CN112333472A - Video transmission method, signal transmitter and signal receiver - Google Patents
Video transmission method, signal transmitter and signal receiver Download PDFInfo
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- CN112333472A CN112333472A CN202011162337.4A CN202011162337A CN112333472A CN 112333472 A CN112333472 A CN 112333472A CN 202011162337 A CN202011162337 A CN 202011162337A CN 112333472 A CN112333472 A CN 112333472A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims abstract description 73
- 238000012545 processing Methods 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- GJWAPAVRQYYSTK-UHFFFAOYSA-N [(dimethyl-$l^{3}-silanyl)amino]-dimethylsilicon Chemical compound C[Si](C)N[Si](C)C GJWAPAVRQYYSTK-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2365—Multiplexing of several video streams
- H04N21/23655—Statistical multiplexing, e.g. by controlling the encoder to alter its bitrate to optimize the bandwidth utilization
-
- 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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2385—Channel allocation; Bandwidth allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention relates to the field of signal processing, and discloses a video transmission method, a signal transmitter and a signal receiver, wherein the video transmission method is applied to the signal transmitter and comprises the following steps: acquiring a video to be transmitted, and performing color space conversion on the video to be transmitted to reduce the transmission bandwidth of the video to be transmitted; and transmitting the converted video to be transmitted. Compared with the prior art, the video transmission method, the signal transmitter and the signal receiver provided by the embodiment of the invention have the advantages of reducing the transmission delay of the video signal and improving the transmission distance of the video signal.
Description
Technical Field
The present invention relates to the field of signal processing, and in particular, to a video transmission method, a signal transmitter, and a signal receiver.
Background
With the rapid development of video transmission technology, people have been widely used to transmit network video data, and the video data is characterized in that: the data volume is large, the calculation speed requirement is high, and the calculation resource demand and the transmission quantity are large. In current video applications, for example: video-on-demand, video conferencing, etc. have increasingly high demands for reducing video distortion. Therefore, in the video transmission process, in the situation that bandwidth resources are limited, how to increase the video transmission speed and distance still faces a great challenge.
In the prior art, a video transmission method based on encoding, decoding and transmission of a TCP/IP protocol or a video transmission method based on encoding, decoding and transmission of a TMDS protocol is generally adopted. However, the inventor of the present invention finds that, when a video signal is transmitted by using a video transmission method based on encoding, decoding and transmission of a TCP/IP protocol in the prior art, the video transmission delay is large, and the delay is about 100 milliseconds to 120 milliseconds. When the video transmission method based on encoding, decoding and transmission of the TMDS protocol is adopted, the transmitted video resolution is low, only video signals with resolutions of 1920 × 1080 and 60HZ can be transmitted, video signals with resolutions of 3840 × 2160 and 30HZ cannot be transmitted, and the transmission distance is short, generally about 50 meters. Therefore, how to better transmit the video signal becomes an urgent problem to be solved.
Disclosure of Invention
An object of embodiments of the present invention is to provide a video transmission method, a signal transmitter, and a signal receiver, so that the transmission delay of a video signal is reduced and the transmission distance of the video signal is increased.
In order to solve the above technical problem, an embodiment of the present invention provides a video transmission method applied to a signal transmitter, including the following steps: acquiring a video to be transmitted, and performing color space conversion on the video to be transmitted to reduce the transmission bandwidth of the video to be transmitted; and transmitting the converted video to be transmitted.
An embodiment of the present invention also provides a signal transmitter, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a video transmission method as previously described.
The embodiment of the invention also provides a video transmission method, which is applied to a signal receiver and comprises the following steps: receiving a video to be played sent by a signal sender, and performing color space conversion on the video to be played according to a second conversion color space so as to improve the transmission bandwidth of the video to be played; and transmitting the converted video to be played to a video player for playing.
Embodiments of the present invention also provide a signal receiver, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a video transmission method as previously described.
Compared with the prior art, in the transmission process of the video signal, firstly, the color space conversion is carried out on the video signal to be transmitted at the signal transmitter to reduce the transmission bandwidth of the video to be transmitted, the video to be transmitted with the transmission bandwidth reduced is transmitted to the signal receiver, and the bandwidth of the video to be transmitted is reduced before transmission, so that the transmission rate can be effectively improved, the transmission delay is reduced, the video signal with higher bandwidth can be transmitted through the channel with lower bandwidth, and the transmission distance is also prolonged. The video to be transmitted after the transmission bandwidth is reduced is transmitted to the signal receiver, namely the video to be played, and the signal receiver performs secondary color space conversion on the video to be played to improve the transmission bandwidth of the video to be played and ensure the fidelity of the video signal in the video signal transmission process.
