WO2018045682A1 - Procédé et dispositif de test de synchronisation d'audio et d'image - Google Patents

Procédé et dispositif de test de synchronisation d'audio et d'image Download PDF

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Publication number
WO2018045682A1
WO2018045682A1 PCT/CN2016/112984 CN2016112984W WO2018045682A1 WO 2018045682 A1 WO2018045682 A1 WO 2018045682A1 CN 2016112984 W CN2016112984 W CN 2016112984W WO 2018045682 A1 WO2018045682 A1 WO 2018045682A1
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Prior art keywords
video
frame number
audio
current
frame
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PCT/CN2016/112984
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English (en)
Chinese (zh)
Inventor
刘桂芳
平安
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深圳Tcl数字技术有限公司
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Publication of WO2018045682A1 publication Critical patent/WO2018045682A1/fr

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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
    • H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
    • H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44204—Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched

Definitions

  • the invention relates to the technical field of audio and video testing, and in particular to a method and device for synchronizing audio and video.
  • the common way to test audio and video synchronization is to watch TV on the tester and compare whether the lips of the characters in the video picture and the sounds heard are synchronized. Due to the individual differences of the testers, there will be an error of about 200ms, and many enthusiasts can not tolerate the error of 200ms and cause complaints. Therefore, it is necessary to objectively test whether the video and audio of the video are synchronized.
  • the existing method of objectively synchronizing the sound and picture can only be the standard test signal of the black and white field, but can not test the video actually viewed by the user, and the test of the standard test signal cannot accurately represent the actual viewing of the user. Whether the audio and video of the video is synchronized, the detection process is not simple enough.
  • the invention provides a sound and picture synchronization test method and device, aiming at solving the technical problem that the existing sound picture synchronous test method is not objective, accurate and simple.
  • the present invention provides a method for synchronizing audio and video, and the method for synchronizing audio and video includes:
  • the audio signal is determined as a check point from no-to-sometime corresponding playback time, and the first frame number corresponding to each checkpoint is obtained from the video after adding the frame number.
  • the terminal plays the video with the frame number added
  • the audio signal is detected from the Nth time to the Nth time
  • the second frame number corresponding to the current video picture is acquired, and the Nth check point corresponding to the playback time is sorted according to the playback time.
  • the first frame number, the currently obtained second frame number, and the preset first threshold value determine whether the current audio and video is synchronized; wherein the values of N are 1, 2, 3, .
  • the step of determining whether the current audio and video is synchronized according to the first frame number corresponding to the Nth check point arranged in ascending order according to the playing time, the currently acquired second frame number, and the preset first threshold value includes: :
  • the audio signal is determined as a check point from no-to-sometime corresponding playback time, and each check point is obtained from the video after adding the frame number.
  • the steps of the first frame numbering include:
  • the intensity of the audio signal is detected in real time
  • the video frame corresponding to the current checkpoint is parsed from the video after the frame number is added to obtain the frame number, and the obtained frame number is used as the first frame number corresponding to the current checkpoint.
  • the audio and video synchronization test method further includes:
  • the control implementation frame number is displayed at a specified position of the corresponding video screen when the terminal plays the video.
  • the step of acquiring the second frame number corresponding to the current video picture when the audio signal is detected from the Nth to the Nth time includes:
  • the intensity of the audio signal is detected in real time when the terminal plays the video with the frame number added;
  • the current video frame is captured by the preset camera
  • the captured video frame is subjected to image processing to acquire a frame number on the video screen, and the obtained frame number is used as a second frame number corresponding to the current video screen.
  • the present invention further provides an audio and video synchronization testing device, where the audio and video synchronization testing device includes:
  • a video processing module configured to sequentially add a frame number in each frame of the video
  • a checkpoint determining module configured to determine, when the audio data of the video is read by the audio decoder, a playback time of the audio signal from no to sometimes corresponding to a checkpoint, and obtain each checkpoint from the video after adding the frame number Corresponding first frame numbers;
  • the synchronization test module is configured to: when the terminal plays the video with the added frame number, when the Nth detected the audio signal from the end to the time, obtain the second frame number corresponding to the current video frame, and arrange the data according to the playback time in ascending order.
