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Audio-video file splicing method and audio-video file splicing device

A technology for audio files and video files, applied in the field of audio and video processing, can solve problems such as image quality degradation, and achieve the effect of saving costs and increasing image quality

Inactive Publication Date: 2013-12-18
SUMAVISION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and device for splicing audio and video files to solve the problem of image quality degradation caused by decoding and re-encoding the original program in the digital program insertion technology in the related art

Method used

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  • Audio-video file splicing method and audio-video file splicing device
  • Audio-video file splicing method and audio-video file splicing device
  • Audio-video file splicing method and audio-video file splicing device

Examples

Experimental program
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Embodiment 1

[0032] The invention provides a method for splicing audio and video files, preferably, such as figure 2 As shown, the method includes the following steps:

[0033] S202. Obtain the video out point and audio out point of the first TS (Transport Stream, transport stream) streaming audio and video file indicated by the splicing instruction;

[0034] Preferably, the first TS stream audio and video file is the TS stream data of the main audio and video file, which can also be called TS1. Preferably, during the audio and video output process, TS1 is decapsulated to the ES (Elementary Stream, elementary stream) layer, And save the input ES data of TS1 in the main video PIP (abbreviation of PIPE) and main audio PIP.

[0035] S204, acquire the video in point and the audio in point in the second TS stream audio and video file indicated by the splicing instruction;

[0036] Preferably, the second TS stream audio and video file is the TS stream data of the spliced ​​video file, which c...

Embodiment 2

[0049] On the basis of Embodiment 1, this embodiment provides an audio and video file splicing device, specifically, as Figure 4 As shown, the device includes:

[0050] The first obtaining unit 402 is used to obtain the video out point and the audio out point of the first TS stream audio and video file indicated by the splicing instruction; preferably, the first TS stream audio and video file is the TS stream data of the main audio and video file, also It can be called TS1. Preferably, during the audio and video output process, TS1 is decapsulated to the ES layer, and the input ES data of TS1 is saved in the main video PIP and the main audio PIP.

[0051] The second obtaining unit 404 is used to obtain the video entry point and the audio entry point in the second TS stream audio and video file indicated by the splicing instruction; preferably, the second TS stream audio and video file is the TS stream data of the spliced ​​video file, also It can be called TS2. Preferably, d...

Embodiment 3

[0064] On the basis of the above-mentioned embodiment 1 and embodiment 2, this embodiment also provides an audio and video file splicing system, specifically, as Figure 8 As shown, in this system, the audio and video source files to be spliced ​​are processed by the video and audio material processor to be spliced, for example, the content and format of the source files are modified to ensure that they match the format of the main program, and the output is the target video file ;The output target video file will be encapsulated into a playable TS stream (TS1) through the video and audio player to be spliced. )distinguish. The parameters of splicing are controlled by the splicing controller, such as time parameters (start time, stop time, duration), program parameters, etc., and the seamless splicer combines the encapsulated TS stream with other TSs according to the control parameters of the splicing controller Stream into (TS2) line splicing, and output the spliced ​​TS str...

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Abstract

The invention discloses an audio-video file splicing method and an audio-video file splicing device. The audio-video file splicing method includes acquiring a video out-point and an audio out-point of a first TS (transport stream) audio-video file instructed by a splicing command, acquiring a video in-point and an audio in-point of a second TS audio-video file instructed by the splicing command, judging whether the video out-point satisfies a first preset condition or not and whether the video in-point satisfies a second preset condition or not, and if yes, taking the video out-point as a video file splicing out-point and taking the video in-point as a video file splicing in-point to perform video splicing. By the audio-video file splicing method and the audio-video file splicing device, the problem of lowered image quality due to fact that original programs are decoded and recoded in a digital program insertion technique in related techniques is solved, effect of improving quality of spliced images is achieved, and further, cost is saved.

Description

technical field [0001] The invention relates to the field of audio and video processing, in particular to a method and device for splicing audio and video files. Background technique [0002] Digital program insertion is a digital splicing technology for splicing MPEG (Moving Picture Experts Group) programs into other MPEG programs. It is widely used in the field of audio and video processing. [0003] In the existing digital program insertion technology, the implementation method of "decoder + video and audio inserter + encoder" is generally adopted, specifically as figure 1 As shown, when performing digital program insertion, use SPTS (single program transport stream, single program stream) as the input source, and sequentially pass through multiple equipment cascaded decoders, video and audio inserters, and encoders to realize digital program insertion. This method requires all decoding and all encoding of the program stream, and the process is relatively complicated, es...

Claims

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Application Information

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IPC IPC(8): H04N21/236H04N21/44
Inventor 王智
Owner SUMAVISION TECH CO LTD