CN102685545A - System and method for evaluating video data stream - Google Patents
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Abstract
The invention relates to a system and a method for evaluating video data stream. A machine control method for evaluating the video data stream with multiple broadcasting information channels can comprise selecting at least two video frames specific to a specific information channel, extracting the selected video frames from the video data stream in a decoding mode, comparing at least one of decoded video frames with (one or more) other decoded video frames or the video frames stored originally and preparing evaluation on the video data stream based on the comparison.
Description
Technical field
Disclosed technology relates to the transmission of video data stream, and relates more particularly to monitor and estimate the video data stream that comprises a plurality of broadcast channels.
Background technology
The transmission of video and voice data stably changes away from conventional art.For example; Much the television broadcasting facilities preferably use the Internet Protocol (IP) of passing through the Ethernet connection to transmit now rather than pass through the more traditional transmission form such as serial digital interface (SDI) and Asynchronous Serial Interface (ASI) that coaxial cable connects, and transmit broadcast data.Video compression technology combines broadcast transmitted to implement to be reduced to via terrestrial broadcasting, cable TV or the required bandwidth of satellite television transmission of video usually.
The compressed video that carries through Ethernet/IP agreement is commonly referred to as " IP video " and comprises the transmission that the inner Ethernet of professional facility/IP transmits and arrives individual dwelling house.The IP video can carry hundreds and thousands of channels of video and audio frequency effectively with multiplexed form.These channels can be to SD channel and the parallel single-definition with different-format (SD) that sends of HD channel and the mixing of high definition (HD) content.Typical IP video flowing is carried on 10 Gigabits per seconds (Gbps) and connects (main line that for example arrive regional substation connects) perhaps on the 1 Gbps Ethernet physical link (for example, from regional substation to individual dwelling house).
The major issue that the video broadcasting industry faces be can not be efficiently and effectively monitoring typically by the transmission quality of hundreds and thousands of channels of the video of single broadcast provider broadcasting and audio frequency.Video broadcasting provider is often up to the transmission problem of just knowing the viewing experience that influences the client very late.Although the client generally is ready to handle accidental moment " disturb (glitch) ", much clients will not tolerate the frequent and/or lasting problem about video transmission, such as black video, freeze video or block video appears.
Such as black, freeze or video-transmission problems that block video appears aspect the client that baffles possibly become client (ex-customer) through switching to another video provider simply easily in the past.And even the client does not finish to switch to another provider, but the service call that the client initiates maybe be very expensive aspect customer support and technical support resource.Cause to send the field technician maybe be expensive especially for provider to the customer call in client residence.
Thereby it is the key issue in the emerging IP field of video monitoring that hundreds of multiplexing video and voice-grade channel are carried out the ability that base band measures.Current system does not typically have important base band verification to error message monitoring transport layer.For example, traditional product can at length be monitored transport layer, but they possibly carry out seldom (if any) monitoring to the base band video of decoding.These systems are special poor efficiencys for the IP video, because on the base band data of transport layer and decompression, possibly there be and often exist transmission problem.Although nearer product possibly attempt to carry out the measurement to the base band video of decoding, they can not be handled the monitoring more than the decompression base band data of several channels, say nothing of parallel hundreds of multipling channel.
Summary of the invention
The embodiment of disclosed technology can comprise the monitoring that some decoding base band of all fronts road speed of the closely real-time hundreds and thousands of channels and the particularly 1 Gbps ethernet link that are directed against Internet Protocol (IP) video are measured.The quick monitoring and the deep monitoring of hundreds and thousands of channels of the IP video that some execution mode can be supported to be carried by the High Speed IP video data stream obtain timely and valuable Quality of experience (QoE) measurement and about the ability of the warning of the video quality that is delivered to its client for broadcast video provider provides thus.
Description of drawings
Fig. 1 is the block diagram that the example of the basic stream with different types of frame of video is described.
Fig. 2 is the example of (repurpose) video is reused in explanation from first resolution to second small in resolution a block diagram.
Fig. 3 is the block diagram of explanation according to the example of the video data stream evaluation system of the embodiment of disclosed technology.
Fig. 4 is the block diagram of explanation according to the example of the frame of video preliminary treatment module of the embodiment of disclosed technology.
Fig. 5 is the block diagram of explanation according to the example of the video data stream evaluation system that is used for multiple channel type of the embodiment of disclosed technology.