  • the first frame number corresponding to the N checkpoints, the currently obtained second frame number, and the preset first threshold value determine whether the current audio and video is synchronized; wherein the values of N are 1, 2, 3, .
  • the synchronization test module includes a determination unit, and the determination unit is configured to:
  • the checkpoint determining module comprises:
  • a detecting unit configured to detect the intensity of the audio signal in real time when the audio data of the video is read by the audio decoder
  • a determining unit configured to determine a play time corresponding to the current audio signal as a check point when detecting that the strength of the audio signal changes from zero to a preset second threshold
  • an obtaining unit configured to parse the video frame corresponding to the current checkpoint from the video after adding the frame number to obtain a frame number, and use the obtained frame number as the first frame number corresponding to the current checkpoint.
  • the video processing module is specifically configured to:
  • the control implementation frame number is displayed at a specified position of the corresponding video screen when the terminal plays the video.
  • the synchronization test module includes a detection unit, and the detection unit includes:
  • the detecting subunit is configured to detect the intensity of the audio signal in real time when the terminal plays the video with the frame number added;
  • a capture subunit configured to capture a current video frame by using a preset camera when detecting that the intensity of the audio signal changes from zero to a preset third threshold
  • the acquiring sub-unit is configured to perform image processing on the captured video picture to obtain a frame number on the video picture, and use the obtained frame number as a second frame number corresponding to the current video picture.
  • the method and device for synchronizing sound and picture proposed by the present invention sequentially add frame numbers in each frame of the video, and then read the audio data of the video through the audio decoder to determine the checkpoint of the audio signal from no time to time. And acquiring the first frame number corresponding to each checkpoint from the video after adding the frame encoding; when playing the video with the added frame number on the terminal, when the audio signal is detected from the Nth to the Nth time, the current video image is acquired. Corresponding second frame number, and determining whether the current audio and video is synchronized according to the first frame number corresponding to the Nth check point, the currently acquired second frame number, and the preset first threshold according to the playback time. .
  • the video used in the test may be any video actually viewed by the user, and when there is a re-sound at the same sound pause, the difference between the frame number that should be played at this time and the frame number currently being played is compared, thereby realizing the actual user. Watch the video for an objective, accurate, and simple audio and video synchronization test.
  • FIG. 1 is a schematic flow chart of a first embodiment of a sound and picture synchronization test method according to the present invention
  • FIG. 2 is a schematic diagram of a refinement process of step S20 in FIG. 1;
  • FIG. 3 is a schematic diagram of a refinement process for obtaining a second frame number corresponding to a current video picture in a third embodiment of the audio and video synchronization test method according to the present invention
  • FIG. 4 is a schematic diagram of functional modules of a first embodiment of an audio and video synchronization test apparatus according to the present invention
  • FIG. 5 is a schematic diagram of a refinement function module of the checkpoint determining module in FIG. 4;
  • FIG. 6 is a schematic diagram of a refinement function module of a synchronization test module in a third embodiment of the audio and video synchronization test apparatus of the present invention.
  • the present invention provides a sound and picture synchronization test method. As shown in FIG. 1 , a flow chart of a first embodiment of the sound and picture synchronization test method of the present invention is shown.
  • the sound and picture synchronization test method includes:
  • a video that is any video that the user actually watches. It can be a complete long video or a small video captured from a complete long video. .
  • the audio signal is determined as a check point from no-to-sometime corresponding playback time, and the first corresponding to each checkpoint is obtained from the video after adding the frame number.
  • step S20 includes:
  • the video includes image data (ie, video frame data) and audio data, and the data is stored in the same data packet.
