CN105575409A - Method for writing MP4 file into optical disc under embedded host computer - Google Patents

Abstract

The invention discloses a method for writing an MP4 file into an optical disc under an embedded host computer. The method comprises the steps as follows: a user starts a real-time optical disc writing or back-up function through a UI; the embedded host computer formats the optical disc into a UDF format; the embedded host computer automatically calculates the available capacity of the optical disc according to the type of the optical disc put by the user, converts audio data and video data into MP4 data, and then writes the MP4 data into the optical disc until writing of the optical disc is ended; and after writing is ended, the embedded host computer actively carries out validity check on the optical disc. The method can support reading of various operation systems and can support writing of a single file which exceeds 2G in the optical disc; the embedded host computer can support the optical discs with different types and different capacities; and only one MP4 file exists in the written optical disc, so that the universality, the integrity and the continuity of the file are achieved.

Description

The method of CD burning MP4 file under embedded host

Technical field

The invention belongs to the technical field of CD burning, particularly relate to a kind of method of CD burning MP4 file under embedded host.

Background technology

High definition embedded hearing main frame, the embedded court's trial main frame of high definition are the special industry main frames developed for public security organs' industry, this main frame to support SDI(serialdigitalinterface, digital component serial line interface) revolving die is intended and network high-definition signal mixes access, and its vision signal is carried out the local embedded device exporting echo and the storage of Video coding this locality, in real time CD burning and network real-time video and propagate.

High definition embedded hearing main frame, the embedded court's trial main frame of high definition are used for the vision signal that display embedded device in real time collects, and vision signal are carried out video recording storage, when user needs, can carry out real-time imprinting and back up recording function afterwards.

Along with CD evidence is as the important evidence data in hearing and court trial process, that CD sound intermediate frequency, video file should adopt main flow, general file layout.This form can in the support operating system of main flow and the broadcasting of audio and video playing software, for the standardization effort of whole judicial industry provides support.

And existing hearing main frame, court's trial main frame cannot support the reading of various operating system, more cannot support imprinting large files, also cannot accomplish automatically to calculate according to the capacity of different optical disc types and CD, by audio/video flow or video file conversion MP4 stream and burned in CD, great inconvenience is caused to imprinting, that main flow can not be formed, general file layout audio frequency, video.

Summary of the invention

The present invention, in order to solve above-mentioned problems of the prior art, provides a kind of method of CD burning MP4 file under embedded host.

The technical solution used in the present invention is:

A method for CD burning MP4 file under embedded host, steps of the method are:

I user passes through UI(UserInterface, user interface) open and imprint CDs in real time or optical disc backup function, disk format is first turned to UDF(UniversalDiscFormat by embedded host, Universal Disk Format) form;

The optical disc types that II embedded host is put into according to user again calculates the active volume of CD automatically, and audio frequency, video data are converted to MP4 data, then writes in CD, until CD burning is complete;

III after imprinting completes, and embedded host initiatively carries out validity check to CD.

The advantage that the present invention has and good effect are:

Disk format can be turned to UDF form by embedded host of the present invention, and this form can support the reading of various operating system, and can support that in CD, imprinting is more than the Single document of 2G.Embedded host can realize according to different optical disc types, as the DVD CD of DVD+R and DVD-R of 4.7GB or the BD-R Blu-ray Disc of 25GB, automatically calculate with the capacity according to CD, audio frequency, video data or video file changed MP4 data and writes in CD, and after CD burning, validity check being carried out to CD.Only deposit a MP4 file in the CD of imprinting, reach the versatility of file, integrality and continuity.

Accompanying drawing explanation

Fig. 1 is the FB(flow block) of step II of the present invention.

Embodiment

Be described in detail of the present invention referring to the drawings and specific embodiments.Specific embodiment described below is only preferred forms of the present invention, and can not be interpreted as limitation of the present invention.

The method of CD burning MP4 file under embedded host of the present invention, steps of the method are:

I user is opened by UI and imprints CDs in real time or optical disc backup function, and disk format is first turned to UDF form by embedded host;

The optical disc types that II embedded host is put into according to user again calculates the active volume of CD automatically, and audio frequency, video data are converted to MP4 data, then writes in CD, until CD burning is complete;

III after imprinting completes, and embedded host initiatively carries out validity check to CD.

In described step II, when user opens the function of imprinting CDs in real time by UI, its concrete steps are as follows:

I embedded host accepts the real time data of audio frequency, video, and is converted into MP4 data;

II embedded host calls the interface of imprinting MP4 data, and is write CD;

III judges whether pass dish is carved full, if pass dish is carved full, then notifies that user's imprinting terminates; If pass dish is not carved full, then return step I.

In described step II, when user opens the function of optical disc backup by UI, its concrete steps are as follows:

I embedded host reads audio frequency, the video data of video file, and is converted into MP4 data;

II embedded host calls the interface of imprinting MP4 data, and is write CD;

III judges whether pass dish is carved full, if pass dish is carved full, then notifies that user's imprinting terminates; If pass dish is not carved full, then return step I.

Disk format can be turned to UDF form by embedded host of the present invention, and this form can support the reading of various operating system, and can support that in CD, imprinting is more than the Single document of 2G.Embedded host can realize according to different optical disc types, as the DVD CD of DVD+R and DVD-R of 4.7GB or the BD-R Blu-ray Disc of 25GB, automatically calculate with the capacity according to CD, audio frequency, video data or video file changed MP4 data and writes in CD, and after CD burning, validity check being carried out to CD.Only deposit a MP4 file in the CD of imprinting, reach the versatility of file, integrality and continuity.

Claims (3)

1. the method for CD burning MP4 file under embedded host, steps of the method are:

I user is opened by UI and imprints CDs in real time or optical disc backup function, and disk format is first turned to UDF form by embedded host;

The optical disc types that II embedded host is put into according to user again calculates the active volume of CD automatically, and audio frequency, video data are converted to MP4 data, then writes in CD, until CD burning is complete;

III after imprinting completes, and embedded host initiatively carries out validity check to CD.

2. the method for CD burning MP4 file under embedded host according to claim 1, is characterized in that: in described step II, and when user opens the function of imprinting CDs in real time by UI, its concrete steps are as follows:

I embedded host accepts the real time data of audio frequency, video, and is converted into MP4 data;

II embedded host calls the interface of imprinting MP4 data, and is write CD;

III judges whether pass dish is carved full, if pass dish is carved full, then notifies that user's imprinting terminates; If pass dish is not carved full, then return step I.

3. the method for CD burning MP4 file under embedded host according to claim 1, is characterized in that: in described step II, and when user opens the function of optical disc backup by UI, its concrete steps are as follows:

I embedded host reads audio frequency, the video data of video file, and is converted into MP4 data;

II embedded host calls the interface of imprinting MP4 data, and is write CD;

III judges whether pass dish is carved full, if pass dish is carved full, then notifies that user's imprinting terminates; If pass dish is not carved full, then return step I.