Fig. 6 having quick scanning and going deep into the block diagram of example of the video data stream evaluation system of scan video evaluation module that be explanation according to the embodiment of disclosed technology.
Fig. 7 is the flow chart of explanation according to the example of the apparatus control method of the evaluation video data stream of the embodiment of disclosed technology.
Fig. 8 is the flow chart of explanation according to another example of the apparatus control method of the evaluation video data stream of the embodiment of disclosed technology.
Embodiment
Fig. 1 is the block diagram of explanation basic video data stream (ES stream) 100.In this example, ES stream 100 has four independent frames: two independent frame (I frame) 102a and 102d, predictive frame (P frame) 102b and bidirectional frame (B frame) 102c.Each is the full assigned picture that is similar to still image basically for I frame 102a and 102d.Each only holds the part of correspondence image information P frame 102b and B frame 102c, thereby need be than I frame 102a and 102d memory space still less.
The basic stream (PES) of packing typically comprises a plurality of PES bags, and each PES bag is formed by the video data in the ES (such as the ES 100 of Fig. 1).The PES bag resolves into transmission stream (TS) bag of fixed size usually.Transmit the TS bag that stream generally comprises a plurality of 188 bytes, these bags can be multiplexing together easily and be used typical broadcast transmission to transmit as the part of IP video flowing.
Fig. 2 explains that high definition (HD) video data 202 reduces 200 block diagram to the data of single-definition (SD) video data 204.For example, HD video data 202 can have the resolution of 1080i, and this resolution need be reused, and promptly is reduced to 640 * 480 the resolution that is used for SD video data 204.In some cases, SD video data 204 possibly be reduced to portable video data 206, makes it can for example be presented at such as on handheld computer or the mobile phones.Be that about the general considerations of reusing each data minus introductory note plays defective possible in video data and introduces.For example, image being reduced to second small in resolution from a resolution can be so that picture more softening and fuzzyyer on the device of the resolution display image that reduces.
Should monitor the mistake of every layer of given video data stream, because every layer has its oneself possible errors collection.And the problem in one deck (for example IP bag) often causes the mistake in other layers (for example corresponding TS bag).In fact, single ruined frame of video possibly cause the mistake of on a lot of frame of video, propagating.For example, if connector picks up wrong junction point, then it only need depart from single position and destroys data flow.Although some current systems have some built-in error correcting capability, they are very limited.For example, some current systems can support the limited evaluation of given transmission stream or the basic flow analysis of packing.
Trouble be, such as H.264 tend to need a lot of processing powers than new standard, make the evaluation of individual channel (let alone hundreds and thousands of channel) possibly make the processor paralysis effectively.In fact, power PC can be handled no more than several H.264 video flowing owing to complexity.Hardware decoder typically can be handled no more than four video flowings H.264, even and like this, only carry out through between them, switching in time.This is because promptly use very capable hardware, for the needed processing resource of all data of decoding also too many.
The base band of preferably closely carrying out decode key is in real time measured, such as black frame, freeze frame and block the detection." black frame " refers generally to for the video " card " that wherein shows in the situation of basic or complete black." freeze frame " refers generally to for the video " card " that wherein shows in the situation that repeats basically on the single frame of self." bulk " refers generally to that generation has at vpg connection is the existence of visual artifact at the edge of piece or rectangle.A those of ordinary skill of this area will be recognized that the display video of these behaviors appears and possibly comprise noise.For example, " deceiving " frame maybe reality have some noises above that, even and the observer we can say that the video of demonstration is stuck in black, the data actual capabilities are not uniformly perfect.
Fig. 3 is the block diagram of the example of explanation video data stream evaluation system 300.Video source 302 provides video data stream to video data stream evaluation system 300.Video data stream can comprise a lot of channels of broadcasting separately.In example; Video data stream evaluation system 300 comprises frame of video preliminary treatment module 304; This frame of video preliminary treatment module 304 can be carried out preliminary treatment from video source 302 receiving video datas stream and to video data stream, such as as followingly format frame of video discussing about example illustrated in fig. 4.In certain embodiments, as discussed in detail about example illustrated in fig. 5, frame of video preliminary treatment module 304 can be divided into groups to video data by video data type (for example HD data and SD data).
In case from the sets of video data of the appropriate formatization of one or more channels ready and alternatively with data compilation from other channels of identical modification; Before frame of video preliminary treatment module 304 can for example be placed on the decoder formation with video data; This decoder formation is sent video data to decoder resources (for example, the frame of video decoder module 306) subsequently.Frame of video decoder module 306 can be decoded and is delivered to frame of video evaluation module 308 from the frame of video of frame of video preliminary treatment module 304 receptions and with decoded video frames.
