CN110519639A - Network video is converted to the method and device of non-network video - Google Patents
Network video is converted to the method and device of non-network video Download PDFInfo
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- CN110519639A CN110519639A CN201910735792.XA CN201910735792A CN110519639A CN 110519639 A CN110519639 A CN 110519639A CN 201910735792 A CN201910735792 A CN 201910735792A CN 110519639 A CN110519639 A CN 110519639A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0127—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a kind of method that network video is converted to non-network video, include the following steps: to unzip it network video stream to be converted；H.265 decoding is carried out to the network video stream after decompression and obtains the first source video data；Frame per second is carried out to the first source video data and is converted to the second source video data；Second source video data are subjected to HDMI coding, output meets the non-network video flowing of HDMI consensus standard, or the second source video data are subjected to VGA coding, output meets the non-network video flowing of VGA consensus standard, or the second source video data are subjected to digital-to-analogue conversion, output meets the non-network video flowing of AV consensus standard.The invention further relates to a kind of devices for realizing the above-mentioned method that network video is converted to non-network video.Implement the method and device of the invention that network video is converted to non-network video, progress Video Quality Metric can be facilitated and obtain optimal non-network video quality by having the advantages that.
Description
Technical field
The present invention relates to video technique field, in particular to it is a kind of by network video be converted to non-network video method and
Device.
Background technique
With the development of multimedia technology, in order to adapt to the needs of storage video, people set different video files
Format is put video and audio in one file, to facilitate while play back.There are many video files to encapsulate lattice at present
Formula.At present also there are many audio/video player and the video-see website of many, and different players or video website
Limited compatibility supports the video file format played limited, therefore usually need to will be unable to before playing video directly
The video file of the format of broadcasting is converted into another video encapsulation format, to adapt to different network bandwidths, different terminals
Processing capacity and different user demands.Although having some video file format switching softwares in the prior art, not
Having proposition that can obtain the video format conversion method of best video effect, especially user can not obtain when carrying out Video Quality Metric
Know how to select coded format and encapsulation format and optimal encapsulation parameter, so as to cause the video effect sometimes converted
The problem of fruit is very poor or even can not play.And also there are not efficacious prescriptions for what network video was converted to non-network video at present
Method.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, providing a kind of can facilitate progress
Video Quality Metric and the method and device that network video is converted to non-network video for obtaining optimal non-network video quality.
The technical solution adopted by the present invention to solve the technical problems is: construct it is a kind of network video is converted to it is non-network
The method of video, includes the following steps:
A) network video stream to be converted is unziped it；
B H.265 decoding) is carried out to the network video stream after decompression and obtains the first source video data；
C frame per second) is carried out to the first source video data and is converted to the second source video data；
D the second source video data) are subjected to HDMI coding, output meets the non-network video of HDMI consensus standard
Stream, or the second source video data are subjected to VGA coding, output meets the non-network video flowing of VGA consensus standard, or
Second source video data are subjected to digital-to-analogue conversion, output meets the non-network video flowing of AV consensus standard.
It is described by network video to be converted in the method for the present invention that network video is converted to non-network video
Frequency stream is the video flowing for meeting ONVIF agreement.
In the method for the present invention that network video is converted to non-network video, in the step A) it also wraps before
It includes:
A0 H.265 decoded several groups parameter value) is preset.
It is described H.265 decoded several in the method for the present invention that network video is converted to non-network video
Group parameter value includes first group of parameter value, second group of parameter value and third group parameter value, second group of parameter value are as follows: rank is
First level, video code rate 1800Kbps, resolution ratio are 720 × 480, second group of parameter value are as follows: rank is the second level
Not, video code rate 3500Kbps, resolution ratio are 1280 × 720, the third group parameter value are as follows: rank is third level, depending on
Frequency code rate is 8500Kbps, and resolution ratio is 1920 × 1080.
In the method for the present invention that network video is converted to non-network video, the step B) further wrap
It includes:
B1) if preset H.265 decoded to request end offer according to the video stream format convert requests of request end
Dry group parameter value；
B2 it is H.265 decoded) to judge whether request end specifies in preset H.265 decoded several groups parameter value
One group of parameter value, if so, executing step B3)；Otherwise, step B4 is executed)；
B3) H.265 the second source video data are decoded according to one group of currently assigned parameter value of request end；
B4 current desired H.265 decoded rank) is determined；
B5) judge whether current desired H.265 decoded rank is first level, second level or third level, such as
It is to execute step B7)；Otherwise, step B6 is executed)；
B6) terminate；
B7) according to H.265 decoded first group of parameter value, the second parameter value or third parameter value to second source
H.265, video data is decoded, and H.265 decoding data is obtained.
