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WO2017005066A1 - Procédé et appareil d'enregistrement d'estampille temporelle de synchronisation audio et vidéo - Google Patents

Procédé et appareil d'enregistrement d'estampille temporelle de synchronisation audio et vidéo Download PDF

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Publication number
WO2017005066A1
WO2017005066A1 PCT/CN2016/084387 CN2016084387W WO2017005066A1 WO 2017005066 A1 WO2017005066 A1 WO 2017005066A1 CN 2016084387 W CN2016084387 W CN 2016084387W WO 2017005066 A1 WO2017005066 A1 WO 2017005066A1
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WIPO (PCT)
Prior art keywords
audio
data
video
audio data
time stamp
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/CN2016/084387
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English (en)
Chinese (zh)
Inventor
焦新旺
王云华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen TCL Digital Technology Co Ltd
Original Assignee
Shenzhen TCL Digital Technology 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
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Publication of WO2017005066A1 publication Critical patent/WO2017005066A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • 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
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4334—Recording operations
    • 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
    • H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8547—Content authoring involving timestamps for synchronizing content

Definitions

  • the present invention relates to the field of multimedia technologies, and in particular, to a method and apparatus for recording an audio and video synchronization time stamp.
  • the main object of the present invention is to provide a method and apparatus for recording audio and video synchronization time stamps, which avoids the problem that recorded audio data and video data are not synchronized during playback.
  • the invention provides a method for recording audio and video synchronization time stamps, comprising the steps of:
  • the length a of the audio data and the frame rate b of the video data are respectively enlarged by n times, and the n is a preset magnification;
  • the video data and audio data that are time-synchronized are obtained by encoding, decoding, and decoding the video data and the audio data according to a new time stamp.
  • the step of encoding, decoding, and synchronizing the video data and the audio data according to the new time stamp further comprises:
  • the step of receiving and storing the audio data collected by the audio collection device further includes:
  • the video capture device When the video capture device is currently connected, the video capture device is controlled to collect the video data.
  • the invention also provides a method for recording an audio and video synchronization time stamp, comprising the steps of:
  • the video data and audio data that are time-synchronized are obtained by encoding, decoding, and decoding the video data and the audio data according to a new time stamp.
  • the length a of the audio data and the frame rate b of the video data are respectively enlarged by n times, and the n is a preset magnification;
  • the step of encoding, decoding, and synchronizing the video data and the audio data according to the new time stamp further comprises:
  • the step of collecting video data and audio data comprises:
  • the step of receiving and storing the audio data collected by the audio collection device further includes:
  • the video capture device When the video capture device is currently connected, the video capture device is controlled to collect the video data.
  • the invention also provides an apparatus for recording an audio and video synchronization time stamp, comprising:
  • An acquisition module for collecting video data and audio data An acquisition module for collecting video data and audio data
  • An acquiring module configured to acquire a length a of the audio data, a frame rate b of the video data, and a preset audio sampling rate h;
  • a codec module configured to obtain the time-synchronized video data and audio data according to a new timestamp encoding, decoding the video data and audio data.
  • the invention recalculates the new timestamp according to the audio length, the audio sampling rate and the video frame rate, and encodes and decodes the audio and video data according to the obtained new timestamp, so that the encoded and decoded audio data and the video data are time synchronized.
  • the smart device plays back the audio and video files, the screen and the sound are played synchronously, which effectively avoids the screen and the sound being out of sync during playback due to recording interference.
  • FIG. 1 is a flowchart of a first embodiment of a method for recording an audio and video synchronization time stamp according to the present invention
  • FIG. 2 is a flowchart of a second embodiment of a method for recording an audio and video synchronization time stamp according to the present invention
  • FIG. 3 is a flowchart of a third embodiment of a method for recording an audio and video synchronization time stamp according to the present invention.
  • FIG. 4 is a flowchart of a fourth embodiment of a method for recording an audio and video synchronization time stamp according to the present invention.
  • FIG. 5 is a flowchart of a fifth embodiment of a method for recording an audio and video synchronization time stamp according to the present invention.
  • FIG. 6 is a schematic block diagram of a first embodiment of an apparatus for recording an audio and video synchronization time stamp according to the present invention
  • FIG. 7 is a schematic block diagram of a second embodiment of an apparatus for recording an audio and video synchronization time stamp according to the present invention.
  • FIG. 8 is a schematic block diagram of a third embodiment of an apparatus for recording an audio and video synchronization time stamp according to the present invention.
  • FIG. 1 is a flowchart of a first embodiment of a method for recording an audio and video synchronization time stamp according to the present invention.
  • the method for recording an audio and video synchronization time stamp mentioned in this embodiment includes:
  • Step S10 collecting video data and audio data