If the suitable decoded video frames of desired number do not occur from frame of video decoder module 306, then mistake can for example be sent to controll block to confirm what will be done as response.Although this situation possibly come from the video data need be by other processes factual error of detailed assessment more; But this situation also can the relevant problem of decoded device trigger, and for example frame of video decoder module 306 does not obtain enough Preset Times or data are set.In this case, frame of video decoder module 306 can cause (provoke) retry, and the specific user is perhaps warned in the transmission of the more video datas of request in next circulation.
After receiving decoded video frames from frame of video decoder module 306, frame of video evaluation module 308 can be carried out the specific evaluation of channel based on the decoded video frames that receives from frame of video decoder module 306.For example, frame of video evaluation module 308 can be confirmed whether video currently represents such as black, freeze or block some undesirable characteristic that appears.
In some embodiments, frame of video evaluation module 308 can be estimated decoded video frames, for example through measuring decoded video frames individually and using in a lot of frame of video comparison algorithms commonly used any relatively to come the comparison decoded video frames each other.Frame of video evaluation module 308 can be preserved the duplicate to the frame of video of at least one original circulation of each channel alternatively, possibly be used for following estimate (for example comparing).
For example, some execution mode is included in from causing the time interval between the frame of video of same channel advantageously to reduce the false positive rate of freeze frame.If frame of video almost is equal on some seconds gap, being likely then that frame of video is actual freezes rather than the basic similarly situation of consecutive frame except " noise ".This is because consecutive frame has height correlation usually.Therefore, effective detection of black or freeze frame generally requires 308 more at least two frames of frame of video evaluation module.And, because through only checking that I frame or IDR frame possibly miss Device Errors, so except the I frame, frame of video evaluation module 308 is generally also considered P frame and/or B frame.
In certain embodiments, frame of video evaluation module 308 can generate one or more reports 312, and these reports 312 can be sent on special time or in response to satisfying some condition continuously.For example, frame of video evaluation module 308 can be set to only when video represents some specified characteristic, send report 312.Report 312 can comprise warning or alerts triggered (not shown).For example, freezed if a certain channel is current, then frame of video evaluation module 308 can send report 312, and this report 312 comprises to the warning of the local technical support team that can begin immediately to deal with problems or as this warning.(one or more) report 312 can comprise various types of information, such as what channel be affected, channel is current represents what behavior and how long channel represents the behavior.
As the part to the evaluation of decoded video frames, frame of video evaluation module 308 can be from the original stored video frames of frame storage vault 310 retrievals such as inside and/or remote data base.For example, frame of video evaluation module 308 can compare any (such as the nearest original frame of video) in current video frame and a lot of original frame of video.Frame of video evaluation module 308 can also be stored the frame of video of current evaluation in frame storage vault 310, make them to be used for evaluation subsequently by frame of video evaluation module 308.
Some embodiment of disclosed technology can provide near cheaply real-time measurement to the hundreds of video channel in the IP video flowing.For example, consider to have the IP video flowing of 500 channels.Suppose that average three frame times of each channel are decoded, comprise that the execution mode of the hardware decoder of two 60 frame per seconds can be carried out the complete cycle that spreads all over all 500 channels in 12 seconds.
A those of ordinary skill of this area will recognize that video data stream evaluation system 300 can be implemented with a lot of different modes.For example, each assembly of video data stream evaluation system 300 may be embodied as nextport hardware component NextPort, component software or its combination.In relating to the execution mode of nextport hardware component NextPort, assembly can be separated from one another, is embodied as the part of single nextport hardware component NextPort, or its combination.
A those of ordinary skill of this area will recognize that except perhaps replacing the video data stream evaluation system, the execution mode of disclosed technology can comprise the audio data stream evaluation system.In certain embodiments, individual traffic evaluation system (such as the video data stream evaluation system 300 of Fig. 3) can be constructed as to each processing audio data and video data in a lot of corresponding broadcast channels.
Fig. 4 is the block diagram of detailed example of the frame of video preliminary treatment module 304 of key diagram 3.In example, frame of video preliminary treatment module 304 comprises the frame of video selection module of from the video data stream that video source 302 receives, selecting at least two frame of video of particular channel 402.Through running through input video stream and selecting only two frame of video that will finally send to decode resources to each channel, frame of video selects the use of module 402 can greatly reduce data.Compare with carrying out full decoder, find that in video flowing object video needs significantly less processing resource.