  • image data ie, video frame data
  • audio data When the image needs to be read, the image data in the data packet is parsed, and when the audio data needs to be read, When parsing the audio data in the packet.
  • the audio data of the video segment (which may also refer to the video after adding the frame number) is read by the audio decoder, the audio signal corresponding to each playing time of the audio data (consistent with the playing time of the video segment) may be obtained. .
  • the playback time corresponding to the audio signal is determined as a checkpoint, and the video frame corresponding to the current checkpoint is parsed from the video after adding the frame number to obtain the frame number in the video frame, and the obtained frame number is The first frame number corresponding to the current checkpoint (ie, the current play time).
  • the first frame number is a frame number of a video frame corresponding to each checkpoint in the video;
  • the second threshold is a preset audio signal strength value, and the audio signal indicating that the intensity value exceeds the second threshold belongs to The audio signal of the sound.
  • the terminal may be a television set, or a hardware device such as a mobile phone that can play video and needs to process image display and audio play of the video.
  • the second frame number is a type of frame number used to distinguish the first frame number, and represents a frame number acquired when the video is played through the terminal.
  • the values of N are 1, 2, 3, ... in order.
  • the video during the test is the TS (Transport) obtained after the live digital signal actually received by the TV is processed.
  • the real-time audio signal and the video frame data can be obtained.
  • the audio signal is detected from scratch, that is, the intensity of the audio signal changes from zero to a preset third threshold, the current video is acquired on the one hand.
  • the second frame number of the video frame to which the picture belongs and on the other hand, according to the order in which the audio signal is detected from the end, that is, the Nth time, the Nth check point and the play time are sorted in ascending order.
  • the first frame number corresponding to the checkpoint ie, the playback time at which the sound is re-sounded at the Nth sound pause in the synchronous playback of the audio and video
  • the threshold determines whether the current audio and video are synchronized.
  • the third threshold is also an audio signal strength value set in advance, and the value may be the same as or different from the second threshold.
  • the preset first threshold is the time difference value and the value is 500 ms
  • the absolute difference between the first frame number and the second frame number is The value is
  • 36
  • the sound and picture synchronization test method proposed by the invention adds the frame number sequentially in each frame of the video, and then reads the audio data of the video through the audio decoder to determine the checkpoint of the audio signal from no time to time, and from Adding a frame-encoded video to obtain a first frame number corresponding to each checkpoint; when playing a video with a frame number added on the terminal, when the audio signal is detected from the Nth time to the Nth time, the current video picture is acquired.
  • the second frame number is determined according to the first frame number corresponding to the Nth check point arranged in ascending order, the currently acquired second frame number, and the preset first threshold value, and whether the current audio and video is synchronized.
  • the video used in the test may be any video actually viewed by the user, and when there is a re-sound at the same sound pause, the difference between the frame number that should be played at this time and the frame number currently being played is compared, thereby realizing the actual user. Watch the video for an objective, accurate, and simple audio and video synchronization test.
  • the second embodiment of the sound and picture synchronization test method of the present invention is proposed based on the first embodiment of the above-described sound and picture synchronization test method.
  • the Nth check point corresponding to the play time is arranged in ascending order.
  • a frame number, a currently obtained second frame number, a preset first threshold, and a step of determining whether the current audio clip is synchronized includes:
  • the first threshold is a threshold set for an absolute difference of frame numbers. Assume that the first frame number currently obtained is 950, the second frame number is 986, and the first threshold value is 30, and the absolute difference of the frame number is
  • 36, which is greater than the preset first threshold value 30, It is thus possible to determine that the current picture is out of sync. Further, the played video can be synchronized with the sound and picture according to the absolute difference of the frame number.
  • the sound and picture synchronization test method proposed by the present invention calculates the absolute difference between the first frame number and the second frame number, and compares the calculated absolute difference with the preset first threshold value to determine the current sound. Whether the painting is synchronized, the judgment process is simple and fast, and the judgment result is accurate.
