CN218416509U - Ultra-high definition encoder supporting transcoding - Google Patents
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Abstract
The utility model relates to an ultra-high definition encoder supporting transcoding, which belongs to the technical field of broadcast digital television, and comprises a casing, wherein an IP-SDI conversion plate and a video and audio coding plate are arranged in the casing, and the video and audio coding plate is electrically connected with the IP-SDI conversion plate; the IP-SDI conversion board is used for converting an input SDI Over IP video and audio data stream into 4K SDI video and audio signals and outputting the signals, and the video and audio coding board is used for receiving the 4K SDI video and audio signals and coding the signals into 4K ultrahigh definition coding code stream and outputting the 4K ultrahigh definition coding code stream; the video and audio coding board is also used for receiving AVS2 coding code streams input from the outside and transcoding the AVS2 coding code streams into 4K ultrahigh-definition coding code streams to be output. The utility model discloses can satisfy TV station, broadcasting and TV cable network, IPTV, OTT front end all over the country and receive the demand of changeing the clear channel of AVS 2K superelevation, make things convenient for H.264 H.265K STB stock user to watch the 4K channel, improve user experience and feel.
Description
Technical Field
The utility model belongs to the technical field of the broadcast digital television technique and specifically relates to a support clear encoder of superelevation of transcoding is related to.
Background
In order to meet the coding requirement of high resolution and further improve the compression efficiency, the AVS working group sets up a new generation of video coding standard AVS2 for ultra-high definition applications. As a 4K ultra high definition video coding standard for h.265 international standard, the AVS2 standard has been widely used for ultra high definition channel broadcasting of television stations, in particular, for the start-up of CCTV-4K ultra high definition channels and CCTV-16 olympic ultra high definition channels, which has greatly promoted the development of the ultra high definition industry in China.
At present, when a front end of a television station, a radio and television cable network, an IPTV, an OTT and other computer rooms receive and process AVS 2K ultra-high definition television programs, transcoding is often required to be h.265 or h.264 international standard, so as to improve the compatibility of post-processing equipment.
In view of the above-mentioned related art, the inventors found that at least the following problems exist in the related art: most of ultra-high-definition encoders in the related art do not have the function of transcoding from AVS2 to H.265, so that a user at the stock of an H.264/H.265K set-top box is inconvenient to watch a 4K channel, and the user experience is influenced to a certain extent.
SUMMERY OF THE UTILITY MODEL
In order to improve the user experience and feel, the utility model provides a clear encoder of superelevation of support transcoding.
The utility model provides a pair of clear encoder of superelevation of supporting transcoding adopts following technical scheme:
an ultra-high definition encoder supporting transcoding comprises a shell, wherein an IP-SDI conversion plate and a video and audio coding plate are arranged in the shell, and the video and audio coding plate is electrically connected with the IP-SDI conversion plate; the IP-SDI conversion board is used for converting an input SDI Over IP video and audio data stream into 4K SDI video and audio signals and outputting the signals, and the video and audio coding board is used for receiving the 4K SDI video and audio signals and coding the signals into 4K ultrahigh definition coding code stream and outputting the 4K ultrahigh definition coding code stream; the video and audio coding board is also used for receiving AVS2 coding code streams input from the outside and transcoding the AVS2 coding code streams into 4K ultrahigh-definition coding code streams to be output.
By adopting the technical scheme, SDI Over IP video and audio data streams are input into an IP-SDI conversion plate in a shell to be converted into 4K SDI video and audio signals to be output, then the 4K SDI video and audio signals are encoded into 4K ultra-high definition encoded code streams to be output by utilizing a video and audio coding plate, and meanwhile, the video and audio coding plate can also receive AVS2 encoded code streams input from the outside and transcode the 4K ultra-high definition encoded code streams to be output; by adding the AVS2-H.265 transcoding function on the encoding board, the receiving and transferring requirements of national television stations, broadcasting and television cable networks, IPTV and OTT front ends on AVS 2K ultra-high definition channels can be met, 4K channels can be conveniently watched by H.264/H.265K set top box inventory users, and therefore user experience is improved.
Optionally, the IP-SDI conversion board adopts SMPTE ST2110 standard protocol.
By adopting the technical scheme and the SMPTE ST2110 standard protocol, the limitation of the transmission distance of the connecting cables is broken, the requirement of long-distance transmission of 4K ultra-high definition signals is met conveniently, the number of the connecting cables is less, the equipment system is simpler and more stable, and the user experience is improved.