  • the smart device of this embodiment may include a television, a mobile phone, a computer, and the like.
  • the smart device can be connected to a video capture device, such as a camera, to capture video data through the camera.
  • the smart device can also be connected to an audio capture device, such as a microphone, to capture audio data through the microphone.
  • the smart device can also connect other devices with audio capture function, and transmit audio data to the smart device after collecting audio through other devices.
  • the smart device is a television, the other device is a mobile phone, and the mobile phone and the television are connected through a wireless network. After the mobile phone collects audio data through the microphone, the audio data is sent to the television through the wireless network.
  • Step S20 obtaining the length a of the audio data, the frame rate b of the video data, and the preset audio sampling rate h;
  • the smart device can count the frame rate of the current video data according to the resolution of the video capture device, calculate the length of the collected audio data, and obtain a preset audio sample rate from the memory.
  • a new timestamp T a/[b/(a/h)] according to the adaptive timestamp algorithm, where a is the length of the audio data, b is the frame rate of the video data, and h is the preset audio sampling rate.
  • b can be rounded to an integer, eliminating the number after the decimal point.
  • the value after the decimal point of b can also be retained, so that the obtained time stamp is more accurate.
  • Step S40 encoding and decoding the video data and the audio data according to the new time stamp, and obtaining time-synchronized video data and audio data.
  • the obtained new time stamp is input to the codec module, so that the codec module encodes and decodes the video data and the audio data according to the new time stamp, and finally obtains time-synchronized video data and audio data.
  • the smart device plays back the audio and video files, the picture is synchronized with the sound.
  • a new timestamp is recalculated according to the audio length, the audio sampling rate, and the video frame rate, and the audio and video data is encoded and decoded according to the obtained new timestamp, so that the encoded and decoded audio data and the video data are time synchronized.
  • the smart device plays back the audio and video files, the picture and the sound are played synchronously, which effectively avoids the picture and sound being out of sync during playback due to recording interference.
  • FIG. 2 is a flowchart of a second embodiment of a method for recording an audio and video synchronization time stamp according to the present invention.
  • This embodiment includes the steps of the embodiment shown in FIG. 1, wherein step S30 includes:
  • Step S31 respectively, the length a of the audio data and the frame rate b of the video data are enlarged by n times, where n is a preset magnification;
  • Step S32 dividing the length of the amplified audio data by the audio sampling rate h, to obtain an audio length an/h of each Hertz;
  • Step S33 dividing the frame rate of the amplified video data by the audio length an/h of each Hertz, and obtaining the duration bn/(an/h) of each data storage bit;
  • the length a of the audio data is also enlarged by n times, so that the value in the calculation process is further reduced by n times after being enlarged by n times.
  • the length of the amplified audio is divided by the audio sampling rate to obtain the audio length per unit hertz; and the amplified video frame rate is divided by the audio length per hertz to obtain the duration of each data storage bit. That is, the length of each bit in the memory in which the audio data is stored.
  • the audio data is an analog signal at the time of acquisition, and after being sampled by the ADC, the analog waveform becomes a discrete digital signal, and the number of discrete points is corresponding to the audio data.
  • the number of data storage bits, the number of sampling points of the audio data sampled in 1s is two, and the length of each storage bit is 0.5 s; then the audio length is divided by the length of each data storage bit to obtain a new one. Timestamp.
  • the frame rate b is enlarged by n times, so that the obtained timestamp is more accurate, and the audio and video data is encoded and decoded according to the obtained timestamp, so that the encoded and decoded audio data and video data time are obtained. Synchronization effectively prevents the picture and sound from being out of sync during playback due to recording interference.
  • FIG. 3 is a flowchart of a third embodiment of a method for recording an audio and video synchronization time stamp according to the present invention. This embodiment includes the steps of the embodiment shown in FIG. 1. Before step S40, the method further includes:
  • Step S51 it is determined whether the number of data storage bits corresponding to the audio data is greater than the value of the new timestamp; if yes, step S52 is performed; if not, step S53 is performed;
  • Step S52 it is determined that the new timestamp is valid, and step S40 is performed;
  • step S53 it is determined that the new time stamp is invalid.
  • the audio data collected by the audio acquisition device is an analog signal. After sampling by the ADC, the analog waveform becomes a discrete digital signal, and the number of discrete sampling points, that is, the number of data storage bits. Since the number of audio data storage is the number of ADC analog-to-digital conversions, the number of ADC analog-to-digital conversions must be greater than the number of conversions. Therefore, if the number of storages is less than or equal to the new timestamp, Then the timestamp is invalid.
  • the timestamp is invalid, and a prompt window may pop up prompting the user to re-record.
  • a length threshold or a time threshold may be set. After the collected data reaches the length threshold or the time threshold, the time stamp is calculated according to the collected partial data, and the current calculation is determined. Whether the timestamp is valid. If it is invalid, it stops the subsequent data collection and prompts the user to re-record. In this embodiment, the validity of the timestamp is determined, and the problem that the played sound and the picture are still out of synchronization caused by invalid timestamp coding and decoding of the audio and video data is avoided.
