41results about How to "Guaranteed smooth playback" patented technology

The invention discloses a buffering method and device of video data, and relates to the technical field of information. First in the process of playing video data, video data to be played are cached in a video buffering area with a preset buffering length; then whether playing status information of the current video data satisfies a preset condition is detected according to a preset time interval; and the preset buffering length corresponding to the video buffering area is adjusted according to a detection result. By utilization of the abovementioned scheme, when network conditions are not ideal, the occurrence of a phenomenon of unsmooth playing of a live video is reduced, and when the network conditions are relatively good, the real-time performance of playing of the live video can be improved.

The invention discloses an H264-based real-time mobile video service control method, which belongs to the field of real-time streaming media and mobile network transmission. The method includes the following steps: a real-time video is coded according to H264, a low bit rate and low resolution, the coded H264 video data are then packed, the processed video data is transmitted to a mobile terminal according to the real-time stream transmission protocol, a three-phase bit rate control method is adopted, the status of a mobile network channel is detected and fed back by a transmission control mechanism in the process of transmission, and according to feedback information, bit rate control is carried out at the coding end. Finally, the transmitted video data is decoded and displayed by the mobile terminal. The method can effectively guarantee the real-time mobile video service quality in a mobile network environment.

The invention discloses a video code rate selecting method driven by user experience under an HSPA (High Speed Packet Access) system. The method comprises the following steps: firstly, extracting bottom layer network velocity in the previous segment transmission time interval, and estimating the network velocity when the next segment transmits according to the velocity; then extracting the number of the video frames not played in the current play buffer memory by the current user; finally determining the code rate version of the next requested video according to the network state and the number of the video frames in the buffer zone. Aiming at the video transmission problem in the HSPA system, the method comprehensively considers the factors such as the network state of each user and the play condition of the terminal user, provides a code rate self-adaptive video segment requesting method, and can effectively improve the experience level of the terminal user.

The invention is aimed at providing a method for carrying out segment download equalization on video information. The method can be realized under a single thread, and also can be realized under a plurality of threads. On each thread, before a client establishes download video information, according to a preset link quantity, a download task is established on each link, according to a practical situation of a link of a task which is completed first, a next download task is determined in real time, and under the premise of ensuring the client to carry out flow playing, network load relative equilibrium of a plurality of links are realized so as to achieve a purpose of utilizing a network bandwidth to the largest extent.

The invention relates to a direct-broadcast flow transmission method and apparatus. The method comprises: a current state of a client is obtained; on the basis of the obtained current state of the client, statistics of a ratio of the number of clients in a freezing state to the total number of clients is carried out; when the ratio exceeds a first threshold value, a current code rate of a direct-broadcast flow is obtained; and when the current code rate is higher than a predetermined code rate threshold value, the client is notified to adjust a transmission strategy to improving the transmission capability and enhance a proportion of direct-broadcast flow data obtained by the client from a content distribution network (CDN) server to direct-broadcast flow data obtained by a point-to-point (P2P) data transmission mode. According to embodiments of the invention, the transmission strategy of the client is adjusted based on the direct-broadcast flow code rate and the client state, so that the service and bandwidth resources are saved and the direct broadcasting smoothness is guaranteed.

The invention discloses a video source switching method and a video source switching device. The video source switching method comprises the following steps: a client side detects the code rate of a local currently-played video source and the current network transmission speed; the client side acquires the code rates of playable video sources respectively; when the client side determines that the ratio of the current network transmission speed to the code rate of the currently-played video source reaches a preset threshold, the client side switches the currently-played video source to a video source of which the code rate meets a preset condition. Through adoption of the technical scheme, the ratio of the current network transmission speed to the code rate of the currently-played video source is used as a criterion for judging whether to switch the video source, and according to the code rates of the playable video sources at the client side, the final target video source is selected to play, so that a blind video source switching action is avoided on the basis of ensuring smooth video playing, and further the burden on a system is reduced and the network performance is effectively improved.

The present invention provides a streaming media buffer play method and device and a display device, and relates to the field of the display technology. The streaming media buffer play method and device and the display device are configured to shorten the starting play time as possible while ensuring the smooth playing of the streaming media program. The method comprises: playing a RTP data package, wherein the RTP data package includes a package head and a load; buffering the load buffer to a buffer area and obtaining the number of the data frames included by the unanalyzed load; determining whether the number of the data frames included by the unanalyzed load in the buffer area is larger than or equal to a first threshold or not; and decoding and playing the unanalyzed load in the buffer area if the number of the data frames included by the unanalyzed load in the buffer area is larger than or equal to a first threshold. The streaming media buffer play method and device and the display device are configured to streaming media buffer play.

The embodiment of the invention provides a video service transmission control method and device, so as to improve user experience. The method comprises the steps that a network side device determines the terminal state information of a video service played by a user device, wherein the terminal state information comprises at least one of the play state of the video service, the cache state of the video service and a play reporting event met by the video service; according to the terminal state information, the transmission of the video service is controlled, and through the network side device, the terminal state information of a transmitted video service in video services visited by the user device in the user device is determined; and according to the terminal state information, the user device is controlled to transmit a video service to be transmitted in the video services. The video service characteristic is fully used. A policy for the user device to visit the video services is dynamically adjusted in real time. The video services can be smoothly played to the greatest extent, and the user experience of the video services is improved.