The invention further relates to a kind of devices for realizing the above-mentioned method that network video is converted to non-network video, comprising:
Decompression decoding unit: for network video stream decompression to be converted and decoding to be obtained the first source video number
According to；
The frame rate conversion unit: the second source video data are converted to for carrying out frame per second to the first source video data；
H.265 decoding unit: H.265 decoding data is obtained for carrying out H.265 decoding to the second source video data；
Compression unit: it for passing through dsp chip compression processing to the H.265 decoding data, obtains output format and meets
The non-network video flowing of HDMI consensus standard, VGA consensus standard or AV consensus standard.
In device of the present invention, described by network video stream to be converted is the video flowing for meeting ONVIF agreement.
In device of the present invention, 8, device according to claim 7, which is characterized in that further include:
Pretreatment unit: for presetting H.265 decoded several groups parameter value.
In device of the present invention, the H.265 decoded several groups parameter value includes first group of parameter value, second
Group parameter value and third group parameter value, second group of parameter value are as follows: rank is first level, video code rate 1800Kbps,
Resolution ratio is 720 × 480, second group of parameter value are as follows: rank is second level, video code rate 3500Kbps, resolution ratio
It is 1280 × 720, the third group parameter value are as follows: rank is third level, video code rate 8500Kbps, resolution ratio 1920
×1080。
In device of the present invention, the H.265 decoding unit further comprises:
Decompression unit: for unziping it network video stream to be converted；
H.265 decoding unit: the first source video number is obtained for carrying out H.265 decoding to the network video stream after decompression
According to；
The frame rate conversion unit: the second source video data are converted to for carrying out frame per second to the first source video data；
Non-network video flowing acquiring unit: for the second source video data to be carried out HDMI coding, output meets
The non-network video flowing of HDMI consensus standard, or the second source video data are subjected to VGA coding, output meets VGA association
The non-network video flowing for standard of assessing a bid for tender, or the second source video data are subjected to digital-to-analogue conversion, output meets AV consensus standard
Non-network video flowing.
Implement the method and device of the invention that network video is converted to non-network video, has the advantages that
Since network video stream decompression to be converted and H.265 decoding obtain the first source video data；To the first source video data into
Row frame per second is converted to the second source video data；H.265 decoding is carried out to the second source video data and obtains H.265 decoding data；
Second source video data are subjected to HDMI coding, output meets the non-network video flowing of HDMI consensus standard, or by the second source
Video data carries out VGA coding, and output meets the non-network video flowing of VGA consensus standard, or by the second source video data into
Row digital-to-analogue conversion, output meet the non-network video flowing of AV consensus standard；The present invention, which can facilitate, to be carried out Video Quality Metric and obtains most
Excellent non-network video quality.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the stream that network video is converted to method in method and device one embodiment of non-network video by the present invention
Cheng Tu；
Fig. 2 is to carry out H.265 decoding to the network video stream after decompression in the embodiment to obtain the first source video number
According to specific flow chart；
Fig. 3 is the structural schematic diagram of device in the embodiment.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the method and device embodiment that network video is converted to non-network video by the present invention, network video is turned
The flow chart for being changed to the method for non-network video is as shown in Figure 1.In Fig. 1, network video is converted to the side of non-network video by this
Method includes the following steps:
Step S01 unzips it network video stream to be converted: in this step, network video to be converted being flowed into
Row decompression.The network video stream to be converted is the video flowing for meeting ONVIF agreement.
Step S02 carries out H.265 decoding to the network video stream after decompression and obtains the first source video data: this step
In, H.265 decoding is carried out to the network video stream after decompression and obtains the first source video data.
Step S03 carries out frame per second to the first source video data and is converted to the second source video data: in this step, to above-mentioned
First source video data obtained in step S02 carry out frame per second conversion, obtain the second source video data, that is, the first source is regarded
Frequency after being transformed into another frame per second, will obtain the second source video data according to another frame per second is transformed into from a kind of frame per second.
Second source video data are carried out HDMI coding by step S04, and output meets the non-network video of HDMI consensus standard
Stream, or the second source video data are carried out VGA coding, output meet the non-network video flowing of VGA consensus standard, or by the
Two source video data carry out digital-to-analogue conversion, obtain the non-network video flowing for meeting AV consensus standard: in this step, the second source being regarded
For frequency according to carrying out HDMI coding, output meets the non-network video flowing of HDMI consensus standard, or by the second source video data into
Row VGA coding, output meets the non-network video flowing of VGA consensus standard, or the second source video data are carried out digital-to-analogue conversion,
Obtain the non-network video flowing for meeting AV consensus standard.