Frame of video selects module 402 can select two I frames to given channel.Alternatively, frame of video selects module 402 can select an I frame and P frame or B frame.In further embodiments, frame of video selects module 402 can in fact select any combination of I frame, P frame and B frame.In certain embodiments, frame of video selects module 402 in given video flowing, to select more than two frame of video.
In case selected frame of video, frame of video selects module 402 can send the sign of selected frame of video to frame of video extraction module 404, and frame of video extraction module 404 extracts selected frame of video from video data stream.A those of ordinary skill of this area will recognize that frame of video selects module 402 and frame of video extraction module 404 can implement perhaps even be embodied as single component together.In case frame of video extraction module 404 has extracted selected frame of video, then it sends the frame of video of extracting to frame of video formatting module 406.
Frame of video formatting module 406 can format the extraction frame of video that receives from frame of video extraction module 404.For example, in case discerned the position of selected frame, frame of video formatting module 406 can make data queue and place these data with correct form and use for frame of video decoder module 306.In certain embodiments, frame of video formatting module 406 can be created one or more generated data streams, and each generated data stream copies as appropriate format for 306 decodings of frame of video decoder module with the video data of correspondence basically.Frame of video formatting module 406 can consider such as decoded time stamp, presentative time and stab and the various mpeg format details of metadata, and it can be revised to guarantee that frame of video decoder module 306 will suitably work as required.
Fig. 5 is the block diagram that the example of the video data stream evaluation system 300 that is modified to the Fig. 3 that handles multiple channel type is described.In example, through the frame of video of batch processing together (batch) same type before sending the process decode procedure, frame of video preliminary treatment module 304 can reduce decoder reset and the time is set.In certain embodiments, frame of video preliminary treatment module 304 can be created resultant current to every kind of video type.Refer generally to the data flow that generation comprises the neotectonics of some video data (for example all video datas of a certain type) that duplicates from the actual video stream of correspondence like resultant current in this use.
For can be so that system can avoid resetting decoder by the desired form of Rcv decoder, and result avoids general with it loss of related processing time with relatively little extraction frame of video collection reformatting.Because only there is a spot of different video frame type usually, for example five types, so even in the situation that relates to the video pipeline with hundreds of channel, the ten minutes that the use of several composite channels also possibly cause decode resources is handling property efficiently.
For example comprise in the situation of mixing of SD video channel and HD video channel that frame of video preliminary treatment module 304 can become SD channel batch processing together first resultant current and send first resultant current to frame of video decoder module 306 in frame of video.Frame of video preliminary treatment module 304 can also become HD channel batch processing together second resultant current and send second resultant current to another frame of video decoder module 506, and 506 pairs of these streams of this another frame of video decoder module are decoded and then decoded frame are delivered to another frame of video evaluation module 508 that can generate alternatively about the report 510 of HD data.
Exist therein in the situation of modification of HD channel, frame of video preliminary treatment module 304 is each modification of batch processing together.For example; The frame of video preliminary treatment module 304 of Fig. 5 is a kind of modification of batch processing and it is sent to another frame of video decoder module 512 as single stream together, this another frame of video decoder module 512 decoded video frames and they are sent to the 3rd frame of video evaluation module 514 that can generate alternatively about the report 516 of modification.
The frame of video decoder module 306,506 that three components that the video data stream evaluation system 300 of Fig. 5 illustrate respectively leave and 512 and frame of video evaluation module 508 and 514.Yet a technical staff of this area will recognize that alternative can comprise that single frame of video decoder module and/or single frame of video evaluation module flow to handle many groups, rather than the decode resources and the evaluation component of separating.
Fig. 6 is the block diagram that explanation has the quick scan video evaluation module 602 and the example of the video data stream evaluation system 300 of the Fig. 3 that gos deep into scan video evaluation module 604.In this example, fast scan video evaluation module 602 can to such as black, freeze or block video appears that some wrongly carries out scanning fast.As refer to the continuous sweep of a lot of different channels in the quick scanning of this use, wherein the frame to the minimum number of channel, for example two frames were selected, extract and estimated to scan video evaluation module 602 before advancing to next channel to be assessed fast.