  • the third embodiment of the sound and picture synchronization test method of the present invention is proposed based on the second embodiment of the sound and picture synchronization test method.
  • the sound and picture synchronization test method further includes:
  • the control implementation frame number is displayed at a specified position of the corresponding video screen when the terminal plays the video.
  • the frame number 1 can be displayed at a specified position (such as the lower right corner) of the video frame corresponding to the first frame of the video, and the same position of the video frame corresponding to the second frame of the video.
  • Can display frame number 2 and so on.
  • the step of acquiring the second frame number corresponding to the current video picture includes:
  • the serial port connection with the terminal can be used to obtain the real-time audio signal intensity from the audio processing device (such as a speaker) of the terminal, and can also capture the sound during video playback through a device such as a microphone, thereby obtaining real-time audio.
  • the strength of the signal can be used to obtain the real-time audio signal intensity from the audio processing device (such as a speaker) of the terminal, and can also capture the sound during video playback through a device such as a microphone, thereby obtaining real-time audio. The strength of the signal.
  • the preset video camera is used to align the video picture of the video, and when the audio signal is detected from scratch, the intensity of the audio signal changes from zero to over the preset.
  • the control camera captures the current video frame.
  • the frame number on the video picture is extracted by using image processing technology, and the extracted frame number is the second frame number corresponding to the current video picture.
  • the control frame number is displayed at a specified position of the corresponding video picture when the terminal plays the video, so that the tester can intuitively view the respective test points (ie, the audio signal from none to the time) corresponding to the video picture.
  • the frame number is obtained, and the frame number can be captured by a preset camera to obtain the second frame number required for the test.
  • the present invention also provides a sound and picture synchronization testing device. As shown in FIG. 4, a schematic diagram of a functional module of the first embodiment of the audio and video synchronization testing device of the present invention is shown.
  • the audio and video synchronization testing device includes:
  • the video processing module 100 is configured to sequentially add a frame number in each frame of the video;
  • a video that is any video that the user actually watches. It can be a complete long video or a small video captured from a complete long video. .
  • the video processing module 100 may number 1- 30000 is sequentially added to each frame of the video according to the order of the video frames, that is, the first frame of the video is numbered 1, the second frame is numbered 2, the 800th frame is numbered 800, and so on.
  • the added frame number can be stored in the video frame data corresponding to each frame.
  • the checkpoint determining module 200 is configured to determine, when the audio data of the video is read by the audio decoder, a playback time of the audio signal from no to sometimes corresponding to a checkpoint, and obtain each check from the video after adding the frame number. Point each corresponding first frame number;
  • the checkpoint determining module 200 includes:
  • the detecting unit 201 is configured to detect the intensity of the audio signal in real time when the audio data of the video is read by the audio decoder;
  • the determining unit 202 is configured to determine, when the intensity of the audio signal is changed from zero to exceed a preset second threshold, a play time corresponding to the current audio signal as a checkpoint;
  • the obtaining unit 203 is configured to parse the video frame corresponding to the current checkpoint from the video after adding the frame number to obtain the frame number, and use the obtained frame number as the first frame number corresponding to the current checkpoint.
  • the video includes image data (ie, video frame data) and audio data, and the data is stored in the same data packet.
  • image data ie, video frame data
  • audio data When the image needs to be read, the image data in the data packet is parsed, and when the audio data needs to be read, When parsing the audio data in the packet.
  • the audio data of the video segment (which may also refer to the video after adding the frame number) is read by the audio decoder, the audio signal corresponding to each playing time of the audio data (consistent with the playing time of the video segment) may be obtained. .
  • the detecting unit 201 detects the intensity of the audio signal in the reading process in real time, and the determining unit 202 detects that the audio signal is from nothing, that is, the intensity of the audio signal changes from zero to a higher value, and the value is greater than
  • the playback time corresponding to the audio signal is determined as a checkpoint
  • the obtaining unit 203 parses the video frame corresponding to the current checkpoint from the video after adding the frame number to obtain the video frame.
