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94results about How to "Guaranteed playback effect" patented technology

Audio and video network playing method and device and electronic device

The invention discloses an audio and video network playing method and device and an electronic device. The method comprises the steps of receiving the audio data and video data; determining an audio playing mode according to the receiving conditions of the audio data and the video data; decoding the audio data and the video data to generate to-be-played audio data and video frames; and playing theto-be-played audio data according to the determined audio playing mode, and synchronously rendering the video frames by adopting an audio and video synchronization mechanism. According to the method,the playing delay caused by accumulation of audio and video data is offset through accelerated playing consumption cache of the audio and video; according to the audio and video playing method and device, the audio and video playing lagging caused by network jitter is avoided through the deceleration playing and the deceleration consumption caching of the audio and video, and the playing effect of the audio and video is guaranteed to the maximum extent while the network jitter resistance is improved and the playing delay is solved.
Owner:ALIBABA GRP HLDG LTD

Dynamic flow control method of streaming media server for ensuring audio/video quality

The invention provides a dynamic flow control method of a streaming media server for ensuring audio/video quality, which comprises the following steps of: (1), dividing a sending stream document into a group of slices and establishing index information for the slices before the sending stream document is played; (2), figuring out an average code rate according to the index information, and recording or setting a group boundary, wherein all frames in a frame group are sent with reference to the average code rate; (3), sending a transport stream packet, and recording to the length of the maximum packet, and obtaining the time interval of the maximum packet by dividing the length of the maximum packet by the average code rate; (4) initially playing one packet, determining a relative time forthe next packet to be sent according to the time interval of the maximum packet, calculating an absolute time point for the next packet to be sent, and judging whether the current time exceeds the relative time; (5), reaching the end of a frame to complete the sending of one packet; and (6) recalculating the average code rate and entering the next circulation when a played frame reaches the groupboundary. When the method is adopted, the problem of packet loss can be solved, the impact on a router can be reduced, the play speed and play effect can be ensured, and the play quality can be improved.
Owner:FENGHUO COMM SCI & TECH CO LTD

Digital film projection device

The invention discloses a digital film projection device. The digital film projection device comprises a base. The top of the base is rotationally connected with a device box through a stand column. One side of the stand column is fixedly connected with a fixed block. The fixed block is slidably provided with an inserting rod in an inserted mode. A plurality of inserting grooves corresponding to the inserting rod are formed in the top of the base in a surrounding mode. A fixed rod is fixedly connected with the end, away from the base, of the inserting rod. The end, away from the inserting rod,of the fixed rod is connected with the fixed block through a telescopic rod. A first spring is arranged on the telescopic rod in a sleeving mode. The two ends of the first spring are fixedly connected with the fixed rod and the fixed block correspondingly. The device box is internally and rotationally connected with a threaded rod. The threaded rod is fixedly connected with a first gear in a sleeved mode. The device box is internally provided with a second gear meshing with the first gear. According to the digital film projection device, through the arrangement of multiple adjusting mechanisms, the projection device can be adjusted freely according to an actual projection site, so that the playback effect of a digital film is ensured, and the viewing experience of people is enhanced.
Owner:侯翠侠

Bandwidth adapting system of streaming media

The invention relates to a flow media bandwidth adapting system, which comprises flow server, media provider, and mobile device, wherein the flow server comprises server flow protocol module, bandwidth analyzing module, bandwidth selecting module, document analyzing module and media sending module; the mobile device comprises terminal flow protocol module, wireless module, bandwidth detecting module, buffer module and play module; the mobile device via wireless module and bandwidth detecting module timely reports received bandwidth state and media receiving state to the server flow protocol module; the server flow protocol module sends said information to the bandwidth analyzing module to find the media bandwidth and sending speed, to be sent by the media sending module. The invention can automatically adjust the sending speed and code bandwidth of media document via the network state and media receiving state, to improve relative play effect.
Owner:北京科岳中科科技服务有限公司