Optionally, the IP-SDI conversion board includes:
the IP input unit is used for receiving the SDI Over IP video and audio data stream and carrying out cache processing;
the IP demultiplexing unit is connected with the IP input unit and is used for carrying out IP demultiplexing on the SDI Over IP video and audio data stream after the buffer processing and outputting an ST2110-20 IP video stream, an ST2110-30 IP audio stream and an ST2110-40 IP auxiliary data stream;
an IP decapsulating unit, connected to the IP demultiplexing unit, for decapsulating the ST2110-20 IP video stream, the ST2110-30 IP audio stream, and the ST2110-40 IP auxiliary data stream, respectively, and outputting a video stream, an audio stream, and an auxiliary data stream;
an SDI embedding processing unit connected to the IP decapsulating unit, configured to embed the audio stream and the auxiliary data stream into the video stream to obtain the 4K SDI video/audio signal;
the SDI output unit is connected with the SDI embedding processing unit and is used for outputting the 4K SDI audio and video signals;
and the conversion control unit is respectively connected with the IP input unit, the IP demultiplexing unit, the IP decapsulating unit, the SDI embedding processing unit and the SDI output unit and is used for controlling the IP-SDI conversion board.
By adopting the technical scheme, under the control of the conversion control unit, the SDI Over IP video and audio data stream based on the SMPTE ST2110 standard protocol is input into the IP input unit for buffering processing, the IP demultiplexing unit carries out IP demultiplexing on the SDI Over IP video and audio data stream after buffering processing and outputs ST2110-20 IP video stream, ST2110-30 IP audio stream and ST2110-40 IP auxiliary data stream to the IP decapsulating unit, the IP decapsulating unit respectively decapsulates the streams and outputs the video stream, the audio stream and the auxiliary data stream to the SDI embedding processing unit, and the SDI embedding processing unit is utilized to embed the audio stream and the auxiliary data stream into the video stream, so that 4K SDI video and audio signals can be obtained and output through the SDI output unit, and the conversion from the SDI Over IP video and audio data stream to the 4K SDI video and audio signals is realized.
Optionally, the ultra-high definition encoder further includes a front panel, the front panel is electrically connected to the video and audio encoding board, and the front panel is configured to provide display and key operation functions.
By adopting the technical scheme, the front panel is utilized to display the program information, the equipment parameters, the working state and the like, and a user can select the corresponding program information or configure the encoder through key operation, so that different requirements of the user can be met conveniently.
Optionally, the video/audio coding board includes:
the ASI/IP code stream input unit is used for receiving AVS2 coding code streams input from the outside;
the program analyzing unit is connected with the ASI/IP code stream input unit and the front panel and is used for analyzing the program information of the AVS2 coding code stream, sending the program information to the front panel for displaying and selecting a program to be decoded according to an operation command received by the front panel;
the AVS2 decoding unit is connected with the ASI/IP code stream input unit and used for carrying out video and audio decoding on the AVS2 coding code stream according to the program to be decoded selected by the front panel and outputting a 4K HDMI video and audio signal;
the HDMI-SDI conversion unit is connected to the AVS2 decoding unit and is used for converting the 4K HDMI video-audio signals into 4K SDI video-audio signals;
the SDI input processing unit is respectively connected with the SDI output unit and the HDMI-SDI conversion unit and is used for receiving the 4K SDI video and audio signals and extracting an original video stream, an original audio stream and an original auxiliary data stream;
the coding parameter configuration unit is connected with the front panel and used for sending the video and audio coding parameters to the front panel for displaying and configuring the video and audio coding parameters according to an operation command received by the front panel; wherein the video and audio coding parameters comprise video coding parameters and audio coding parameters;
the 4K ultra-high-definition coding unit is respectively connected with the coding parameter configuration unit and the SDI input processing unit and is used for receiving the original video stream, the original audio stream, the original auxiliary data stream and the configured video and audio coding parameters, carrying out video coding on the original video stream according to the video coding parameters, carrying out audio coding on the original audio stream according to the audio coding parameters and outputting a video coding code stream and an audio coding code stream;
the code stream multiplexing unit is connected with the 4K ultrahigh-definition coding unit and is used for multiplexing the video coding code stream and the audio coding code stream;
the code stream output parameter configuration unit is connected with the front panel and used for sending the code stream output parameters to the front panel for display, configuring the code stream output parameters according to an operation command received by the front panel and outputting the configured code stream output parameters;
the code stream output unit is connected with the code stream output parameter configuration unit and the code stream multiplexing unit and is used for receiving the multiplexed video coding code stream and audio coding code stream and outputting a 4K ultrahigh-definition coding code stream according to the configured code stream output parameters;
a main control CPU unit, respectively connected to the front panel, the conversion control unit, the ASI/IP code stream input unit, the program parsing unit, the AVS2 decoding unit, the HDMI-SDI conversion unit, the SDI input processing unit, the coding parameter configuration unit, the 4K ultra high definition coding unit, the code stream multiplexing unit, the code stream output parameter configuration unit, and the code stream output unit, and configured to control the ultra high definition encoder.