Method of the invention carries out frame per second conversion after decoding by network video stream decompression to be converted and H.265 again, so
It is encoded afterwards using HDMI, output meets the non-network video flowing of HDMI consensus standard, or is encoded using VGA, and output meets VGA
The non-network video flowing of consensus standard, or digital-to-analogue conversion is carried out, output meets the non-network video flowing of AV consensus standard.This hair
H.265, bright method will decode and bind together implementation with dsp chip decompression method, without user to decoding and decapsulation side
The matching of method is selected.Method of the invention, which can facilitate, to be carried out Video Quality Metric and obtains optimal non-network video quality.
Further include pre-treatment step before above-mentioned steps S01, the pre-treatment step is as follows in the present embodiment:
Step S00 presets H.265 decoded several groups parameter value: in this step, if presetting H.265 decoded
Dry group parameter value.Specifically, H.265 decoded several groups parameter value includes first group of parameter value, second group of parameter value and the
Three groups of parameter values, second group of parameter value are as follows: rank is first level, and video code rate 1800Kbps, resolution ratio is 720 × 480,
Second group of parameter value are as follows: rank is second level, and video code rate 3500Kbps, resolution ratio is 1280 × 720, third group parameter
Value are as follows: rank is third level, and video code rate 8500Kbps, resolution ratio is 1920 × 1080.It is H.265 solved by being stored in advance
The several groups parameter value of code allows users to the parameter configuration for selecting to pre-set when H.265 being decoded, and solves existing
There is user in technology not know how configuration parameter problem, the video effect after further improving decapsulation.
For the present embodiment, above-mentioned steps S02 can also be refined further, and the flow chart after refinement is as shown in Figure 2.
In Fig. 2, above-mentioned steps S02 further comprises:
H.265, step S21 is decoded according to the video stream format convert requests of request end to request end offer is preset
Several groups parameter value: in this step, according to the video stream format convert requests of request end to request end provide it is preset
H.265 decoded several groups parameter value.
Step S22 judges whether request end specifies in preset H.265 decoded several groups parameter value and H.265 solves
One group of parameter value of code: in this step, judge whether request end refers in preset H.265 decoded several groups parameter value
Fixed H.265 decoded one group of parameter value, if it is determined that result be it is yes, then follow the steps S23；Otherwise, step S24 is executed.
H.265, step S23 decodes the second source video data according to one group of currently assigned parameter value of request end: this
In step, according to request end, H.265 one group of currently assigned parameter value decodes the second source video data.
Step S24 determines current desired H.265 decoded rank: in this step, determining current desired H.265 decoding
Rank.
Step S25 judges whether current desired H.265 decoded rank is first level, second level or the third level
It is other: in this step, to judge whether current desired H.265 decoded rank is first level, second level or third level, such as
The result that fruit judges be it is yes, then follow the steps S27；Otherwise, step S26 is executed.
Step S26 terminates: in this step, terminating.
Step S27 is according to H.265 decoded first group of parameter value, the second parameter value or third parameter value to the second source video
H.265, data are decoded, and H.265 decoding data is obtained: in this step, according to H.265 decoded first group of parameter value, second
H.265, parameter value or third parameter value decode the second source video data, obtain H.265 decoding data.Specifically, if
When above-mentioned steps S25 judges that current desired H.265 decoded rank is first level, then H.265 this step basis decodes
First group of parameter value H.265 the second source video data are decoded, if above-mentioned steps S25 judge it is current desired
H.265 when decoded rank is second level, then this step is according to H.265 decoded second group of parameter value to the second source video number
According to H.265 being decoded, if above-mentioned steps S25 judges that current desired H.265 decoded rank is third level, originally
H.265, step decodes the second source video data according to H.265 decoded third group parameter value.When current request end does not have
When selecting preset preferred parameter value H.265, optimal parameter can be selected according to current rank H.265 automatically
H.265, value is decoded, and the normal execution of video stream format flow path switch is further ensured.
The present embodiment further relates to a kind of device for realizing the above-mentioned method that network video is converted to non-network video, the dress
The structural schematic diagram set is as shown in Figure 3.In Fig. 3, which includes decompression unit 1, H.265 decoding unit 2, frame per second conversion are single
Member 3 and non-network video flowing acquiring unit 4；Wherein, decompression unit 1 is for decompressing network video stream to be converted
Contracting；The network video stream to be converted is the video flowing for meeting ONVIF agreement.