  • Frame number, the obtained frame number is the current check point (that is, the current play time), and the corresponding first frame number.
  • the first frame number is a frame number of a video frame corresponding to each checkpoint in the video;
  • the second threshold is a preset audio signal strength value, and the audio signal indicating that the intensity value exceeds the second threshold belongs to The audio signal of the sound.
  • the synchronization test module 300 is configured to: when the terminal plays the video with the frame number added, when the audio signal is detected from the Nth time to the Nth time, the second frame number corresponding to the current video picture is obtained, and is arranged in ascending order according to the playing time.
  • the first frame number corresponding to the Nth checkpoint, the currently acquired second frame number, and the preset first threshold value determine whether the current audio and video is synchronized.
  • the terminal may be a television set, or a hardware device such as a mobile phone that can play video and needs to process image display and audio play of the video.
  • the second frame number is a type of frame number used to distinguish the first frame number, and represents a frame number acquired when the video is played through the terminal.
  • the values of N are 1, 2, 3, ... in order.
  • the video at the time of the test is a TS video file obtained by processing the live digital signal actually received by the television.
  • the video after adding the frame number is played on the television.
  • the synchronous test module 300 can be connected to the television through the serial cable to obtain the required data.
  • the synchronization test module 300 can obtain the real-time audio signal and the video frame data.
  • the aspect obtains the second frame number of the video frame to which the current video picture belongs, and on the other hand, according to the order in which the audio signal is detected from scratch, that is, the Nth time, the check point determined before the acquisition and the play time are arranged in ascending order.
  • the first frame number corresponding to the Nth checkpoint ie, the playback time at which the sound is re-sound at the Nth sound pause in the synchronous playback of the audio and video
  • the first threshold is set to determine whether the current audio and video are synchronized.
  • the third threshold is also an audio signal strength value set in advance, and the value may be the same as or different from the second threshold.
  • the synchronization test module 300 can determine that the current audio and video are not synchronized. Further, the played video can be synchronously corrected according to the calculated time difference.
  • the audio-visual synchronization test device proposed by the present invention sequentially adds a frame number in each frame of the video, and then reads the audio data of the video through the audio decoder to determine the checkpoint of the audio signal from no time to time, and from Adding a frame-encoded video to obtain a first frame number corresponding to each checkpoint; when playing a video with a frame number added on the terminal, when the audio signal is detected from the Nth time to the Nth time, the current video picture is acquired.
  • the second frame number is determined according to the first frame number corresponding to the Nth check point arranged in ascending order, the currently acquired second frame number, and the preset first threshold value, and whether the current audio and video is synchronized.
  • the video used in the test may be any video actually viewed by the user, and when there is a re-sound at the same sound pause, the difference between the frame number that should be played at this time and the frame number currently being played is compared, thereby realizing the actual user. Watch the video for an objective, accurate, and simple audio and video synchronization test.
  • the second embodiment of the sound and picture synchronization test apparatus of the present invention is proposed based on the first embodiment of the audio and video synchronization test apparatus.
  • the synchronization test module 300 includes a determination unit 301, and the determination unit 301 uses to:
  • the first threshold is a threshold set for an absolute difference of frame numbers. Assume that the first frame number currently obtained is 950, the second frame number is 986, and the first threshold value is 30, and the absolute difference of the frame number is
  • 36, which is greater than the preset first threshold value 30, Therefore, the judging unit 301 can judge that the current sound and picture are not synchronized. Further, the played video can be synchronized with the sound and picture according to the absolute difference of the frame number.
  • the audio-visual synchronization testing device of the present invention calculates the absolute difference between the first frame number and the second frame number, and compares the calculated absolute difference with the preset first threshold value to determine the current sound. Whether the painting is synchronized, the judgment process is simple and fast, and the judgment result is accurate.