By adopting the technical scheme, under the control of the main control CPU unit, the ASI/IP code stream input unit receives an AVS2 coding code stream input from the outside, the program analysis unit analyzes the program information of the AVS2 coding code stream and sends the program information to the front panel for displaying, the AVS2 decoding unit performs video and audio decoding on the AVS2 coding code stream according to a program to be decoded selected by the front panel and outputs a 4K HDMI video and audio signal, and then the HDMI-SDI conversion unit is utilized to convert the 4K HDMI video and audio signal into a 4K SDI video and audio signal; the SDI input processing unit is used for receiving 4K SDI video and audio signals sent by the SDI output unit and the HDMI-SDI conversion unit, original video streams, audio streams and auxiliary data streams are extracted and sent to the 4K ultra-high definition coding unit, a coding parameter configuration unit is used for sending video and audio coding parameters to the front panel to be displayed, a user can configure the video and audio coding parameters according to requirements through the front panel, the 4K ultra-high definition coding unit carries out video coding on the original video streams according to the configured video coding parameters, carries out audio coding on the original audio streams according to the configured audio coding parameters, outputs video coding streams and audio coding streams to the code stream multiplexing unit to be multiplexed, the code stream output parameter configuration unit sends code stream output parameters to the front panel to be displayed, the user can configure the code stream output parameters according to requirements through the front panel, the code stream output unit receives the multiplexed video coding streams and audio coding streams and outputs the 4K ultra-high definition coding streams according to the configured code stream output parameters, and accordingly output of the coding streams can be finished.
Optionally, the IP input unit receives the SDI Over IP video/audio data stream through an SFP28 optical fiber interface.
By adopting the technical scheme, the single-channel 25Gb/s rate can be supported by utilizing the SFP28 optical fiber interface, multiple standards and specifications such as IEEE802.3, SFF-8472 and SFF-8402 are met, and the requirement of the continuous growth of the next generation data center network can be met.
Optionally, the AVS2 decoding unit and the main control CPU unit both use a haisi Hi3796MV200 chip.
By adopting the technical scheme, as a full 4K high-performance SOC chip, the Hi3796MV200 chip integrates a 4-core 64-bit high-performance Cortex A53 processor and a multi-core high-performance 2D/3D acceleration engine, has a high-performance CPU, and can meet various application requirements.
Optionally, the SDI input processing unit is further configured to connect to an external 12G-SDI interface and receive a 4K SDI audio/video signal.
By adopting the technical scheme, the input of 4K SDI Over IP data streams based on the SMPTE ST2110 standard can be supported, and professional-grade 12G-SDI 4K ultra-high definition signals can be supported by utilizing an externally connected 12G-SDI interface, so that the adaptability and flexibility are improved.
Optionally, the ASI/IP code stream input unit, the HDMI-SDI conversion unit, the SDI input processing unit, and the code stream output unit all employ Intel FPGA chips.
By adopting the technical scheme, the Intel FPGA chip is used as an integrated circuit chip capable of realizing specific functions, and has the advantages of convenience and flexibility in programming, high integration level, high processing speed, low power consumption and the like.
Optionally, the 4K ultra-high-definition coding unit adopts a suo xi MB86M30 coding chip.
By adopting the technical scheme, the Soxi MB86M30 coding chip can transcode the AVC/HEVC adaptive bit rate stream of up to 256 bundles in real time, can realize most video processing functions, can reduce the power consumption to one tenth of that of a traditional system using a standard server, and greatly reduces the system operation cost.