In addition, the performing color space conversion on the video to be transmitted to reduce the transmission bandwidth of the video to be transmitted specifically includes: and sequentially acquiring transmission video frames contained in the video to be transmitted, and performing color space conversion on the transmission video frames to reduce the resolution of the video frames.
In addition, the performing color space conversion on the video to be transmitted to reduce the transmission bandwidth of the video to be transmitted specifically includes: and performing color space conversion on the video to be transmitted according to the first conversion color space.
In addition, after the color space conversion is performed on the video to be transmitted according to the first conversion color space, the method further includes: and acquiring an original color space of the video to be transmitted, and sending the original color space to the signal receiver.
In addition, before performing color space conversion on the video to be played according to the second conversion color space, the method further includes: and receiving the original color space sent by the signal transmitter, and taking the original color space as the second conversion color space.
In addition, before performing color space conversion on the video to be played according to the second conversion color space, the method further includes: and when the original color space transmitted by the signal transmitter is not received, taking a pre-stored third conversion color space as the second conversion color space.
In addition, color space conversion is performed on the video to be played according to a second conversion color space to improve the transmission bandwidth of the video to be played, and the method specifically includes: and sequentially acquiring playing video frames contained in the video to be played, and performing color space conversion on the playing video frames according to the second conversion color space so as to improve the resolution of the video frames.
Drawings
Fig. 1 is a flowchart of a video transmission method according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a signal transmitter according to a second embodiment of the present invention;
fig. 3 is a flowchart of a video transmission method according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a signal receiver according to a first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
A first embodiment of the present invention relates to a video transmission method applied to a signal transmitter, and the specific flow is as shown in fig. 1, including the following steps:
step S101: and acquiring a video to be transmitted.
Specifically, in this embodiment, the signal transmitter is in communication connection with the video capture device or the previous-stage signal transmitter, and the video capture device or the previous-stage signal transmitter transmits the video to be transmitted to the signal transmitter.
Step S102: and performing color space conversion on the video to be transmitted so as to reduce the transmission bandwidth of the video to be transmitted.
Specifically, in this embodiment, after the signal transmitter acquires the video to be transmitted, color space conversion is performed on the video to be transmitted. For example, 1: when the video to be transmitted is 1920 × 108060HZ, the color space is RBG 4: 4: 4 hours, the transmission bandwidth is 148.5 MHz. In this embodiment, after color space conversion, a video to be transmitted is converted into 1920 × 108060HZ, where the color space is RBG 4: 2: 0 and the transmission bandwidth is 75 MHZ. For example, 2: when the video to be transmitted is 3840 × 216030 HZ, the color space is RBG 4: 4: 4, the transmission bandwidth is 297 MHZ. In this embodiment, after color space conversion, the video to be transmitted is converted into 3840 × 216030 HZ, and the color space is RBG 4: 2: 0 and the transmission bandwidth is 148.5 MHz.
Preferably, in this embodiment, transmission video frames included in the video to be transmitted are sequentially acquired, and color space conversion is performed on the transmission video frames to reduce the resolution of the video frames. And sequentially carrying out color space conversion on all transmission video frames of the video to be transmitted so as to reduce the resolution ratio of the video frames, thereby effectively reducing the transmission bandwidth of the video to be transmitted.
Further, in this embodiment, the video to be transmitted is color space-converted according to the first conversion color space. The first conversion color space may be a preset conversion color space or a randomly obtained conversion color space, and particularly, the first conversion color space may be flexibly set according to actual needs.
In addition, after the video to be transmitted is subjected to color space conversion according to the first conversion color space, the original color space of the video to be transmitted is also obtained, and the original color space is sent to the signal receiver. The original color space of the video to be transmitted is sent to the signal receiver, so that the signal receiver can restore the video to be transmitted after color conversion, and the fidelity of the video to be transmitted is improved.
Step S103: and transmitting the converted video to be transmitted.
Specifically, in this embodiment, after completing the color space conversion of the video to be transmitted, the signal transmitter transmits the converted video to be transmitted to the next-stage transmission device, which includes a video player or a signal receiver.