  • FIG. 4 is a flowchart of a fourth embodiment of a method for recording an audio and video synchronization time stamp according to the present invention.
  • This embodiment includes the steps of the embodiment shown in FIG. 1, wherein step S10 includes:
  • Step S11 receiving and storing audio data collected by the audio collection device
  • Step S12 it is determined whether the number of storage bits corresponding to the audio data is greater than a threshold; if yes, step S13 is performed; if not, step S14 is performed;
  • Step S13 determining that the audio data is valid, receiving and storing the video data collected by the video capture device, and performing step S20;
  • step S14 it is determined that the audio data is invalid.
  • the audio data when the video data is recorded, the audio data may not be collected due to the interruption of the connection of the audio collection device, so the validity of the audio data needs to be judged.
  • the system acquires the number of stored bits in the memory in which the audio data is stored, and can also be understood as the size of the amount of audio data. When the number of stored bits is greater than the threshold, for example, the threshold is 10, when the number of stored bits is greater than 10, it is determined that enough audio data has been collected, and the audio data is valid. Otherwise, the amount of audio data collected is small. The audio data may not be collected due to the interruption of the connection of the audio collection device.
  • the user may be prompted to check whether the audio collection device is connected and re-recorded.
  • the validity of the audio data is judged to avoid the problem that the audio data cannot be collected due to the interruption of the connection of the audio collection device.
  • FIG. 5 is a flowchart of a fifth embodiment of a method for recording an audio and video synchronization time stamp according to the present invention.
  • This embodiment includes the steps of the embodiment shown in FIG. 4, and before step S11, the method further includes:
  • Step S15 receiving an audio and video recording request
  • Step S16 detecting whether the video capture device is currently connected
  • step S17 when it is detected that the current video capture device is accessed, the video capture device is controlled to collect video data.
  • the user can click on the control of recording audio and video on the smart device to generate an audio and video recording request.
  • the user opens the MTV application, selects the MTV song that he likes, enters the recording interface of the self-singing self-play, and starts singing.
  • the system detects the level of the USB interface. When the hardware level of the USB interface is high, it indicates that the device is connected to the USB interface.
  • the system identifies the device connected to the USB and determines whether it is a video capture device, for example, whether there is a camera connection. USB. If the currently connected USB device is a video capture device, the video capture device is controlled to collect video data.
  • a prompt box is displayed to prompt the user to check whether the video collection device is connected and re-recorded.
  • the video capture device is determined to be accessed, and the problem that the video data cannot be collected due to the video capture device not being accessed is avoided.
  • FIG. 6 is a schematic block diagram of a first embodiment of an apparatus for recording an audio and video synchronization time stamp according to the present invention.
  • the device for recording audio and video synchronization time stamp mentioned in this embodiment includes:
  • the collecting module 10 is configured to collect video data and audio data
  • the obtaining module 20 is configured to obtain a length a of the audio data, a frame rate b of the video data, and a preset audio sampling rate h;
  • the codec module 40 is configured to obtain time-synchronized video data and audio data according to a new time stamp encoding, decoding video data and audio data.
  • the smart device of this embodiment may include a television, a mobile phone, a computer, and the like.
  • the smart device can be connected to a video capture device, such as a camera, to capture video data through the camera.
  • the smart device can also be connected to an audio capture device, such as a microphone, to capture audio data through the microphone.
  • the smart device can also connect other devices with audio capture function, and transmit audio data to the smart device after collecting audio through other devices.
  • the smart device is a television, the other device is a mobile phone, and the mobile phone and the television are connected through a wireless network. After the mobile phone collects audio data through the microphone, the audio data is sent to the television through the wireless network.
  • the smart device can count the frame rate of the current video data according to the resolution of the video capture device, calculate the length of the collected audio data, and obtain a preset audio sample rate from the memory.
  • a is the length of the audio data
  • b is the frame rate of the video data
  • h is the preset audio sampling rate.
  • b can be rounded to an integer, eliminating the number after the decimal point.
  • the value after the decimal point of b can also be retained, so that the obtained time stamp is more accurate.
  • the obtained new time stamp is input to the codec module, so that the codec module encodes and decodes the video data and the audio data according to the new time stamp, and finally obtains time-synchronized video data and audio data.
  • the smart device plays back the audio and video files, the picture is synchronized with the sound.
  • a new timestamp is recalculated according to the audio length, the audio sampling rate, and the video frame rate, and the audio and video data is encoded and decoded according to the obtained new timestamp, so that the encoded and decoded audio data and the video data are time synchronized.
  • the smart device plays back the audio and video files, the picture and the sound are played synchronously, which effectively avoids the picture and sound being out of sync during playback due to recording interference.