H.265 decoding unit 2 is used to carry out the network video stream after decompression H.265 decoding to obtain the first source video number
According to；The frame rate conversion unit 3 is used to carry out frame per second to the first source video data to be converted to the second source video data；Non-network video
It flows acquiring unit 4 to be used to carrying out the second source video data into HDMI coding, output meets the non-network video of HDMI consensus standard
Stream, or the second source video data are carried out VGA coding, output meet the non-network video flowing of VGA consensus standard, or by the
Two source video data carry out digital-to-analogue conversion, and output meets the non-network video flowing of AV consensus standard.
The device of the invention carries out frame per second conversion after decoding by network video stream decompression to be converted and H.265 again, so
It is encoded afterwards using HDMI, output meets the non-network video flowing of HDMI consensus standard, or is encoded using VGA, and output meets VGA
The non-network video flowing of consensus standard, or digital-to-analogue conversion is carried out, output meets the non-network video flowing of AV consensus standard.This hair
H.265, bright method will decode and bind together implementation with dsp chip decompression method, without user to decoding and decapsulation side
The matching of method is selected.Method of the invention, which can facilitate, to be carried out Video Quality Metric and obtains optimal non-network video quality.
In the present embodiment, which further includes pretreatment unit 01, and H.265 pretreatment unit 01 decodes for presetting
Several groups parameter value.H.265 decoded several groups parameter value includes first group of parameter value, second group of parameter value and third group for this
Parameter value, second group of parameter value are as follows: rank is first level, and video code rate 1800Kbps, resolution ratio is 720 × 480, second
Group parameter value are as follows: rank is second level, and video code rate 3500Kbps, resolution ratio is 1280 × 720, third group parameter value
Are as follows: rank is third level, and video code rate 8500Kbps, resolution ratio is 1920 × 1080.
In the present embodiment, H.265 decoding unit 2 further comprises that parameter value provides module 21, parameter value specified judgement for this
Module 22, the first coding module 23, rank determine mould 24, rank judgment module 25, end unit 26 and the second coding module 27；
It is preset H.265 to request end offer for the video stream format convert requests according to request end that parameter value provides module 21
Decoded several groups parameter value；Parameter value specifies judgment module 22 for judging H.265 whether request end solve preset
H.265 decoded one group of parameter value is specified in the several groups parameter value of code；First coding module 23 is used for current according to request end
H.265, one group of specified parameter value decodes the second source video data；Rank determines that mould 24 is current desired for determining
H.265 decoded rank；Rank judgment module 25 is for judging whether current desired H.265 decoded rank is the first order
Not, second level or third level；End unit 26 is for terminating；Second coding module 27 is used for according to H.265 decoded the
H.265, one group of parameter value, the second parameter value or third parameter value decode the second source video data, are H.265 decoded
Data.
In short, then the present invention is encoded successively by decompression, H.265 decoding, frame per second conversion using HDMI, it is defeated
Meet the non-network video flowing of HDMI consensus standard out, or encoded using VGA, output meets the non-network of VGA consensus standard
Video flowing, or digital-to-analogue conversion is carried out, output meets the non-network video flowing of AV consensus standard.Present invention implementation is simple and reliable,
And optimal decapsulation video effect can be obtained.The present invention supports ONVIF agreement comprehensively, can support NVR recorded broadcast, for defeated
Enter the network interface of network video stream using 1000M full-duplex mode, the present invention supports dual code stream to export, and flow point resolution is supported to set
It sets, supports local network LAN, wide area network WAN transmission.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of method that network video is converted to non-network video, which comprises the steps of:
A) network video stream to be converted is unziped it；
B H.265 decoding) is carried out to the network video stream after decompression and obtains the first source video data；
C frame per second) is carried out to the first source video data and is converted to the second source video data；
D the second source video data) are subjected to HDMI coding, output meets the non-network video flowing of HDMI consensus standard, or
The second source video data are carried out VGA coding by person, and output meets the non-network video flowing of VGA consensus standard, or by institute
It states the second source video data and carries out digital-to-analogue conversion, obtain the non-network video flowing for meeting AV consensus standard.
2. the method according to claim 1 that network video is converted to non-network video, which is characterized in that it is described will be to
The network video stream of conversion is the video flowing for meeting ONVIF agreement.
3. the method according to claim 2 that network video is converted to non-network video, which is characterized in that in the step
Rapid A) before further include:
A0 H.265 decoded several groups parameter value) is preset.
