Device for controlling synchronous double-disc burning

Abstract

The invention provides a device for controlling synchronous double-disc burning in synchronous audio and video recording systems. The device is used for burning audio and video code streams into at least two discs and comprises a video coding module, a video recording module and a burning module, wherein the video coding module is used for coding audio and video frequencies, the video recording module is used for writing the audio and video code streams into a hard disc for storage, the burning module is used for burning burning images into at least two discs, audio and video images burnt into one of the discs consist of multiple burning images, and the audio and video images correspond to the audio and video code streams. The device for controlling the synchronous double-disc burning is characterized by further comprising a burning disc-distribution module used for subjecting the audio and video code streams to disc-distribution treatment according to configuration parameters. Contents of two burned discs are kept coincident, so that one disc can be used as an evidence, and the other one can be used as a backup for consultation.

Description

technical field [0001] It relates to the field of data storage and backup, especially in a synchronous audio and video recording system, so that the audio and video video data can be synchronously burned into two optical discs, and the contents are consistent. Background technique [0002] Simultaneous recording of dual discs requires the content of the discs to be consistent. Once a recording error cannot be recovered by retrying or the disc is damaged, replace the disc with a new disc and start recording from the time when the disc with the recording error started, so as to ensure that the content of the disc remains consistent after the disc is burned out normally. Such a retry burning mechanism will lead to waste of resources. [0003] Usually, we superimpose the disc serial number Disc1, Disc2 and other subtitles on the video data and burn it to the disc. When playing back the disc audio and video, we can accurately judge which disc is the first disc of this burning tas...

AI Technical Summary

Problems solved by technology

For the setting of recording time, directly change the recording bit rate and affect the image quality. Generally, the lower the recording time is, the higher the image quality and definition will be. Otherwise, the image quality will be worse.

But in fact, the actual code rate cannot be kept strictly consistent with the set value, and generally fluctuates around the set value

To a certain extent, it leads to the inaccuracy of disk division. There are two situations: when the encoding acquisition image changes greatly, the actual encoding rate is much higher than the set value, then the video generated in a fixed period of time is much larger than the theoretical one. For example, the recording time of 2 hours can only be recorded for 1.5 hours or less, which will cause disc subtitles to lag; on the contrary, the image fluctuations are relatively small, and the actual bit rate is lower than the set value, which can ensure accurate subtitles. disk, but it causes a waste of disk space, and may actually burn more video data

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