To sum up, the utility model discloses a following at least one kind of useful technological effect: the SDI Over IP video and audio data stream is input to an IP-SDI conversion plate in the shell to be converted into 4K SDI video and audio signals to be output, then the 4K SDI video and audio signals are encoded into 4K ultra-high definition encoded code stream to be output by using a video and audio coding plate, and meanwhile, the video and audio coding plate can also receive AVS2 encoded code stream input from the outside and transcode the encoded code stream into 4K ultra-high definition encoded code stream to be output; by adding the AVS2-H.265 transcoding function on the coding board, the receiving and forwarding requirements of national television stations, radio and television cable networks, IPTV and OTT front ends on AVS 2K ultra-high definition channels can be met, 4K channels can be conveniently watched by H.264/H.265K set top box inventory users, and therefore the user experience is improved.
Drawings
Fig. 1 is a block diagram of an ultra high definition encoder according to an embodiment of the present application.
Fig. 2 is a block diagram of an IP-SDI conversion board according to an embodiment of the present application.
FIG. 3 is a block diagram of the video and audio encoding board and the front panel according to one embodiment of the present application.
Description of reference numerals: 1. a housing; 2. an IP-SDI conversion board; 201. an IP input unit; 202. an IP demultiplexing unit; 203. an IP decapsulation unit; 204. an SDI embedding processing unit; 205. an SDI output unit; 206. a conversion control unit; 3. a video and audio encoding board; 301. an ASI/IP code stream input unit; 302. a program analyzing unit; 303. an AVS2 decoding unit; 304. an HDMI-SDI conversion unit; 305. an SDI input processing unit; 306. a coding parameter configuration unit; 307. a 4K ultra high definition coding unit; 308. a code stream multiplexing unit; 309. a code stream output parameter configuration unit; 310. a code stream output unit; 311. a main control CPU unit; 4. a front panel; 5. a power panel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying fig. 1-3 and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The embodiment of the utility model discloses clear encoder of superelevation of support transcoding.
Referring to fig. 1, an ultra high definition encoder supporting transcoding includes a casing 1, a front panel 4, a power board 5, an IP-SDI conversion board 2 and a video-audio coding board 3 are disposed in the casing 1, the video-audio coding board 3 is electrically connected to the IP-SDI conversion board 2 through a connector, and both the front panel 4 and the power board 5 are electrically connected to the video-audio coding board 3 through wires; the system comprises a front panel 4, a power panel 5, an IP-SDI conversion panel 2, a video and audio coding panel 3, a super high definition encoder and a super high definition encoder, wherein the front panel 4 is used for providing display and key operation functions, the power panel 5 is used for supplying power to the super high definition encoder, the IP-SDI conversion panel 2 is used for converting an input SDI Over IP video and audio data stream into 4K SDI video and audio signals to be output, and the video and audio coding panel 3 is used for receiving the 4K SDI video and audio signals and coding the 4K SDI video and audio signals into 4K super high definition coding code stream to be output; and the video and audio coding board 3 is also used for receiving an AVS2 coding code stream input from the outside and transcoding the coding code stream into a 4K ultra-high definition coding code stream for output.
In the above embodiment, an SDI Over IP video/audio data stream is input to the IP-SDI conversion board 2 in the casing 1 to be converted into a 4K SDI video/audio signal for output, and then the video/audio coding board 3 is used to code the 4K SDI video/audio signal into a 4K ultra high definition coding code stream for output, and meanwhile, the video/audio coding board 3 can also receive an externally input AVS2 coding code stream and transcode the code stream into the 4K ultra high definition coding code stream for output; by adding the AVS2-H.265 transcoding function on the coding board, the receiving and forwarding requirements of national television stations, radio and television cable networks, IPTV and OTT front ends on AVS 2K ultra-high definition channels can be met, 4K channels can be conveniently watched by H.264/H.265K set top box inventory users, and therefore the user experience is improved.
For 4K ultra-high definition EFP manufacturing, common SDI transmission needs to be transmitted through four 3G-SDI connecting lines or one 12G-SDI connecting line, and the transmission distance is mostly limited to tens of meters; therefore, the IP-SDI conversion board 2 in the embodiment adopts the SMPTE ST2110 standard protocol, thereby breaking the limitation of the transmission distance of the connecting cables, being convenient for meeting the long-distance transmission requirement of 4K ultra-high definition signals, having fewer connecting cables, simpler and more stable equipment system, being convenient for meeting the requirements of national television stations and EFP ultra-high definition video program production of a media-fusing platform, further improving the user experience,
as an embodiment of the enclosure 1, the enclosure 1 adopts a standard 19-inch wide and 1U high enclosure, and is suitable for installation and use of a 19-inch standard cabinet, where the height occupied by equipment installation in the 19-inch standard cabinet is represented by a special unit "U", and 1u =44.45mm.