Video detection method and device, terminal equipment and storage medium

The invention discloses a video detection method and device, terminal equipment and a storage medium. The method comprises the following steps: obtaining audio data and video image data in a to-be-detected video; extracting audio features corresponding to the audio data, and extracting image features corresponding to the video image data; obtaining original audio features corresponding to the audio data and original image features corresponding to the video image data, wherein the original audio features and the original image features are pre-extracted audio features and image features of theto-be-detected video before the to-be-detected video is sent to the terminal device; respectively comparing the audio features with the original audio features, and comparing the image features withthe original image features; According to the first comparison result corresponding to the audio feature and the second comparison result corresponding to the image feature, determining a synchronization result of the audio data and the video image data in the to-be-detected video, the synchronization result comprising synchronization or non-synchronization of the audio data and the video image data. According to the invention, audio-video synchronous detection of the video can be realized.
Owner:SHENZHEN ZHUIYI TECH CO LTD

Media data buffering method, media data buffering device and intelligent television

The invention provides a media data buffering method, a media data buffering device and an intelligent television. The media data buffering method of the present invention includes obtaining first playing time information and second playing time information, the first playing time information is used to indicate the playing time point corresponding to the currently decoded media data, and the second playing time information It is used to indicate the playback time point corresponding to the media data that has just entered the data buffer; obtain the playable time of the media data buffered in the data buffer according to the first playback time information and the second playback time information; Control the media playing and buffering process according to the playable time. The invention can perform media buffering and playing according to the playable time of the media data buffered in the data buffer.
Owner:HISENSE BROADBAND MULTIMEDIA TECH

Video coding stream control method facing network live broadcast

The invention discloses a video coding stream control method facing network live broadcast. The video coding stream control method includes the steps that parameters are set at a broadcast end; a time length for receiving video data of an initial buffering zone of the broadcast end is preset to be M, and the lowest receiving bandwidth of the broadcast end is preset to be W; initial coding is performed; after live broadcast coding is started, an analog buffering zone is set according to the preset M and the preset W; coding is performed, wherein in the coding process, the data size of a frame undergoing coding and the data size of a frame to be coded are periodically predicated; the state of a video sequence in the analog buffering zone is calculated, a quantization coefficient is adjusted so that the data volume of the video sequence in the analog buffering zone cannot be empty, and subsequent coding is continuously performed; coding data are distributed; when the coding step is executed, the coding data are directly or indirectly distributed to the broadcast end at the same time; video playing is performed; a decoder is arranged at the broadcast end, live broadcast begins to be received at any time point, when the volume of the received data reaches the time length M, a video starts to be played, and meanwhile a bandwidth receiving live broadcast streams and arranged at the broadcast end is no lower than W.
Owner:POWERINFO

Method for encoding and decoding video, system and video monitoring system

The invention discloses a method for encoding and decoding a video, a system and a video monitoring system. The method comprises the following steps: decomposing a continuous video into at least one frame segment by an encoding end, and extracting data frames from the frame segment to form a sub-code stream group according to a time sequence; encoding a first frame of the sub-code stream group in an I-frame mode; forming a code stream group by using the encoded sub-code stream group according to the time sequence; and acquiring the code stream group by an decoding end, and sequentially decoding the data frames contained in the code stream group. The method for encoding and decoding the video, the system and the video monitoring system are suitable for various network environments and equipment characteristics, and significantly improve the video playing effect.
Owner:ZTE CORP

Method for hiding transmission error of eight-viewpoint free three-dimensional video

The invention relates to a method for hiding a transmission error of eight-viewpoint free three-dimensional video, and the method provided by the invention comprises: informing an adjacent terminal of the uploading capability of each terminal at a time interval by each terminal; acquiring the adjacent terminal which owns a requested resource by a video requesting terminal through an information list of a server and acquiring the information of the terminal with high uploading capability; according to the uploading capability, and respectively receiving each viewpoint data and redundancy key data; using the terminal with high uploading capability to transmit more viewpoint data and redundancy key data; at a data sending end, performing the information source compression coding and channel error correction coding on the viewpoint data and redundancy key data which are to be sent, and then transmitting; and at the video requesting terminal, verifying the video data through the redundancy key data and hiding the error. By using the method to transmit the three-dimensional video, the use ratio of bandwidth can be efficiently increased and the deletion of video stereoscopic sense caused by abrupt error codes can be efficiently reduced.
Owner:TIANJIN UNIV

