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Method and device for adjusting attributes of video stream

A technology for adjusting devices and video streams, applied in the field of communication, can solve problems such as video stream packet loss, multiple video streams occupying network bandwidth, etc.

Active Publication Date: 2021-05-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Video streams are transmitted based on the Internet Protocol (IP). Since multiple video streams can be transmitted on the IP line at the same time, multiple video streams occupy the network bandwidth, which may cause network packet loss in the current video stream.

Method used

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  • Method and device for adjusting attributes of video stream
  • Method and device for adjusting attributes of video stream
  • Method and device for adjusting attributes of video stream

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0127] Embodiments 1 to 6 can be applied to a video conferencing system that communicates between terminals through an MCU, such as Figure 1 to Figure 3 The video conference system shown. Embodiments 1 and 2 describe methods for adjusting the attributes of video streams in the case of uplink packet loss. Here, the uplink packet loss situation refers to the packet loss situation of the received video stream sent by the sending device as determined by the MCU. Embodiments 3 to 6 describe methods for adjusting attributes of video streams in the case of downlink packet loss. Here, the downlink packet loss situation refers to the packet loss situation of the received video stream sent by the MCU determined by the receiving end device. As an example, the packet loss rate may be used to characterize the packet loss situation.

Embodiment 7

[0128] Embodiment 7 and Embodiment 8 can be applied to a video conferencing system in which terminals do not communicate through an MCU, such as Figure 4 The video conference system shown.

[0129] Embodiment one

[0130] In this embodiment, the determination of target attribute information by the MCU in an uplink packet loss scenario is described as an example.

[0131] Such as Figure 8A As shown in , it is an interactive schematic diagram of a method for adjusting the attributes of a video stream provided by the embodiment of the present application. Figure 8A The illustrated method may include the steps of:

[0132] S301: The sending end device sends a first video stream with source attribute information of a first conference site to the MCU. The sending end device is a terminal of the first conference site. Wherein, the source attribute information may be the attribute information of the first video stream sent when this step is executed, and is not limited to spec...

Embodiment 2

[0144] In this embodiment, the determination of the target attribute information by the sender device in the scenario of uplink packet loss is described as an example.

[0145] Such as Figure 8B As shown in , it is an interactive schematic diagram of a method for adjusting the attributes of a video stream provided by the embodiment of the present application. Figure 8B The illustrated method may include the steps of:

[0146] S401-S402: refer to the above-mentioned S301-S302.

[0147] S403: The MCU sends the packet loss rate of the first video stream with source attribute information to the sending device.

[0148] S404: The sending end device determines the scene of the first conference site according to the image content of the first video stream with the source attribute information.

[0149] The embodiment of the present application does not limit the execution sequence of S401-S403 and S404. For example, S401-S403 is executed first and then S404 is executed, or S404...

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PUM

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Abstract

The invention discloses a method and a device for adjusting attributes of a video stream, relates to the technical field of communication, and helps to realize that the video stream adapts to the change of network bandwidth so as to reduce network packet loss. The method comprises the steps that an attribute adjusting device determines a scene of a first meeting place according to image content in a first video stream of the first meeting place; the attribute adjustment device determines target attribute information of the first video stream according to the packet loss rate of the first video stream and the scene of the first meeting place; the target attribute information comprises at least one of a target resolution and a target frame rate; and the attribute adjustment device adjusts the attribute information of the first video stream into the target attribute information.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a method and a device for adjusting attributes of video streams. Background technique [0002] Video conferencing enables users to hear the other party's voice and see the other party's image when communicating in different places, which enhances the sense of reality, intimacy and presence of the communication. Video conferencing can be used in military, political, economic, educational, health and other fields. [0003] In a video conference, a terminal participating in a video conference collects information (such as voice, image, and data) of a conference site, and converts the information into a video stream for transmission. The video stream is transmitted based on the Internet Protocol (IP). Since multiple video streams can be transmitted on the IP line at the same time, the multiple video streams occupy the network bandwidth, which may cause network...

Claims

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Application Information

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IPC IPC(8): H04N7/15H04N21/4402
CPCH04N7/15H04N7/152H04N21/440263H04L65/752H04L65/403H04L65/80H04L65/765
Inventor 庄松海
Owner HUAWEI TECH CO LTD