As an implementation manner of the front panel 4, the front panel 4 includes a display module and a key operation module, the display module is configured to display a video encoding parameter and a code stream output parameter, and the key operation module is configured to respond to a key trigger signal to execute a corresponding operation instruction; in addition, the display module can also display input and output parameters, the working state of the equipment and the like, so that a user can know the state of the equipment in time and configure the parameters.
As an embodiment of the power board 5, the power board 5 converts an ac signal input from the city grid into a dc voltage, so as to supply power to the ultra high definition encoder.
Referring to fig. 2, as an embodiment of the IP-SDI conversion plate 2, the IP-SDI conversion plate 2 includes:
an IP input unit 201, configured to receive an SDI Over IP video/audio data stream and perform caching processing;
an IP demultiplexing unit 202, connected to the IP input unit 201, for performing IP demultiplexing on the buffered SDI Over IP video/audio data stream, and outputting an ST2110-20 IP video stream, an ST2110-30 IP audio stream, and an ST2110-40 IP auxiliary data stream;
the IP demultiplexing unit 202 demultiplexes the video and audio data stream based on the ST2110 protocol;
an IP decapsulating unit 203 connected to the IP demultiplexing unit 202, for decapsulating the ST2110-20 IP video stream, the ST2110-30 IP audio stream, and the ST2110-40 IP auxiliary data stream, respectively, and outputting the video stream, the audio stream, and the auxiliary data stream;
an SDI embedding processing unit 204, connected to the IP decapsulating unit 203, for embedding the audio stream and the auxiliary data stream into the video stream to obtain a 4K SDI video/audio signal;
the audio stream and the auxiliary data stream are both embedded into the video stream according to the SDI protocol specification;
an SDI output unit 205 connected to the SDI embedding processing unit 204 for outputting a 4K SDI video-audio signal;
the SDI output unit 205 adopts a 12G-SDI interface specification;
a conversion control unit 206, connected to the IP input unit 201, the IP demultiplexing unit 202, the IP decapsulating unit 203, the SDI embedding processing unit 204, and the SDI output unit 205, respectively, controls the IP-SDI conversion board 2.
In this embodiment, the IP input unit 201 receives the SDI Over IP video/audio data stream through the SFP28 optical fiber interface, and the SFP28 optical fiber interface can support a single channel at a rate of 25Gb/s, so as to meet the continuously updated network requirements.
In the above embodiment, the IP-SDI conversion board 2 is designed by using an Intel high-performance ARM and FPGA hardware architecture, under the control of the conversion control unit 206, an SDI Over IP video/audio data stream based on the SMPTE ST2110 standard protocol is input to the IP input unit 201 for buffering, the IP demultiplexing unit 202 performs IP demultiplexing on the buffered SDI Over IP video/audio data stream, and outputs an ST2110-20 IP video stream, an ST2110-30 IP audio stream, and an ST2110-40 IP auxiliary data stream to the IP decapsulating unit 203, the IP decapsulating unit 203 decapsulates the buffered SDI IP video/audio data stream, and outputs the video stream, the audio stream, and the auxiliary data stream to the SDI embedding processing unit 204, and the SDI embedding processing unit 204 embeds the audio stream and the auxiliary data stream into the video stream, so as to obtain a 4K SDI audio signal, which is output through the SDI output unit 205, thereby realizing the conversion from the SDI Over IP video/audio data stream to the 4K SDI audio/audio data stream.