Screen advertisement playing method and system

PendingCN114501081APrevent poor ad deliveryEasy to track and querySelective content distributionEngineeringMultimedia
The invention relates to a screen advertisement playing method and system. The method comprises the following steps: dividing advertisements into advertisement types according to priorities and storing the advertisement types; setting an advertisement playing period and a playing time unit, and obtaining a preset advertisement playing amount in an advertisement playing time period; in the first advertisement playing period, playing different types of advertisements according to the playing weight, and performing periodic playing; the advertisement playing condition of the advertisement screen end is reported in real time, and an advertisement playing report is automatically generated; and adjusting to play different types of advertisements according to the advertisement playing report and the preset advertisement playing amount. According to the invention, the problem that the playing times of different advertisement materials cannot be accurately measured and calculated and the playing amount cannot be flexibly adjusted can be effectively solved, the poor putting effect caused by dense playing time of a single advertisement is prevented, meanwhile, the advertisement playing condition of the screen end can be tracked, and timely remedy is carried out when an abnormality occurs.
Owner:ZHEJIANG NEW ZAILING TECH CO LTD

Noise reduction earphone and method for controlling on/off of noise reduction circuit

The invention discloses a noise reduction earphone and a method for controlling the on / off of a noise reduction circuit. The earphone comprises a main case, a front case and the noise reduction circuit, wherein the main case, the front case and the noise reduction circuit form a main part of the earphone. The interior of an internal space S is provided with an internal partitioning wall, and the internal partitioning wall enables the internal space S to be divided into a first space S1 and a second space S2, which are independent of each other. The earphone is characterized in that the interior of the first space S1 is provided with a conversion unit which enables an audio input signal to be converted into a sound signal; the interior of the second space S2 is provided with a microphone for receiving external environment noise; a wall, corresponding to the second space S2, of the main case is provided with an adjustment hole; the adjustment hole is provided with a door which can achieve the closing of the adjustment hole; the noise reduction circuit is in a short-circuit state when the door of the adjustment hole is completely closed, thereby enabling an audio input signal not to pass through the noise reduction circuit, but to be directly fed back to the earphone.
Owner:华峰君

High-definition matrix capable of realizing remote synchronous transmission of multichannel high-definition videos

The invention discloses a high-definition matrix capable of realizing remote synchronous transmission of multichannel high-definition videos. The high-definition matrix comprises a master control board which is connected with at least two high-definition video encoding-decoding boards; the master control board and the high-definition video encoding-decoding boards are powered by a power module; when video acquisition is performed, the at least two high-definition video encoding-decoding boards collect, compress and code audio data, video data or the audio data and the video data at the same time by an audio-video acquisition interface; and then, the compressed and coded data are transmitted to the master control board; the master control board is provided with an independent network interface; and the data are multiplexed by the master control board and repacked to send out by the independent network interface. As a mode based on an IP (Internet Protocol) network is adopted for accomplishing remote transmission of the high-definition videos, the remote transmission of high-definition video signals can be ensured without distance limitation, and the definition of the video signals and the playing effect can be ensured simultaneously; and moreover, the cost can be greatly reduced and revolutionary breakthrough can be provided in the technology.
Owner:SZ REACH TECH

Audio playing mode switching method and device and head-mounted equipment

The invention discloses an audio playing mode switching method and device and head-mounted equipment. The method is applied to the head-mounted equipment with earphones and loudspeakers. The method comprises the following steps of: respectively detecting the wearing states of the earphones on the left side and the right side of the head-mounted equipment; when it is detected that the earphone on one side or the earphones on the left side and the right side are worn, controlling an audio channel(s) on the same side as the worn earphone(s) to be switched into an earphone playing mode; and when it is detected that the earphone on one side or the earphones on the left side and the right side are taken off, controlling the audio channel(s) on the same side as the taken-off earphone(s) to be switched into a loudspeaker playing mode. According to the audio playing mode switching method provided by the embodiment of the invention, the audio playing mode can be automatically switched accordingto the wearing states of the earphones, the complex operation of manually switching the audio channels by a user is omitted, the continuity of sound output is maintained, meanwhile, the use requirements of users in different application scenes can also be met, and the user experience is greatly improved.
Owner:GOERTEK OPTICAL TECH CO LTD