  • the third embodiment of the sound and picture synchronization testing device of the present invention is proposed based on the second embodiment of the audio and video synchronization testing device.
  • the video processing module 100 is specifically configured to:
  • the control implementation frame number is displayed at a specified position of the corresponding video screen when the terminal plays the video.
  • the frame number 1 can be displayed at a specified position (such as the lower right corner) of the video frame corresponding to the first frame of the video, and the same position of the video frame corresponding to the second frame of the video.
  • Can display frame number 2 and so on.
  • the synchronization test module 300 further includes a detection unit 302, and the detection unit 302 includes:
  • the detecting subunit is configured to detect the intensity of the audio signal in real time when the terminal plays the video with the frame number added;
  • the serial port connection with the terminal can be used to obtain the real-time audio signal strength from the audio processing device (such as a speaker) of the terminal, and can also capture the sound during video playback through a device such as a microphone, thereby enabling the detection subunit. Get the strength of the real-time audio signal.
  • a capture subunit configured to capture a current video frame by using a preset camera when detecting that the intensity of the audio signal changes from zero to a preset third threshold
  • the preset video camera is used to align the video picture of the video, and when the audio signal is detected from scratch, the intensity of the audio signal changes from zero to over the preset.
  • the capture subunit controls the camera to capture the current video frame.
  • the acquiring sub-unit is configured to perform image processing on the captured video picture to obtain a frame number on the video picture, and use the obtained frame number as a second frame number corresponding to the current video picture.
  • the acquisition sub-unit After the current video picture is obtained by the camera, the acquisition sub-unit extracts the frame number on the video picture by using image processing technology, and the extracted frame number is the second frame number corresponding to the current video picture.
  • the sound and picture synchronization testing device proposed by the invention displays the control frame number in a designated position of the corresponding video picture when the terminal plays the video, so that the tester can intuitively view the respective test points (ie, the audio signal from none to the time) corresponding to the video picture.
  • the frame number is obtained, and the frame number can be captured by a preset camera to obtain the second frame number required for the test.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La présente invention concerne un procédé de test de synchronisation d'audio et d'image, comportant les étapes consistant à: ajouter séquentiellement un numéro de série de trame à chaque trame d'une vidéo; lorsque les données audio de la vidéo sont lues au moyen d'un décodeur audio, déterminer l'instant où un signal audio est reproduit et utiliser cet instant comme point de contrôle, et acquérir, à partir de la vidéo à laquelle ont été ajoutés les numéros de série de trames, un premier numéro de série de trame correspondant à chaque point de contrôle; pendant qu'un terminal reproduit la vidéo à laquelle ont été ajoutés les numéros de série de trames, lorsqu'il est détecté pour la Nième fois qu'un signal audio est reproduit, acquérir un deuxième numéro de série de trame correspondant à l'image vidéo actuelle, et d'après le premier numéro de série de trame correspondant au Nième point de contrôle rangé par ordre croissant d'instant de reproduction, le deuxième numéro de série de trame actuellement acquis et un premier seuil prédéfini, déterminer si l'audio et l'image actuels sont synchrones; la valeur de N étant 1, 2, 3… successivement. La présente invention concerne en outre un dispositif de test de synchronisation d'audio et d'image. La présente invention réalise un test objectif, précis et simple de synchronisation d'audio et d'image sur la vidéo qu'un utilisateur visionne réellement.
PCT/CN2016/112984 2016-09-07 2016-12-29 Procédé et dispositif de test de synchronisation d'audio et d'image WO2018045682A1 (fr)

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CN201610808577.4A CN106358039B (zh) 2016-09-07 2016-09-07 音画同步测试方法及装置

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CN114007064A (zh) * 2021-11-01 2022-02-01 腾讯科技（深圳）有限公司 特效同步评估方法、装置、设备及存储介质、程序产品

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