Referring to fig. 3, as an embodiment of the video-audio encoding board 3, the video-audio encoding board 3 includes:
an ASI/IP code stream input unit 301 configured to receive an AVS2 encoded code stream input from the outside;
the ASI/IP code stream input unit 301 may receive the AVS2 encoded code stream through the ASI output interface and the TS Over IP output interface;
the program analyzing unit 302 is connected to the ASI/IP code stream input unit 301 and the front panel 4, and is configured to analyze program information of the AVS2 encoded code stream and send the analyzed program information to the front panel 4 for display, and select a program to be decoded according to an operation command received by the front panel 4;
an AVS2 decoding unit 303, connected to the ASI/IP code stream input unit 301, configured to perform video/audio decoding on the AVS2 encoded code stream according to the program to be decoded selected by the front panel 4, and output a 4K HDMI video/audio signal;
an HDMI-SDI conversion unit 304 connected to the AVS2 decoding unit 303, for converting the 4K HDMI video-audio signal into a 4K SDI video-audio signal;
an SDI input processing unit 305 connected to the SDI output unit 205 and the HDMI-SDI conversion unit 304, respectively, for receiving the 4K SDI video-audio signal and extracting an original video stream, an audio stream, and an auxiliary data stream;
the encoding parameter configuration unit 306 is connected to the front panel 4, and is configured to send the video and audio encoding parameters to the front panel 4 for display, and configure the video and audio encoding parameters according to the operation command received by the front panel 4; the video and audio coding parameters comprise video coding parameters and audio coding parameters;
the video coding parameters are configured according to the H.264/H.265 coding standard, and the audio coding parameters are configured according to the MPEG1_ L2 coding standard;
a 4K ultra high definition coding unit 307, respectively connected to the coding parameter configuration unit 306 and the SDI input processing unit 305, configured to receive the original video stream, the audio stream, the auxiliary data stream, and the configured video and audio coding parameters, perform video coding on the original video stream according to the video coding parameters, perform audio coding on the original audio stream according to the audio coding parameters, and output a video coding code stream and an audio coding stream;
the 4K ultra-high-definition coding unit 307 can adopt a Soxhlet MB86M30 coding chip, and the Soxhlet MB86M30 coding chip can transcode the AVC/HEVC adaptive bit rate stream of up to 256 bundles in real time, so that most video processing functions can be realized;
a code stream multiplexing unit 308 connected to the 4K ultra high definition coding unit 307, and configured to multiplex the video coding code stream and the audio coding code stream;
a code stream output parameter configuration unit 309 connected to the front panel 4, and configured to send the code stream output parameter to the front panel 4 for display, configure the code stream output parameter according to an operation command received by the front panel 4, and output the configured code stream output parameter;
a code stream output unit 310, connected to the code stream output parameter configuration unit 309 and the code stream multiplexing unit 308, and configured to receive the multiplexed video encoded code stream and audio encoded code stream, and output a 4K ultra high definition encoded code stream according to the configured code stream output parameters;
wherein, the code stream output unit 310 may adopt an ASI output interface and a TS Over IP output interface at the same time; the ASI output interface outputs according to output parameters such as code rate of a code stream and the like corresponding to the ASI output interface configured in the code stream output parameters, and the TS Over IP interface outputs according to output parameters such as code rate of the code stream, a broadcast address, a port number and the like corresponding to the TS Over IP output interface configured in the code stream output parameters;
the main control CPU unit 311 is connected to the front panel 4, the conversion control unit 206, the ASI/IP code stream input unit 301, the program parsing unit 302, the AVS2 decoding unit 303, the HDMI-SDI conversion unit 304, the SDI input processing unit 305, the encoding parameter configuration unit 306, the 4K ultra high definition encoding unit 307, the code stream multiplexing unit 308, the code stream output parameter configuration unit 309, and the code stream output unit 310, respectively, and is configured to control the ultra high definition encoder.
In this embodiment, the ASI/IP code stream input unit 301, the HDMI-SDI conversion unit 304, the SDI input processing unit 305, and the code stream output unit 310 all use Intel FPGA chips as integrated circuit chips capable of implementing specific functions, and the Intel FPGA chips have the advantages of convenient and flexible programming, high integration level, high processing speed, low power consumption, and the like.
Moreover, the AVS2 decoding unit 303 and the main control CPU unit 311 both use haisi Hi3796MV200 chips as full 4K high performance SOC chips, the Hi3796MV200 chips integrate a 4-core 64-bit high performance Cortex a53 processor and a multi-core high performance 2D/3D acceleration engine, and a high performance CPU can meet various application requirements.
In the above embodiment, under the control of the main control CPU unit 311, the ASI/IP code stream input unit 301 receives an AVS2 encoded code stream input from outside, the program parsing unit 302 parses program information of the AVS2 encoded code stream and sends the parsed program information to the front panel 4 for display, the AVS2 decoding unit 303 performs video/audio decoding on the AVS2 encoded code stream and outputs 4K HDMI video/audio signals, and then the HDMI-SDI conversion unit 304 converts the 4K HDMI video/audio signals into 4K SDI video/audio signals; the SDI input processing unit 305 receives 4K SDI video and audio signals sent by the SDI output unit 205 and the HDMI-SDI conversion unit 304, extracts original video streams, audio streams and auxiliary data streams, and sends the video and audio coding parameters to the 4K ultra-high definition coding unit 307, the coding parameter configuration unit 306 sends video and audio coding parameters to the front panel 4 for displaying, a user can configure the video and audio coding parameters according to needs through the front panel 4, the 4K ultra-high definition coding unit 307 performs video coding on the original video streams according to the configured video coding parameters, performs audio coding on the original audio streams according to the configured audio coding parameters, and outputs the video coding streams and the audio coding streams to the multiplexing unit 308 for multiplexing, the code stream output parameter configuration unit 309 sends code stream output parameters to the front panel 4 for displaying, the user can configure the output parameters according to needs through the front panel 4, the code stream output unit 310 receives the multiplexed video coding streams and audio coding streams and outputs the ultra-high definition coding streams according to the configured code stream output parameters, and accordingly output the encoded code streams can be completed.
