.

Method used

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Embodiment Construction

[0011]Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The features and advantages of the invention may be realized and obtained by means of the instruments and combinations particularly pointed out in the appended claims. These and other features of the present invention will become more fully apparent from the following description and appended claims, or may be learned by the practice of the invention as set forth herein.

[0012]Various embodiments of the invention are discussed in detail below. While specific implementations are discussed, it should be understood that this is done for illustration purposes only. A person skilled in the relevant art will recognize that other components and configurations may be used without parting from the spirit and scope of the invention.

[0013]The present invention comprises a variety of embodim...

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Abstract

A method, a video processing system, and an electronic device are disclosed. A video transcoder may decode a compressed video data frame creating a decoded video data frame. The video transcoder may embed a network presentation timestamp in the decoded video data frame. The video transcoder may re-encode the decoded video data frame creating a transcoded video data frame. A field programmable gate array may compare the network presentation timestamp with a transcoder presentation timestamp to determine a timestamp offset.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a method and system for decoding and encoding video data frames. The present invention further relates to calculating a timestamp offset.BACKGROUND[0002]A video transcoder may receive a compressed video data frame to be converted into a format usable by a media device. The video transcoder may decode the compressed video data frame into an uncompressed intermediate format. The video transcoder may then re-encode the uncompressed intermediate video frame into a new format usable by the media device.[0003]Data channels passed through the transcoder may have Presentation timestamps (PTSs) embedded in the data to trigger time critical events, for example, advertisement insertion and data display. However, due to the decoding and re-encoding and to audio splicing, which involves audio delay, in order to insert advertisements, the PTS of the stream output by the transcoder may lose synchronization with the PTS input to the decod...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04N7/26H04N7/24
CPCH04N21/4305H04N21/440218H04N21/44016H04N21/4307H04N21/43072
Inventor NEMIROFF, ROBERT S.CHEN, JING YANGHU, YENDOXUE, SHANHUA
Owner GOOGLE TECHNOLOGY HOLDINGS LLC
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