Scan video evaluation module 602 can be carried out the quick scanning of finite depth and the data volume limited to each channel check on all channels fast.Quick scan video evaluation module 602 thereby can in (typically in real time near) circulation fast, carry out limited base band to particular channel and measure collection, report advances to next channel then about the result of this channel.If scan video evaluation module 602 detects potential triggering fast; For example possible black or freeze video, then video data stream evaluation system 300 can call and go deep into scan video evaluation module 604 and check that more longways (take a longer look at) channel is to confirm whether to exist really suspicious condition.
As in the deep scanning of this use or deeply probe into and refer generally to long, the more detailed video analysis of generation to a certain channel.Going deep into scanning can obtain quick scanning suspection effectively and convert them to high confidence level result.For example, as if if based on the quick scanning of quick scan video evaluation module 602, particular channel represents and freezes to appear, and then gos deep into scan video evaluation module 604 and can at length monitor some seconds of this channel to obtain the high confidence level that channel freezes really.Another situation that possibly trigger deep scanning is the situation to picture group (GOP) structural change of particular channel.Whether in this situation, going deep into scan video evaluation module 604 can exist because GOP changes the base band video problem that causes to check by this channel of extra care.
In certain embodiments, channel list to be assessed can drive and go deep into scan video evaluation module 604.This tabulation can indicating channel order of priority.For example, tabulation can be served as reasons, and quick scanning process is discerned or ask the in-depth analysis of the channel of identification (for example, from outside automated video management system) to give higher priority by the user.Tabulation can be guided and goed deep into the 604 pairs of particular channels of scan video evaluation module and carry out deeply scanning or scan carrying out more frequently such as the priority channel of pay-per-view (pay-per-view) channel deeply.Go deep into scan video evaluation module 604 and can also be set to work as inertia, for example not active process trigger by tabulation deep scanning the time continuously circulation through deep scanning to all channels.
In certain embodiments, the control of intelligent alarm processing and engine can be used to be provided with the tabulation that will monitor which channel.Intelligence alarm processing and engine control can also be stipulated a lot of video properties that system should specifically know and follow the tracks of.In certain embodiments, the control of intelligent alarm processing and engine can the receiving and analyzing result, the for example report 310 of Fig. 3, and confirm how to handle this information.Based on this information, intelligent alarm processing and engine control for example can determine whether to create and send alarm to specific user and/or NMS.
Fig. 7 is the flow chart that the example of the apparatus control method 700 of estimating video data stream is described.702, select two or more frame of video to the particular channel in the inputting video data stream.In certain embodiments, system can be in the startup that begins of I frame or IDR frame.In case selected two or more frames for this channel, they can extract from video data stream then, as shown in 704.In certain embodiments, extraction refers to the video data corresponding to selected frame of video is copied in the resultant current of new establishment.
706, the frame of video of extraction was formatd before being sent to decode resources.As shown in 708, formative frame of video is decoded then.Decode resources has been decoded among some embodiment of some frame of video therein, and decode procedure can be through resetting decoder and make it prepare to receive next group data to start.In case be ready to decoder, video data can pass through decoder and send and export and can be gathered.Before being sent to the evaluation resource, resulting frame can be labeled then and have for example channel information, time sequence information and other metadata such as the decoder sign.
710, estimate the formative frame of video that receives from decoder.Whether for example, frame of video can contrast each other and/or contrast original stored video frames and measure, represent such as black video, freeze some undesirable characteristic that video or block video appear for example to confirm the frame of video of being estimated.As shown in 712, evaluation result can be generated and is sent to one or more recipients alternatively to carry out potential action based on this result.For example, broadcast video provider can the proposed techniques support staff solve the black that detects to particular channel positively or freeze video before the phone that receives from angry client.
Fig. 8 is the flow chart of another example of estimating the apparatus control method 800 of video data stream.802, from video data stream, select two or more frame of video to particular channel.804, selected frame of video is extracted, formats and send to decode resources, and this decode resources decoded video frames is as shown in 806.
808, can make about confirming of any mistake during 806 decoding, whether occurring.If the mistake of detecting then as shown in 810, can be handled in call error.For example, error message can be sent to the recipient of regulation.If do not detect mistake, if but perhaps a certain mistake is detected and is considered to then estimate frame of video then to harmless when pre-treatment or irrelevant with it, as shown in 812.For example, system can confirm whether the current video of sending to channel is black, freeze or bulk.Evaluation at 812 places can comprise the quick scanning of channel.