  • calculation module 30 is further configured to:
  • the length a of the audio data is also enlarged by n times, so that the value in the calculation process is further reduced by n times after being enlarged by n times.
  • the length of the amplified audio is divided by the audio sampling rate to obtain the audio length per unit hertz; and the amplified video frame rate is divided by the audio length per hertz to obtain the duration of each data storage bit. That is, the length of each bit in the memory in which the audio data is stored.
  • the audio data is an analog signal at the time of acquisition, and after being sampled by the ADC, the analog waveform becomes a discrete digital signal, and the number of discrete points is corresponding to the audio data.
  • the number of data storage bits, the number of sampling points of the audio data sampled in 1s is two, and the length of each storage bit is 0.5 s; then the audio length is divided by the length of each data storage bit to obtain a new one. Timestamp.
  • the frame rate b is enlarged by n times, so that the obtained timestamp is more accurate, and the audio and video data is encoded and decoded according to the obtained timestamp, so that the encoded and decoded audio data and video data time are obtained. Synchronization effectively prevents the picture and sound from being out of sync during playback due to recording interference.
  • FIG. 7 is a schematic block diagram of a second embodiment of an apparatus for recording an audio and video synchronization time stamp according to the present invention.
  • the embodiment includes the module of the embodiment shown in FIG. 6, and further includes a determining module 50, configured to:
  • the audio data collected by the audio acquisition device is an analog signal. After sampling by the ADC, the analog waveform becomes a discrete digital signal, and the number of discrete sampling points, that is, the number of data storage bits. Since the number of audio data storage is the number of ADC analog-to-digital conversions, the number of ADC analog-to-digital conversions must be greater than the number of conversions. Therefore, if the number of storages is less than or equal to the new timestamp, Then the timestamp is invalid.
  • the timestamp is invalid, and a prompt window may pop up prompting the user to re-record.
  • a length threshold or a time threshold may be set. After the collected data reaches the length threshold or the time threshold, the time stamp is calculated according to the collected partial data, and the current calculation is determined. Whether the timestamp is valid. If it is invalid, it stops the subsequent data collection and prompts the user to re-record. In this embodiment, the validity of the timestamp is determined, and the problem that the played sound and the picture are still out of synchronization caused by invalid timestamp coding and decoding of the audio and video data is avoided.
  • the collecting module 10 is further configured to receive and store the audio data collected by the audio collecting device; when the determining module 50 determines that the audio data is valid, receive and store the video data collected by the video collecting device;
  • the determining module 50 is further configured to determine whether the number of storage bits corresponding to the audio data is greater than a threshold; if yes, determine that the audio data is valid; if not, determine that the audio data is invalid.
  • the audio data when the video data is recorded, the audio data may not be collected due to the interruption of the connection of the audio collection device, so the validity of the audio data needs to be judged.
  • the system acquires the number of stored bits in the memory in which the audio data is stored, and can also be understood as the size of the amount of audio data. When the number of stored bits is greater than the threshold, for example, the threshold is 10, when the number of stored bits is greater than 10, it is determined that enough audio data has been collected, and the audio data is valid. Otherwise, the amount of audio data collected is small. The audio data may not be collected due to the interruption of the connection of the audio collection device.
  • the user may be prompted to check whether the audio collection device is connected and re-recorded.
  • the validity of the audio data is judged to avoid the problem that the audio data cannot be collected due to the interruption of the connection of the audio collection device.
  • FIG. 8 is a schematic block diagram of a third embodiment of an apparatus for recording an audio and video synchronization time stamp according to the present invention.
  • the embodiment includes the module of the embodiment shown in FIG. 7, and further includes an instruction receiving module 60 and a detecting module 70;
  • the instruction receiving module 60 is configured to receive an audio and video recording request
  • the detecting module 70 is configured to detect whether a video capturing device is currently connected.
  • the collecting module 10 is further configured to control the video collecting device to collect video data when the detecting module 70 detects that the currently existing video capturing device is accessed.
  • the user can click on the control of recording audio and video on the smart device to generate an audio and video recording request.
  • the user opens the MTV application, selects the MTV song that he likes, enters the recording interface of the self-singing self-play, and starts singing.
  • the system detects the level of the USB interface. When the hardware level of the USB interface is high, it indicates that the device is connected to the USB interface.
  • the system identifies the device connected to the USB and determines whether it is a video capture device, for example, whether there is a camera connection. USB. If the currently connected USB device is a video capture device, the video capture device is controlled to collect video data.
  • a prompt box is displayed to prompt the user to check whether the video collection device is connected and re-recorded.
  • the video capture device is determined to be accessed, and the problem that the video data cannot be collected due to the video capture device not being accessed is avoided.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Computer Security & Cryptography (AREA)

