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WO2018032361A1 - Procédé et dispositif d'évaluation de qualité vidéo - Google Patents

Procédé et dispositif d'évaluation de qualité vidéo Download PDF

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Publication number
WO2018032361A1
WO2018032361A1 PCT/CN2016/095547 CN2016095547W WO2018032361A1 WO 2018032361 A1 WO2018032361 A1 WO 2018032361A1 CN 2016095547 W CN2016095547 W CN 2016095547W WO 2018032361 A1 WO2018032361 A1 WO 2018032361A1
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WIPO (PCT)
Prior art keywords
video
download speed
average
download
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/095547
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English (en)
Chinese (zh)
Inventor
许琼涛
李文
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2016/095547 priority Critical patent/WO2018032361A1/fr
Priority to CN201680088161.8A priority patent/CN109565586A/zh
Publication of WO2018032361A1 publication Critical patent/WO2018032361A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details

Definitions

  • the present application relates to the field of video technologies, and in particular, to a video quality assessment method and apparatus.
  • the International Telecommunication Union proposes an evaluation method for video quality from the perspective of user experience.
  • the evaluation method determines a vMOS (Video Mean Opinion Score) value of the video according to the quality of the video source and the playback delay.
  • the quality of the video source depends on the screen resolution, video resolution, video coding technology, video bit rate, and quality of the video source itself of the terminal device that plays the video.
  • the above evaluation method mainly evaluates the video quality on the user side.
  • the video data forwarding device since the network security problem is involved, the video data is generally encrypted and transmitted, so that the user plane video data cannot be deeply analyzed, and the video cannot be obtained.
  • Source information such as video resolution, video encoding technology, video bitrate, etc., makes it impossible to evaluate video quality.
  • the embodiment of the present application provides a video quality evaluation method and apparatus for evaluating video quality in the case of video encryption transmission.
  • An embodiment of the present application provides a video quality assessment method, including:
  • the network device determines a video average download speed, a video best download speed, and a video download speed fluctuation rate of the terminal device, wherein the video average download speed is an average download speed of the video during a playback duration of the video, The video tries to download the speed for the video in the Playing an average download speed in a valid download period during a duration period, wherein the valid download period is a sum of all time periods in which the download speed is greater than a threshold in the playback duration; the video download speed fluctuation rate is buffer a ratio of the time period to the playing duration period, wherein the buffering time period is a sum of all time periods in which the download speed is less than the video average download speed in the playing duration period;
  • the network device determines a video quality metric vMOS of the video according to the video average download speed, the video best effort download speed, and the video download speed volatility.
  • the network device may determine, according to the video average download speed, the video best download speed, and the video download speed fluctuation rate. The quality of the video, thereby enabling evaluation of video quality in the case of video encrypted transmission.
  • the network device determines, according to the video average download speed, the video best download speed, and the video download speed fluctuation rate, that the vMOS of the video meets the following formula:
  • avgrate is the average download speed of the video
  • P1 is a weight value corresponding to the average download speed of the video
  • striverate is the best-effort download speed of the video
  • P2 is a weight value corresponding to the best-effort download speed of the video
  • the Fluctuation is the The video download speed fluctuation rate
  • P3 is a weight value corresponding to the video download speed fluctuation rate.
  • the method further includes:
  • the network device determines a video quality level corresponding to the video according to a vMOS of the video.
  • the threshold is 0.
  • An embodiment of the present application provides a video quality evaluation apparatus, where the apparatus includes:
  • a first determining unit configured to determine a video average download speed, a video best download speed, and a video download speed fluctuation rate of the terminal device, where the video average download speed is the video in the An average download speed during a playback duration of the video, the video best download speed being an average download speed of the video during a valid download period of the playback duration, the valid download period being a sum of all time periods in which the download speed is greater than a threshold in a playback duration period; the video download speed fluctuation rate is a ratio of a buffer time period to the playback duration period, and the buffer time period is the playback duration period The sum of all time periods in which the internal download speed is less than the average download speed of the video;
  • a second determining unit configured to determine a video quality metric vMOS of the video according to the video average download speed, the video best effort download speed, and the video download speed volatility.
  • the second determining unit is specifically configured to:
  • avgrate is the average download speed of the video
  • P1 is a weight value corresponding to the average download speed of the video
  • striverate is the best-effort download speed of the video
  • P2 is a weight value corresponding to the best-effort download speed of the video
  • the Fluctuation is the The video download speed fluctuation rate
  • P3 is a weight value corresponding to the video download speed fluctuation rate.
  • the second determining unit is further configured to:
  • the network device determines a video quality level corresponding to the video according to a vMOS of the video.