As a further embodiment of the SDI input processing unit 305, the SDI input processing unit 305 is further configured to interface with an external 12G-SDI interface and receive an externally input 4K SDI audio-video signal; by utilizing an externally connected 12G-SDI interface, the input of a 4K SDI Over IP data stream based on the SMPTE ST2110 standard can be supported, and professional-grade 12G-SDI 4K ultra-high definition signals can also be supported, so that the adaptability and the flexibility are improved.
According to the ultra-high definition encoder, video and audio signal input supports 4K SDI Over IP video and audio data stream input based on SMPTE ST2110 standard, also supports professional-grade 12G-SDI 4K ultra-high definition signal input, and is encoded into H.264/H.265K ultra-high definition encoding code stream output; meanwhile, in consideration of equipment compatibility and improvement of equipment integration, the ultra-high definition encoder also supports transcoding the AVS2 encoded code stream input by an external ASI/TS Over IP interface into H.264/H.265K ultra-high definition encoded code stream for output.
Based on the SMPTE ST2110 standard frame, the equipment system is simplified, the transmission distance is not limited by a transmission cable any more, the production requirements of television stations and EFP ultra-high definition video programs of a media-convergence platform can be met, and simultaneously the receiving and transferring requirements of the front ends of national television stations, radio and television cable networks, IPTV, OTT and other machine rooms on AVS 2K ultra-high definition channels can be met, so that H.264/H.265 4K set top box inventory users can watch 4K channels conveniently; in addition, the IP-SDI conversion plate 2 and the video and audio coding plate 3 adopt a separated board card design, so that the after-sale maintenance and replacement design of the coding plate and the conversion plate 2 are facilitated.
The foregoing is a preferred embodiment of the present invention and is not intended to limit the scope of the invention in any manner, and any feature disclosed in this specification (including any abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Claims (10)
1. An ultra high definition encoder supporting transcoding, characterized by: the device comprises a shell (1), wherein an IP-SDI conversion plate (2) and a video and audio coding plate (3) are arranged in the shell (1), and the video and audio coding plate (3) is electrically connected with the IP-SDI conversion plate (2); the IP-SDI conversion board (2) is used for converting an input SDI Over IP video and audio data stream into 4K SDI video and audio signals and outputting the signals, and the video and audio coding board (3) is used for receiving the 4K SDI video and audio signals and coding the signals into 4K ultrahigh definition coding code stream and outputting the 4K SDI video and audio signals; the video and audio coding board (3) is also used for receiving AVS2 coding code streams input from the outside and transcoding the coding code streams into 4K ultra-high definition coding code streams to output.
2. The ultra high definition encoder supporting transcoding of claim 1, wherein: the IP-SDI conversion board (2) adopts SMPTE ST2110 standard protocol.
3. The ultra high definition encoder supporting transcoding of claim 2, wherein: the IP-SDI conversion plate (2) comprises:
the IP input unit (201) is used for receiving the SDI Over IP video and audio data stream and carrying out cache processing;
the IP demultiplexing unit (202) is connected to the IP input unit (201) and is used for carrying out IP demultiplexing on the SDI Over IP video and audio data stream after the buffer processing and outputting an ST2110-20 IP video stream, an ST2110-30 IP audio stream and an ST2110-40 IP auxiliary data stream;
an IP decapsulation unit (203) connected to the IP demultiplexing unit (202) and configured to decapsulate the ST2110-20 IP video stream, the ST2110-30 IP audio stream, and the ST2110-40 IP auxiliary data stream, and output a video stream, an audio stream, and an auxiliary data stream;
an SDI embedding processing unit (204) connected to the IP decapsulating unit (203) for embedding the audio stream and the auxiliary data stream into the video stream to obtain the 4K SDI video-audio signal;
an SDI output unit (205) connected to the SDI embedding processing unit (204) for outputting the 4K SDI audio-video signal;
and the conversion control unit (206) is respectively connected with the IP input unit (201), the IP demultiplexing unit (202), the IP decapsulation unit (203), the SDI embedded processing unit (204) and the SDI output unit (205) and is used for controlling the IP-SDI conversion board (2).