Abstract

L'invention concerne un procédé d'enregistrement d'une estampille temporelle de synchronisation audio et vidéo. Le procédé comprend les étapes consistant à : collecter des données vidéo et des données audio ; obtenir la longueur a des données audio, la fréquence de trame b des données vidéo et un taux d'échantillonnage audio prédéfini h ; d'après la longueur a des données audio, la fréquence de trame b des données vidéo et le taux d'échantillonnage audio prédéfini h, calculer une nouvelle estampille temporelle T, où T=a/[b/(a/h)] ; d'après la nouvelle estampille temporelle, encoder et décoder les données vidéo et les données audio afin d'obtenir les données vidéo et les données audio qui sont synchrones dans le temps. La présente invention concerne également un appareil d'enregistrement d'une estampille temporelle de synchronisation audio et vidéo. Selon la présente invention, une nouvelle estampille temporelle est recalculée d'après la longueur audio, le taux d'échantillonnage audio et la fréquence de trame vidéo, et les données audio et vidéo sont encodées et décodées d'après la nouvelle estampille temporelle. Les données audio et vidéo encodées ou décodées sont synchrones dans le temps et le problème lié au fait qu'une image et un son ne sont pas synchronisés durant la lecture, à cause d'un enregistrement brouillé, est effectivement résolu.
PCT/CN2016/084387 2015-07-06 2016-06-01 Procédé et appareil d'enregistrement d'estampille temporelle de synchronisation audio et vidéo Ceased WO2017005066A1 (fr)

Applications Claiming Priority (2)

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CN201510392437.9A CN105049917B (zh) 2015-07-06 2015-07-06 录制音视频同步时间戳的方法和装置
CN201510392437.9 2015-07-06

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CN113596550A (zh) * 2021-08-31 2021-11-02 安徽创变信息科技有限公司 一种音视频同步控制方法及装置
CN114390314A (zh) * 2021-12-30 2022-04-22 咪咕文化科技有限公司 可变帧率音视频处理方法、设备及存储介质

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CN105049917B (zh) * 2015-07-06 2018-12-07 深圳Tcl数字技术有限公司 录制音视频同步时间戳的方法和装置
CN106060443A (zh) * 2016-07-13 2016-10-26 福州瑞芯微电子股份有限公司 一种基于安卓系统的视频录制方法和装置
CN109600563B (zh) * 2018-08-01 2020-05-15 北京微播视界科技有限公司 用于确定时间戳的方法和装置
CN109600665B (zh) * 2018-08-01 2020-06-19 北京微播视界科技有限公司 用于处理数据的方法和装置
CN109600564B (zh) * 2018-08-01 2020-06-02 北京微播视界科技有限公司 用于确定时间戳的方法和装置
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