  • the threshold is 0.
  • An embodiment of the present application provides a video quality evaluation apparatus, where the apparatus includes:
  • a processor configured to determine a video average download speed, a video best download speed, and a video download speed fluctuation rate of the terminal device; wherein the video average download speed is an average download of the video during a playback duration of the video Speed, the video best download speed is an average download speed of the video during an effective download period of the playback duration period, and the effective download period is a download speed greater than a threshold in the playback duration period a sum of all the time periods; the video download speed fluctuation rate is a ratio of the buffer time period to the play duration period, and the buffer time period is that the download speed is less than the average video download speed in the playback duration period All a sum of time periods; determining a video quality metric vMOS of the video based on the video average download speed, the video best effort download speed, and the video download speed volatility.
  • the video average download speed is an average download of the video during a playback duration of the video Speed
  • the video best download speed is an average download speed of the video during an effective download period of the playback
  • the processor is specifically configured to:
  • avgrate is the average download speed of the video
  • P1 is a weight value corresponding to the average download speed of the video
  • striverate is the best-effort download speed of the video
  • P2 is a weight value corresponding to the best-effort download speed of the video
  • the Fluctuation is the The video download speed fluctuation rate
  • P3 is a weight value corresponding to the video download speed fluctuation rate.
  • the processor is further configured to:
  • the network device determines a video quality level corresponding to the video according to a vMOS of the video.
  • the threshold is 0.
  • FIG. 1 is a schematic flowchart of a video quality assessment method according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a video data transmission rate according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a video quality evaluation apparatus according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a video quality evaluation apparatus according to an embodiment of the present application.
  • the embodiments of the present application can be applied to communication systems such as WLAN (Wireless Local Area Networks), LTE (Long Term Evolution), and 5G.
  • WLAN Wireless Local Area Networks
  • LTE Long Term Evolution
  • 5G 5th Generation
  • network device includes but is not limited to a base station, a node, a base station controller, an access point (AP), a mobile station, or any other type capable of working in a wireless or wired environment.
  • AP access point
  • mobile station or any other type capable of working in a wireless or wired environment.
  • Interface device includes but is not limited to a base station, a node, a base station controller, an access point (AP), a mobile station, or any other type capable of working in a wireless or wired environment.
  • the base station when transmitting video data to the terminal device, the base station cannot determine the video resolution, video coding technology, video bit rate, and the like of the video data being played by the terminal device, and thus cannot determine the video quality of the video that the terminal device is playing.
  • FIG. 1 a schematic diagram of a video quality assessment method according to an embodiment of the present application is shown.
  • the method specifically includes the following steps:
  • Step 101 The network device determines a video average download speed, a video best download speed, and a video download speed fluctuation rate of the terminal device, where the average video download speed is an average download of the video during a duration of playing of the video.
  • Speed the video best download speed is an average download speed of the video during an effective download period of the playback duration period, and the effective download period is a download speed greater than a threshold in the playback duration period a sum of all the time periods
  • the video download speed fluctuation rate is a ratio of the buffer time period to the play duration period, and the buffer time period is that the download speed is less than the average video download speed in the playback duration period The sum of all time periods;
  • Step 102 The network device determines a video quality metric vMOS of the video according to the video average download speed, the video best effort download speed, and the video download speed volatility.
  • the average video download speed may be an average download speed of the video during the playback duration of the video.
  • the average video download speed is related to the screen resolution of the terminal device, the video resolution, the video encoding technology, the video bit rate, and the quality of the video source itself. These factors mainly reflect the amount of data required for a video with a long time, the same. The larger the amount of data required for the video in the time period, the better the quality information of the video source, and the higher the average download speed of the video, and vice versa, and will not be described here.
  • the network device when transmitting video data to the terminal device, the network device does not transmit all the video data to the terminal device at one time, but determines the amount of video data required for the terminal device to play the video.
  • the amount of video data transmitted to the terminal device to ensure how much video data is transmitted by the terminal device, so as to prevent the network device from transmitting all the video data to the terminal device, the terminal device is turned off before the video is played. The resources caused by the video being played are wasted.
  • the network device does not continuously transmit video data to the terminal device, but only transmits a certain amount of video data at a time, and then stops transmitting the video data, and when determining that the terminal device needs video data, , the video data is transmitted to the terminal device again.