Vehicle-mounted player

The embodiment of the invention discloses a vehicle-mounted player, and relates to the technical field of navigation. The volume of the vehicle-mounted player can be effectively adjusted under the condition that no additional device is added, and the playing effect of the vehicle-mounted player is improved, thereby improving the listening experience of a user in a vehicle. The specific scheme is that a microphone is used for detecting the current environmental noise in the vehicle; a storage module is used for storing the initial environmental noise, and storing the initial play volume set bythe user; a calculation module is used for calculating the play volume Y under the current environmental noise through employing Y=delta(step)*K+B or Y=(A-A0)*K+B; an adjustment module is used for adjusting the volume of the vehicle-mounted player to the play volume calculated by the calculation module.
Owner:FAURECIA CLARION ELECTRONICS (XIAMEN) CO LTD

Accurate advertisement putting method based on vehicle information identification

The invention discloses a precise advertisement putting method based on vehicle information identification, which comprises the following steps that: when a vehicle passes through a camera shooting area, a camera performs front-end identification to identify vehicle information, the information specifically includes but is not limited to information such as license plates, license plate types, vehicle types, colors, brand models, values, vehicle personalized features and driver behaviors of vehicles; the camera transmits recognized information to the control communication mainboard, the control communication mainboard interacts with a cloud end, and an advertisement which is most suitable for the user is matched through a data matching algorithm; when the cloud side queries a playing demand, a playing instruction is issued to the control communication mainboard; after the communication mainboard is controlled to obtain the playing instruction, the display end plays the playing instruction; after playing is finished, the camera continues to be in the standby state to wait for the vehicle to enter the shooting area again. According to the method, the advertisement playing accuracy is improved, different advertisements represent different commodities and are suitable for different crowds, and the scheme aims at achieving the purpose that the advertisements are played in front of the specific crowds, and relatively accurate playing of offline advertisements is achieved.
Owner:苏州天佑智能科技有限公司

Back projection image express-delivery car advertisement player

InactiveCN106971681AAvoid leaningWith elastic support functionMobile visual advertisingCamera lensButt joint
The invention discloses a back projection image express-delivery car advertisement player which comprises an express-delivery car, a back projection screen, a soft projection camera bellows and a projector, wherein the back projection screen is installed on the top of the express-delivery car by a base and a frame; multiple supporting mechanisms are disposed between the base and the top of the express-delivery car; a front end large hole of the soft projection camera bellows is fixed around the frame and is butt joined to the back projection screen; the rear end projection hole is fixed on a support equipped with the projector and is butt jointed with a camera lens of the projector; rotation shafts are installed on two sides of the bottom edge of the frame equipped with the back projection screen; shaft sleeves on two sides of the base are collected by the rotation shafts on the two sides; electric telescopic push rods are installed on two sides of the back face of the frame equipped with the back projection screen; the support equipped with the projector is fixed on a bracket which can be stretched, contracted and moved; and the bracket is firmly connected to the base. The device disclosed by the invention has the advantages that the structure is table; anti-vibration effects are good; advertisement playing can be controlled conveniently; and generalization is easy.
Owner:TOP TRI WUXI DESIGN CONSULTANTS

Video polyphonic ringtone processing method and device, and computer readable storage medium

The invention discloses a video polyphonic ringtone processing method and device and a computer readable storage medium, relates to the technical field of polyphonic ringtones, and aims to solve the problem that the playing effect of a video polyphonic ringtone in a calling terminal cannot be ensured in the prior art. The method is applied to a polyphonic ringtone platform, and comprises the stepsof obtaining polyphonic ringtone files in multiple playing forms corresponding to video content under the condition of receiving the video content selected or uploaded by a user; under the conditionthat a calling request of a calling terminal is received, obtaining information, carried in the calling request, of the calling terminal, wherein the information of the calling terminal comprises at least one of equipment type information and network signal information; and according to the information of the calling terminal, determining a target polyphonic ringtone file matched with the information of the calling terminal from the polyphonic ringtone files in multiple playing forms, and playing the target polyphonic ringtone file to the calling terminal. According to the embodiment of the invention, the playing effect of the video polyphonic ringtone on the calling terminal can be ensured.
Owner:MIGU CO LTD +1
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