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Device for realizing ultrahigh-definition video format conversion and image-text superposition

A format conversion and clear video technology, applied in the field of ultra-high-definition video, can solve problems such as huge data volume, high hardware requirements, and high bandwidth requirements, and achieve the effects of ensuring security, simplifying functions, and improving security

Pending Publication Date: 2022-07-05
北京广播电视台 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional 8K ultra-high-definition IP signal output uses the SMPTE-2110-20 protocol, which belongs to the uncompressed standard, and has high requirements for hardware and a huge amount of data, as well as high requirements for bandwidth.

Method used

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  • Device for realizing ultrahigh-definition video format conversion and image-text superposition
  • Device for realizing ultrahigh-definition video format conversion and image-text superposition
  • Device for realizing ultrahigh-definition video format conversion and image-text superposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: A device for realizing ultra-high-definition video format conversion and graphics and text overlay, including an external signal input module, a media file management module, a signal conversion codec module, a graphics and text overlay module, an input and output control rendering special effect engine, a dual node Storage cluster security module and master control module; the external signal input module, media file management module, signal conversion codec module, graphic overlay module, input and output control rendering special effect engine, dual-node storage cluster security module are independent of the broadcast server , the general control module includes a multi-channel SMPTE-2110-22 signal protocol stream signal output module, and connects different playback terminals through the multi-channel SMPTE-2110-22 signal protocol stream signal protocol stream output module;

[0049] The external signal input module is used to access signals with unres...

Embodiment 2

[0050] Embodiment 2: On the basis of Embodiment 1, the media file management module is configured to divide the video file into small blocks for atomic storage, and the size division of the small blocks can just ensure a completed segment of the video.

Embodiment 3

[0051] Embodiment 3: On the basis of Embodiment 2, the media file management module is used to separate the metadata of the video file from the video picture data to avoid competition between metadata I / O and data I / O; O as the input and output model of the file management system to read and write data, and then store the video material in each block through disk task scheduling, which is managed by disk management. At the physical level of disk storage, video files are stored in each block. Each block is stored, stored in different parts of the disk, indexed with metadata, operated during reading and writing, and the disk data file index is managed by file management.

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PUM

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Abstract

The invention discloses a device for realizing ultrahigh-definition video format conversion and image-text superposition, which belongs to the field of ultrahigh-definition videos and comprises an external signal input module, a media file management module, a signal conversion coding and decoding module, an image-text superposition module, an input / output control rendering special effect engine, a double-node storage cluster security module and a master control module. The external signal input module, the media file management module, the signal conversion coding and decoding module, the image-text superposition module, the input and output control rendering special effect engine and the dual-node storage cluster security module are independent of a broadcast server, and the master control module comprises a multi-path SMPTE-2110-22 signal protocol stream signal output module. And different playing terminals are connected through the multi-path SMPTE-2110-22 signal protocol stream output module. According to the invention, SUVC and SMPTE-2110-22 protocol streams are supported, the reading efficiency and performance are improved, and lightweight deployment of the broadcast server is realized.

Description

technical field [0001] The invention relates to the technical field of ultra-high-definition video, and more particularly, to a device for realizing format conversion of ultra-high-definition video and superimposition of graphics and text. Background technique [0002] like figure 1 As shown, TV stations currently mainly use two kinds of ultra-high-definition signal sources: [0003] 1. External signal [0004] Common external signals, such as uncompressed original digital signals transmitted by cameras through professional cables (SDI), also called SDI signals, are output after superimposing graphics and text on baseband signals through the All in One broadcast server. [0005] 2. Broadcast server file broadcast signal [0006] The broadcast signal of the broadcast server file passes through the production system, and is first transcoded and synthesized into a finished file in the broadcast format. After passing the film review of MD5 verification, automatic technical re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/265H04N5/268H04N5/775H04N7/01
CPCH04N5/265H04N5/268H04N7/0125H04N5/775
Inventor 王立冬金强肖春艳李硕贾玉升史梦云王炜王维
Owner 北京广播电视台