  • the average download speed of the video during the effective download period of the playback duration is used as the video best download speed.
  • the effective download time period is a sum of all time periods in which the download speed is greater than the threshold in the playback duration period.
  • the threshold value may be 0, and the threshold value may also take other values, which may be determined according to actual conditions, which is not limited by the embodiment of the present application.
  • the video download speed fluctuation rate is a ratio of the buffering time period to the playing duration period, and the buffering time period is that the downloading speed in the playing duration period is less than the average video downloading speed. The sum of all time periods.
  • FIG. 2 it is a schematic diagram of a video data transmission rate provided by an embodiment of the present application.
  • the playback playback duration period is T
  • the average download speed A of the video during the playback duration period is the buffer time period.
  • the buffer time period is the sum of all the time periods in which the download speed is less than A in the playback duration period T, that is,
  • the buffering period is the difference between T1 and T5, the difference between T2 and T6, the difference between T3 and T7, and the difference between T4 and T8. If the threshold is 0, the valid download period is the sum of T1, T2, T3, and T4. Based on the above information, the video quality of the video can be determined.
  • step 102 the network device determines, according to the video average download speed, the video best effort download speed, and the video download speed fluctuation rate, that the quality of the video meets the following formula:
  • vMOS is the quality of the video determined by the network device
  • avgrate is the Video average download speed
  • P1 is a weight value corresponding to the average video download speed
  • striverate is the video best download speed
  • P2 is a weight value corresponding to the video best download speed
  • fluctuation is the video download speed fluctuation rate
  • P3 is a weight value corresponding to the video download speed fluctuation rate.
  • P1, P2, and P3 can be determined according to actual conditions, and are not illustrated here.
  • the determined vMOS is equivalent to scoring the video, and the higher the vMOS, the higher the quality of the video.
  • the video quality level corresponding to the video may be determined according to the relationship between the pre-agreed video quality level and the vMOS.
  • the user experience corresponding to the video quality level may also be included.
  • the video quality level is excellent, and the user thinks that the video is played without delay and the playback is smooth.
  • the vMOS is greater than or equal to 3 and less than 4
  • the video quality level is medium.
  • the delay is more obvious, and the playback is a bit stuck, but acceptable.
  • the network device may determine the quality of the video according to the video average download speed, the video best download speed, and the video download speed fluctuation rate. In order to achieve video quality evaluation in the case of video encryption transmission.
  • the embodiment of the present application further provides a video quality evaluation apparatus, which can perform the method flow described in FIG.
  • the embodiment of the present application provides a schematic structural diagram of a video quality assessment apparatus.
  • the apparatus includes:
  • a first determining unit 301 configured to determine a video average download speed, a video best download speed, and a video download speed fluctuation rate of the terminal device, where the video average download speed is that the video is within a playback duration of the video Average download speed, the video best download speed is an average download speed of the video during a valid download period of the playback duration, and the effective download period is a download speed during the playback duration a sum of all time periods greater than a threshold; the video download speed fluctuation rate is a ratio of a buffer time period to the playback duration period, and the buffer time period is that the download speed is less than the video average during the playback duration period The sum of all time periods of the download speed;
  • the second determining unit 302 is configured to determine a video quality metric vMOS of the video according to the video average download speed, the video best effort download speed, and the video download speed volatility.
  • the second determining unit 302 is specifically configured to:
  • avgrate is the average download speed of the video
  • P1 is a weight value corresponding to the average download speed of the video
  • striverate is the best-effort download speed of the video
  • P2 is a weight value corresponding to the best-effort download speed of the video
  • the Fluctuation is the The video download speed fluctuation rate
  • P3 is a weight value corresponding to the video download speed fluctuation rate.
  • the second determining unit 302 is further configured to:
  • the network device determines a video quality level corresponding to the video according to a vMOS of the video.
  • the threshold is 0.
  • the embodiment of the present application further provides a video quality evaluation apparatus, which can perform the method flow described in FIG.
  • the embodiment of the present application provides a schematic structural diagram of a video quality evaluation apparatus.
  • the apparatus includes a processor 401, a memory 402, and a transceiver 403.
  • the transceiver 403 is coupled to the processor 401 for supporting communication between the video quality assessment device and the terminal.
  • the memory 402 is for holding program instructions and is coupled to the processor 401.
  • the processor 401 is configured to determine a video average download speed, a video best download speed, and a video download speed fluctuation rate of the terminal device, where the video average download speed is an average of the video during the playback duration of the video.
  • a download speed wherein the video download speed is an average download speed of the video during a valid download period of the playback duration period, and the effective download period is a download speed greater than a threshold during the playback duration period