814, can make about whether carrying out confirming of deeply scanning to the channel of estimating.For example, appear if the quick scanning of channel causes detecting to the possible black of this channel or freezes video, then whether system's deep scanning that can cause channel represents specified characteristic really with acknowledgement channel.If deeply scanning takes place, then handle turning back to 802.For example, if discerned black or freezed the possibility of video, then system can be through checking that to this channel and on the longer time section more frame of video obtain high confidence level and measure.If deeply scanning does not take place, then the processing of current channel can stop, as shown in 816.At this moment, method 800 can start about next channel that will assess.
Although the illustrated embodiment of disclosed technology generally pays close attention to the IP video, a those of ordinary skill of this area will recognize that execution mode also goes for satellite, cable or ground transmission medium.
Can implement the general description of suitable machine of the embodiment of disclosed technology therein
Following discussion aims to provide the general description of the suitable machine of the concise and to the point embodiment that can implement disclosed technology therein.Be intended to broadly to contain individual machine or the machine of the communicative couplings of operation or the system of device together like term " machine " in this use.Example machine can comprise the calculation element such as personal computer, work station, server, portable computer, hand-held device, board device etc.
Typically; Machine comprises system bus; Processor, memory (for example, random-access memory (ram), read-only memory (ROM) and other states keep medium), storage device, video interface and input/output interface port can be attached to this system bus.Machine can also comprise the embedded controller such as able to programme or non-programmable logic device or array, application-specific integrated circuit (ASIC), embedded computer, smart card etc.Machine can be at least in part through from the input of conventional input unit (for example keyboard and mouse) and the instruction through receiving, control with mutual, biometrics feedback or other input signals of virtual reality (VR) environment from another machine.
Machine can be connected such as utilizing with the one or more of one or more remote machines through network interface, modulator-demodulator or other communicative couplings.Machine can interconnect via physics and/or the logical network such as Intranet, internet, local area network (LAN), wide area network etc.A those of ordinary skill of this area will recognize that network service can utilize various wired and/or radio short or long-range carrier or agreements, comprise radio frequency (RF), satellite, microwave, IEEE (IEEE) 545.11, bluetooth, optics, infrared, cable, laser etc.
Can with reference to or combine related data to describe the embodiment of disclosed technology; The data of said association comprise function, process, data structure, application program, instruction etc., and the data of said association can cause machine to be executed the task when by the machine access or define abstract data type or rudimentary hardware context.Related data for example can be stored in volatibility and/or the nonvolatile memory (for example RAM and ROM) or in other storage devices and related storage medium thereof, the storage medium of said association can comprise hard-drive, floppy disk, optical storage, tape, flash memory, memory stick, digital video disc, biometric storage and other tangible physical storage mediums.
Related data can be through comprising physics and/or logical network transmission environment send with the form of the signal of bag, serial data, parallel data, propagation etc., and can use with compression or encryption format.Related data can be used in the distributed environment, and local and/or remotely store to be used for the machine access.
The illustrated embodiment of reference describes and principle of the present invention has been described, will recognize: illustrated embodiment can make amendment aspect layout and the details under the situation that does not depart from this principle, and can make up with any desirable mode.Although and above-mentioned discussion pays close attention to specific embodiment, expect other configurations.Especially, although use the word that waits such as " according to embodiments of the invention " at this, these phrases mean general reference implementation example possibility, and are not intended to be restricted to specific embodiment to the present invention and dispose.These terms as in this use can be with reference to the identical or different embodiment of other embodiment of one-tenth capable of being combined.
Therefore, in view of the various displacements to embodiment described herein, it only is illustrative that this detailed description and institute's enclosure material are intended to, and should not be regarded as limiting scope of the present invention.Therefore the present invention is required for protection is the scope and the interior all such modifications of spirit that can drop on accompanying claims and equivalent thereof.
Claims (20)
1. apparatus control method of estimating video data stream comprises:
From video data source receiving video data stream, this video data stream comprises a plurality of channels, and each channel comprises a plurality of frame of video;
Select with these a plurality of channels in specific corresponding a plurality of frame of video at least two;
From this video data stream, extract selected frame of video;
The decode frame of video of each extraction;
With in the decoded video frames at least one with the original frame of video of preserving of (one or more) other decoded video frames or at least one at least one compare; And
Based on said comparison, prepare the evaluation of video data stream at least in part.