4. the method according to claim 3 that network video is converted to non-network video, which is characterized in that described
H.265 decoded several groups parameter value include first group of parameter value, second group of parameter value and third group parameter value, described second group
Parameter value are as follows: rank is first level, and video code rate 1800Kbps, resolution ratio is 720 × 480, second group of parameter value
Are as follows: rank is second level, and video code rate 3500Kbps, resolution ratio is 1280 × 720, the third group parameter value are as follows: grade
Not Wei third level, video code rate 8500Kbps, resolution ratio be 1920 × 1080.
5. the method according to claim 3 or 4 that network video is converted to non-network video, which is characterized in that described
Step B) further comprise:
B1 preset H.265 decoded several groups) are provided to request end according to the video stream format convert requests of request end
Parameter value；
B2) judge whether request end specifies H.265 decoded one group in preset H.265 decoded several groups parameter value
Parameter value, if so, executing step B3)；Otherwise, step B4 is executed)；
B3) H.265 the second source video data are decoded according to one group of currently assigned parameter value of request end；
B4 current desired H.265 decoded rank) is determined；
B5) judge whether current desired H.265 decoded rank is first level, second level or third level, if so, holding
Row step B7)；Otherwise, step B6 is executed)；
B6) terminate；
B7) according to H.265 decoded first group of parameter value, the second parameter value or third parameter value to second source video
H.265, data are decoded, and H.265 decoding data is obtained.
6. a kind of realize the device that network video is converted to the method for non-network video as described in claim 1, feature
It is, comprising:
Decompression unit: for unziping it network video stream to be converted；
H.265 the first source video data decoding unit: are obtained for carrying out H.265 decoding to the network video stream after decompression；
The frame rate conversion unit: the second source video data are converted to for carrying out frame per second to the first source video data；
Non-network video flowing acquiring unit: for the second source video data to be carried out HDMI coding, output meets HDMI association
The non-network video flowing for standard of assessing a bid for tender, or the second source video data are subjected to VGA coding, output meets VGA consensus standard
Non-network video flowing, or the second source video data are subjected to digital-to-analogue conversion, output meets the non-net of AV consensus standard
Network video flowing.
7. device according to claim 6, which is characterized in that it is described by network video stream to be converted be meet ONVIF
The video flowing of agreement.
8. device according to claim 7, which is characterized in that further include:
Pretreatment unit: for presetting H.265 decoded several groups parameter value.
9. device according to claim 8, which is characterized in that the H.265 decoded several groups parameter value includes first
Group parameter value, second group of parameter value and third group parameter value, second group of parameter value are as follows: rank is first level, video codes
Rate is 1800Kbps, and resolution ratio is 720 × 480, second group of parameter value are as follows: rank is second level, and video code rate is
3500Kbps, resolution ratio are 1280 × 720, the third group parameter value are as follows: rank is third level, and video code rate is
8500Kbps, resolution ratio are 1920 × 1080.
10. according to device described in claim 8 or 9, which is characterized in that the H.265 decoding unit further comprises:
Parameter value provides module: preset to request end offer for the video stream format convert requests according to request end
H.265 decoded several groups parameter value；
Whether parameter value specifies judgment module: for judging request end in preset H.265 decoded several groups parameter value
In specify H.265 decoded one group of parameter value；
First coding module: for being carried out according to one group of currently assigned parameter value of request end to the second source video data
H.265 it decodes；
Rank determination module: for determining current desired H.265 decoded rank；
Rank judgment module: for judging whether current desired H.265 decoded rank is first level, second level or
Three ranks；
Ending module: for terminating；
Second coding module: for according to H.265 decoded first group of parameter value, the second parameter value or third parameter value pair
H.265, the second source video data are decoded, and H.265 decoding data is obtained.
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| US5999220A (en) * | 1997-04-07 | 1999-12-07 | Washino; Kinya | Multi-format audio/video production system with frame-rate conversion |
| CN103297822A (en) * | 2013-05-23 | 2013-09-11 | 深圳Tcl新技术有限公司 | Set-top box and digital signal processing method thereof for television programs |
| CN104780392A (en) * | 2015-04-07 | 2015-07-15 | 无锡天脉聚源传媒科技有限公司 | Transcoding method and device for video files |
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2019
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| US5999220A (en) * | 1997-04-07 | 1999-12-07 | Washino; Kinya | Multi-format audio/video production system with frame-rate conversion |
| CN103297822A (en) * | 2013-05-23 | 2013-09-11 | 深圳Tcl新技术有限公司 | Set-top box and digital signal processing method thereof for television programs |
| CN104780392A (en) * | 2015-04-07 | 2015-07-15 | 无锡天脉聚源传媒科技有限公司 | Transcoding method and device for video files |
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