  • the sum of all the time periods; the video download speed fluctuation rate is a ratio of the buffer time period to the play duration period, and the buffer time period is that the download speed is less than the video average download speed during the play duration period
  • the sum of all time periods; the video quality metric vMOS of the video is determined based on the video average download speed, the video best effort download speed, and the video download speed volatility.
  • the processor 401 is specifically configured to:
  • avgrate is the average download speed of the video
  • P1 is the average download speed of the video.
  • the weight value is: the effortrate is the download speed of the video, the P2 is the weight value corresponding to the video best download speed; the fuctuation is the video download speed fluctuation rate, and P3 is the weight value corresponding to the video download speed fluctuation rate.
  • the processor 401 is further configured to:
  • the network device determines a video quality level corresponding to the video according to a vMOS of the video.
  • the threshold is 0.
  • the transceiver can be a wired transceiver, a wireless transceiver, or a combination thereof.
  • the wired transceiver can be, for example, an Ethernet interface.
  • the Ethernet interface can be an optical interface, an electrical interface, or a combination thereof.
  • the wireless transceiver can be, for example, a wireless local area network transceiver, a cellular network transceiver, or a combination thereof.
  • the processor may be a central processing unit (English: central processing unit, abbreviated: CPU), a network processor (English: network processor, abbreviated: NP) or a combination of CPU and NP.
  • the processor may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (abbreviated as PLD), or a combination thereof.
  • the above PLD can be a complex programmable logic device (English: complex programmable logic device, abbreviation: CPLD), field-programmable gate array (English: field-programmable gate array, abbreviation: FPGA), general array logic (English: generic array Logic, abbreviation: GAL) or any combination thereof.
  • the memory may include a volatile memory (English: volatile memory), such as random access memory (English: random-access memory, abbreviation: RAM); the memory may also include non-volatile memory (English: non-volatile memory).
  • read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state drive (English: solid-state drive, Abbreviation: SSD); the memory may also include a combination of the above types of memory.
  • the bus interface may also be included in FIG. 4, and the bus interface may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by the processor and various circuits of the memory represented by the memory. .
  • the bus interface can also be used such as peripherals, voltage regulators and power Various other circuits, such as management circuits and the like, are linked together, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver provides means for communicating with various other devices on a transmission medium.
  • the processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer usable memory channels (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.
  • the present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • the computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine instruction for generating instructions executed by a processor of a computer or other programmable data processing device Means for implementing the functions specified in one or more flows of the flowchart or in a block or blocks of the flowchart.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
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  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Procédé et dispositif d'évaluation de qualité vidéo, comportant les étapes suivantes: un dispositif de réseau détermine une vitesse moyenne de téléchargement de vidéo, une vitesse de téléchargement de vidéo de meilleur effort et un taux de fluctuation de la vitesse de téléchargement de vidéo d'un dispositif terminal, la vitesse moyenne de téléchargement de vidéo étant la vitesse moyenne de téléchargement d'une vidéo au cours d'une durée de lecture de la vidéo, la vitesse de téléchargement de vidéo de meilleur effort étant une vitesse moyenne de téléchargement de la vidéo au cours d'une période effective de téléchargement pendant la durée de lecture, la période effective de téléchargement étant la somme de toutes les périodes au cours de la durée de lecture pendant lesquelles la vitesse de téléchargement est supérieure à un seuil; le taux de fluctuation de la vitesse de téléchargement de vidéo étant un rapport d'une période de mise en tampon à la durée de lecture, et la période de mise en tampon étant la somme de toutes les périodes au cours de la durée de lecture pendant lesquelles la vitesse de téléchargement est inférieure à la vitesse moyenne de téléchargement de vidéo; et le dispositif de réseau détermine un score moyen d'opinion de vidéo (vMOS) de la vidéo d'après la vitesse moyenne de téléchargement de vidéo, la vitesse de téléchargement de vidéo de meilleur effort et le taux de fluctuation de la vitesse de téléchargement de vidéo.
PCT/CN2016/095547 2016-08-16 2016-08-16 Procédé et dispositif d'évaluation de qualité vidéo Ceased WO2018032361A1 (fr)

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PCT/CN2016/095547 WO2018032361A1 (fr) 2016-08-16 2016-08-16 Procédé et dispositif d'évaluation de qualité vidéo
CN201680088161.8A CN109565586A (zh) 2016-08-16 2016-08-16 一种视频质量评估方法及装置

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CN110753266A (zh) * 2019-10-23 2020-02-04 深圳市酷开网络科技有限公司 视频清晰度的调整方法、装置和存储介质

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CN104348647A (zh) * 2013-07-31 2015-02-11 腾讯科技（深圳）有限公司 多源带宽调度方法、装置及系统
CN104023232A (zh) * 2014-06-27 2014-09-03 北京邮电大学 基于层次分析和多元线性回归的移动视频质量评估方法
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Publication number Priority date Publication date Assignee Title
CN110493649A (zh) * 2019-09-12 2019-11-22 重庆市群众艺术馆 基于群众满意度的文化馆数字资源加工方法
CN110493649B (zh) * 2019-09-12 2021-08-20 重庆市群众艺术馆 基于群众满意度的文化馆数字资源加工方法
CN110753266A (zh) * 2019-10-23 2020-02-04 深圳市酷开网络科技有限公司 视频清晰度的调整方法、装置和存储介质

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