2. the apparatus control method of evaluation video data stream according to claim 1, wherein this video data stream comprises in the group of being made up of Internet Protocol (IP) video, video that satellite provides, video that cable provides and terrestrial transmission video.
3. the apparatus control method of evaluation video data stream according to claim 1, wherein said selection comprise select with these a plurality of channels in specific corresponding at least two independent vide frames (I frame).
4. the apparatus control method of evaluation video data stream according to claim 1, wherein said selection comprise select with these a plurality of channels in specific corresponding at least one independent vide frame (I frame) and at least one two-way video frame (B frame) or prediction video frame (P frame).
5. the apparatus control method of evaluation video data stream according to claim 1, also comprise to with these a plurality of channels in the corresponding a plurality of frame of video of a specific different channel at least two the said selections of execution, extraction, decoding, comparison and preparations.
6. the apparatus control method of evaluation video data stream according to claim 5, also comprise at least in part based on the prioritized list of at least one subclass of these a plurality of channels select with these a plurality of channels in a specific different channel.
7. the apparatus control method of evaluation video data stream according to claim 1; Also comprise; To with these a plurality of channels in specific different a plurality of channels in each corresponding a plurality of frame of video at least two execution said selection, extraction, decoding, comparison and preparations after, repeat said selection, extraction, decoding, comparison and preparation to specific one in these a plurality of channels.
8. the apparatus control method of evaluation video data stream according to claim 1, wherein said extraction comprises:
Establishment comprises the generated data stream corresponding to the information of each selected frame of video;
Format this generated data stream; And
Add the frame of video customizing messages corresponding to each selected frame of video to this generated data stream, this frame of video customizing messages comprises at least one in the group of being made up of channel information, time sequence information and metadata.
9. the apparatus control method of evaluation video data stream according to claim 1, wherein said decoding comprises:
Prepare decoder to receive the frame of video of extracting;
With the said decoder of frame of video transmission process that extracts; And
Collection is from the dateout of decoder; And the method for wherein estimating video data stream also comprises:
In response to the mistake during decoding, send error message to controll block.
10. the apparatus control method of evaluation video data stream according to claim 1, wherein said preparation comprises the said decoder that resets after initial decoding.
11. the apparatus control method of evaluation video data stream according to claim 1, possibly represent that basic black video appears or confirming of freezing basically that video appears and generate warning wherein said relatively comprising in response to decoded video frames.
12. the apparatus control method of evaluation video data stream according to claim 11 also comprises second evaluation that when generating said warning, repeats said selection, extraction, decoding and relatively prepare video data stream through the additional video frame to the given number in the video data stream.
13. the apparatus control method of evaluation video data stream according to claim 1, generate warning wherein said relatively comprising in response to decoded video frames confirming of possibly representing that block video appears.
14. the apparatus control method of evaluation video data stream according to claim 13 also comprises second evaluation that when generating said warning, repeats said selection, extraction, decoding and relatively prepare video data stream through the additional frame to the given number in the video data stream.
15. the apparatus control method of evaluation video data stream according to claim 1 also comprises the selected frame of video of storage.
16. the machine readable media that one or more are tangible, the storage machine-executable instruction, said machine-executable instruction makes said machine carry out the apparatus control method of evaluation video data stream according to claim 1 when being carried out by machine.
17. a video data stream evaluation system comprises:
The video data receiver is used to receive the video data stream of input in operation;
Video data is selected module, is used in operation in the video data stream of input, selecting at least two frame of video, and these at least two frame of video are corresponding to special channels;
The video data extraction module is used for extracting selected frame of video from this video data stream in operation;
Video data decoder is used for the selected frame of video of decoding and extracting from this video data stream in operation;
The video data comparison module is used for each decoded video frames of comparison and at least one reference video frame in operation; And
The video data evaluation module is used for generating the report to this particular channel based on the output information that receives from this video data comparison module at least in part in operation.
18. video data stream evaluation system according to claim 17; Wherein this at least one reference video frame comprises other one or more decoded video frames or one or more original stored video frames, perhaps one or more decoded video frames and one or more original stored video frames.
19. video data stream evaluation system according to claim 17 also comprises memory module, this memory module is used to store selected frame of video in operation and provides stored video frames to carry out comparison subsequently for this video data comparison module.
20. video data stream evaluation system according to claim 17, wherein this video data evaluation module also is used for being directed against to recipient's transmission of regulation the report of this particular channel in operation.
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Application publication date: 20120919 |