Compared with the prior art, in the video transmission method provided by the embodiment, in the transmission process of the video signal, firstly, the color space conversion is performed on the video signal to be transmitted at the signal transmitter to reduce the transmission bandwidth of the video to be transmitted, and the video to be transmitted after the transmission bandwidth is reduced is transmitted to the signal receiver. The video to be transmitted after the transmission bandwidth is reduced is transmitted to the signal receiver, namely the video to be played, and the signal receiver performs secondary color space conversion on the video to be played to improve the transmission bandwidth of the video to be played and ensure the fidelity of the video signal in the video signal transmission process.
A third embodiment of the present invention relates to a signal transmitter, as shown in fig. 2, including: at least one processor 201; and a memory 202 communicatively coupled to the at least one processor 201; the memory 202 stores instructions executable by the at least one processor 201, and the instructions are executable by the at least one processor 201 to enable the at least one processor 201 to perform the video transmission method as described above.
Where the memory 202 and the processor 201 are coupled in a bus, the bus may comprise any number of interconnected buses and bridges, the buses coupling one or more of the various circuits of the processor 201 and the memory 202 together. The bus may also connect various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 201 is transmitted over the network medium via a bus, which further receives the data and transmits the data to the processor 201.
The processor 201 is responsible for managing the bus and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the memory 202 may be used to store data used by the processor 201 in performing operations.
It should be understood that this embodiment is an example of the apparatus corresponding to the first embodiment, and may be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.
A third embodiment of the present invention relates to a video transmission method applied to a signal receiver, and the specific steps are as shown in fig. 3, including:
step 301: and receiving the video to be played sent by the signal transmitter.
Specifically, in this embodiment, the video to be played is the video to be transmitted after color space conversion is performed by the signal transmitter in the first embodiment.
Step S302: and performing color space conversion on the video to be played according to the second conversion color space so as to improve the transmission bandwidth of the video to be played.
Specifically, in this embodiment, after the signal receiver acquires the video to be played, the signal receiver performs color space conversion on the video to be played. For example, 1: when the video to be played is 1920 × 108060HZ, the color space is RBG 4: 2: 0, transmission bandwidth is 75 MHZ; the second converted color space is RBG 4: 4: 4, after color space conversion in this embodiment, converting the video to be transmitted into 1920 × 108060HZ, where the color space is RBG 4: 4: 4 hours, the transmission bandwidth is 148.5 MHz. For example, 2: when the video to be played is 3840 × 216030 HZ, the color space is RBG 4: 2: 0, transmission bandwidth of 148.5 MHz; the second converted color space is RBG 4: 4: 4, after color space conversion in this embodiment, the video to be transmitted is converted into 3840 × 216030 HZ, and the color space is RBG 4: 4: 4, the transmission bandwidth is 297 MHZ.
Further, in this embodiment, the original color space transmitted by the signal transmitter is received while the video to be played is received, and the original color space is used as the second conversion color space. And taking the original color space as a second conversion color space, thereby carrying out color space reduction on the video to be played and ensuring the fidelity of the video to be played.
It should be understood that, the original color space transmitted by the foregoing receiving signal transmitter is only a specific example in this embodiment, and is not limited thereto, and in other embodiments of the present invention, the signal transmitter and the signal receiver may also preset the same conversion color space, and when the signal receiver does not receive the original color space transmitted by the signal transmitter, a pre-stored third conversion color space is used as the second conversion color space.
Further, in this embodiment, the playing video frames included in the video to be played are sequentially obtained, and color space conversion is performed on the playing video frames according to the second conversion color space to improve the resolution of the video frames.
Step S303: and transmitting the converted video to be played to a video player for playing.
It should be noted that this embodiment is an example corresponding to the first embodiment, and may be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the steps contain the same logical relationship, which is within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
A fourth embodiment of the present invention relates to a signal receiver, as shown in fig. 4, including: at least one processor 401; and a memory 402 communicatively coupled to the at least one processor 401; the memory 402 stores instructions executable by the at least one processor 401, where the instructions are executable by the at least one processor 401 to enable the at least one processor 401 to perform the video transmission method as described above.
Where the memory 402 and the processor 401 are coupled by a bus, which may include any number of interconnected buses and bridges that couple one or more of the various circuits of the processor 401 and the memory 402 together. The bus may also connect various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 401 is transmitted over the network medium via a bus, which further receives the data and transmits the data to the processor 401.