4. The ultra high definition encoder supporting transcoding of claim 3, wherein: the ultra-high definition encoder further comprises a front panel (4), the front panel (4) is electrically connected with the video and audio coding plate (3), and the front panel (4) is used for providing display and key operation functions.
5. Ultra high definition encoder supporting transcoding according to claim 4, wherein the video-audio encoder board (3) comprises:
an ASI/IP code stream input unit (301) for receiving an AVS2 encoding code stream inputted from the outside;
the program analyzing unit (302) is connected with the ASI/IP code stream input unit (301) and the front panel (4) and is used for analyzing the program information of the AVS2 coding code stream, sending the program information to the front panel (4) for displaying and selecting a program to be decoded according to an operation command received by the front panel (4);
the AVS2 decoding unit (303) is connected with the ASI/IP code stream input unit (301) and is used for carrying out video and audio decoding on the AVS2 coding code stream according to the program to be decoded selected by the front panel (4) and outputting a 4K HDMI video and audio signal;
an HDMI-SDI conversion unit (304) connected to the AVS2 decoding unit (303) for converting the 4K HDMI video/audio signal into a 4K SDI video/audio signal;
an SDI input processing unit (305) respectively connected to the SDI output unit (205) and the HDMI-SDI conversion unit (304) for receiving the 4K SDI video and audio signal and extracting an original video stream, an audio stream and an auxiliary data stream;
the coding parameter configuration unit (306) is connected to the front panel (4) and is used for sending the video and audio coding parameters to the front panel (4) for displaying and configuring the video and audio coding parameters according to an operation command received by the front panel (4); wherein the video and audio coding parameters comprise video coding parameters and audio coding parameters;
a 4K ultra high definition encoding unit (307) respectively connected to the encoding parameter configuration unit (306) and the SDI input processing unit (305), configured to receive the original video stream, the audio stream, the auxiliary data stream, and the configured video and audio encoding parameters, perform video encoding on the original video stream according to the video encoding parameters, perform audio encoding on the original audio stream according to the audio encoding parameters, and output a video encoding code stream and an audio encoding code stream;
a code stream multiplexing unit (308) connected to the 4K ultra high definition coding unit (307) and used for multiplexing the video coding code stream and the audio coding code stream;
the code stream output parameter configuration unit (309) is connected to the front panel (4) and is used for sending the code stream output parameters to the front panel (4) for displaying, configuring the code stream output parameters according to an operation command received by the front panel (4) and outputting the configured code stream output parameters;
the code stream output unit (310) is connected with the code stream output parameter configuration unit (309) and the code stream multiplexing unit (308) and is used for receiving the multiplexed video coding code stream and audio coding code stream and outputting a 4K ultrahigh-definition coding code stream according to the configured code stream output parameters;
a main control CPU unit (311) respectively connected to the front panel (4), the conversion control unit (206), the ASI/IP code stream input unit (301), the program parsing unit (302), the AVS2 decoding unit (303), the HDMI-SDI conversion unit (304), the SDI input processing unit (305), the encoding parameter configuration unit (306), the 4K ultra high definition encoding unit (307), the code stream multiplexing unit (308), the code stream output parameter configuration unit (309), and the code stream output unit (310), and configured to control the ultra high definition encoder.
6. The ultra high definition encoder capable of transcoding of claim 3, wherein: the IP input unit (201) receives the SDI Over IP video and audio data stream through an SFP28 optical fiber interface.
7. The ultra high definition encoder supporting transcoding of claim 5, wherein: the AVS2 decoding unit (303) and the main control CPU unit (311) both adopt Haisi Hi3796MV200 chips.
8. The ultra high definition encoder capable of transcoding of claim 5, wherein: the SDI input processing unit (305) is also used for being connected with an external 12G-SDI interface and receiving 4K SDI audio and video signals.
9. The ultra high definition encoder supporting transcoding of claim 5, wherein: the ASI/IP code stream input unit (301), the HDMI-SDI conversion unit (304), the SDI input processing unit (305) and the code stream output unit (310) all adopt Intel FPGA chips.
10. The ultra high definition encoder capable of transcoding of claim 5, wherein: the 4K ultra-high-definition coding unit (307) adopts a Soxhlet MB86M30 coding chip.
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