The processor 401 is responsible for managing the bus and general processing and may provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And memory 402 may be used to store data used by processor 401 in performing operations.
It should be noted that this embodiment is an example corresponding to the third embodiment, and this embodiment can be implemented in cooperation with the third embodiment. The related technical details mentioned in the third embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the three embodiments.
Those skilled in the art can understand that all or part of the steps in the method according to the above embodiments may be implemented by a program to instruct related hardware, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. A video transmission method applied to a signal transmitter, comprising:
acquiring a video to be transmitted, and performing color space conversion on the video to be transmitted to reduce the transmission bandwidth of the video to be transmitted;
and transmitting the converted video to be transmitted.
2. The video transmission method according to claim 1, wherein the performing color-space conversion on the video to be transmitted to reduce the transmission bandwidth of the video to be transmitted specifically comprises:
and sequentially acquiring transmission video frames contained in the video to be transmitted, and performing color space conversion on the transmission video frames to reduce the resolution of the video frames.
3. The video transmission method according to claim 1, wherein the performing color-space conversion on the video to be transmitted to reduce the transmission bandwidth of the video to be transmitted specifically comprises:
and performing color space conversion on the video to be transmitted according to the first conversion color space.
4. The video transmission method according to claim 3, wherein after the color-space converting the video to be transmitted according to the first converted color space, the method further comprises:
and acquiring an original color space of the video to be transmitted, and sending the original color space to the signal receiver.
5. A signal transmitter, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the video transmission method of any of claims 1 to 4.
6. A video transmission method applied to a signal receiver, comprising:
receiving a video to be played sent by a signal sender, and performing color space conversion on the video to be played according to a second conversion color space so as to improve the transmission bandwidth of the video to be played;
and transmitting the converted video to be played to a video player for playing.
7. The video transmission method according to claim 6, wherein before performing color space conversion on the video to be played according to the second conversion color space, the method further comprises:
and receiving the original color space sent by the signal transmitter, and taking the original color space as the second conversion color space.
8. The video transmission method according to claim 7, wherein before performing color space conversion on the video to be played according to the second conversion color space, the method further comprises:
and when the original color space transmitted by the signal transmitter is not received, taking a pre-stored third conversion color space as the second conversion color space.
9. The video transmission method according to claim 6, wherein performing color space conversion on the video to be played according to a second conversion color space to improve a transmission bandwidth of the video to be played specifically comprises:
and sequentially acquiring playing video frames contained in the video to be played, and performing color space conversion on the playing video frames according to the second conversion color space so as to improve the resolution of the video frames.
10. A signal receiver, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the video transmission method of any of claims 5 to 9.
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| CN202011162337.4A CN112333472A (en) | 2020-10-27 | 2020-10-27 | Video transmission method, signal transmitter and signal receiver |
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| CN202011162337.4A CN112333472A (en) | 2020-10-27 | 2020-10-27 | Video transmission method, signal transmitter and signal receiver |
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| US20130010864A1 (en) * | 2011-07-05 | 2013-01-10 | Qualcomm Incorporated | Image data compression |
| US20150288911A1 (en) * | 2014-04-04 | 2015-10-08 | Adder Technology Limited | Video signal transmission |
| CN106973243A (en) * | 2017-05-17 | 2017-07-21 | 深圳朗田亩半导体科技有限公司 | A kind of chip, digital signal transmission system |
| US20190089764A1 (en) * | 2017-09-15 | 2019-03-21 | Sling Media Pvt Ltd | Systems and methods enhancing streaming video performance through color depth variance |
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2020
- 2020-10-27 CN CN202011162337.4A patent/CN112333472A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130010864A1 (en) * | 2011-07-05 | 2013-01-10 | Qualcomm Incorporated | Image data compression |
| US20150288911A1 (en) * | 2014-04-04 | 2015-10-08 | Adder Technology Limited | Video signal transmission |
| CN106973243A (en) * | 2017-05-17 | 2017-07-21 | 深圳朗田亩半导体科技有限公司 | A kind of chip, digital signal transmission system |
| US20190089764A1 (en) * | 2017-09-15 | 2019-03-21 | Sling Media Pvt Ltd | Systems and methods enhancing streaming video performance through color depth variance |
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