The invention discloses a method and a system for live broadcast of peer-to-peer (P2P) streaming media. The method comprises the following steps that: the state of a data buffer zone of a live streaming media is monitored; when a data safe zone is not fully filled by the data of the data buffer zone, a client node preferably requests the corresponding live broadcast streaming media data to a compensation server; and when the data safe zone is fully filled by the data of the data buffer zone, the client node requests the corresponding live broadcast streaming media data to an upper node according to a mark of the upper node. In the method and the system, the user node selects the nodes with good network transmission attribute according to a node marking strategy to form a node queue so as to meet a data transmission requirement under a high-definition code stream condition; and through a compensation strategy of the safe zone, safety precaution of data buffering capacity is realized, data intelligent functionalized compensation is actualized and P2P high-definition streaming media live broadcast smooth play is realized.

The invention is for uses to realize playing back individualized audio / video files stored. The method includes following steps: (1) using an access server of network hard disk to receive information for requesting playing audio / video files from client end; (2) using the access server of network hard disk to obtain the user information corresponding to the client end from a user data server; based on the user information, copying the audio / video files requested to play from a storage server of network hard disk to a HTTP server; and a file of play list including URL addresses is created on the HTTP server; (3) transferring the file of play list to client end, and calling media player at client end to play audio / video files listed in the list. The invention also discloses network system for implementing online playing audio / video files.

The embodiment of the invention provides a method and apparatus for merging multimedia files. The method comprises the following steps: separately extracting a plurality of original video data and a plurality of original audio data from a plurality of original multimedia files; converting the plurality of original video data into a plurality of feature video data of a specified video parameter; converting the plurality of original audio data into a plurality of feature audio data of a specified audio parameter; merging the plurality of feature video data into target video data; merging the plurality of feature audio data into target audio data; and packaging the target video data and the target audio data into a target multimedia file. The video and audio parameters in the multimedia filesare unified, the compatibility of the multimedia files is improved, the playing smoothness of the merged multimedia files is ensured, and the phenomena of frame skipping and jamming or the like are reduced.

The invention discloses a device and method for reducing the CPU temperature of a video play terminal. The method comprises that the frame frequency of a video played by the video play terminal at present is detected; and under the condition that the frame frequency is lower than a first preset value, the amount of metal operations for the video frame is reduced. According to the technical schemes, the frame frequency of the video can reflect CPU resource or temperature to certain extent, the frame frequency is decreased when the resource is in short supply or the temperature is relatively high, and the video is jammed when being watched. Thus, the amount of metal operations of each frame is adjusted according to the frame frequency of the video, the burden of a CPU is alleviated and the CPU temperature is reduced when the resource of the CPU is in short supply, and it is ensured that the video is played smoothly.

The invention provides a media resource push method, client side and server. According to the method, the server receives a fragmentation request message carrying a push instruction transmitted by theclient side, wherein the push instruction includes a fragmentation push identifier and push strategy indication information; the server determines fragmentation push time corresponding to the fragmentation push identifier according to the push strategy indication information; and the fragment corresponding to the fragmentation push identifier is pushed to the client side according to the push time. The push strategy indication information is added in the push instruction transmitted to the server by the client side and the server can perform fragment pushing according to the push strategy indication information so that smooth playing of the client side can be guaranteed and waste of bandwidth caused by stopping watching of the user can also be prevented.

The invention relates to a live streaming method and device, an electronic device and a storage medium. The method comprises the steps: receiving a live streaming data request instruction of an anchorend sent by an audience end; sending live streaming data to the audience terminal according to the request instruction; determining whether the audience terminal is a target audience terminal or not,wherein the target audience terminal is an audience terminal of which the interaction behavior with the anchor terminal meets a preset condition; when the audience terminal is a target audience terminal, triggering a first live streaming strategy selection instruction; obtaining a first cache length according to the first live streaming strategy selection instruction, wherein the first cache length is less than a preset cache length of the server; and sending the first cache length to the target audience terminal so as to enable the live streaming data cached by the target audience terminal to be played when the live streaming data reaches the first cache length. According to the invention, different live streaming strategies are adopted for different audience terminals, the low-delay requirement and the fluency requirement are both considered, and the watching experience of the user is improved.

The invention discloses an animation display method which is applicable to execute in a mobile terminal. The method comprises the steps of: receiving video streaming from a server side so as to carryout video streaming playing on the mobile terminal; receiving an animation playing instruction pushed by a server, and parsing an animation identifier of a to-be-played animation, which is included inthe instruction; acquiring animation configuration information corresponding to the animation identifier, wherein the animation configuration information comprises an animation resource and an operation code for carrying out operation on the animation resource; and executing the operation code by utilizing an animation playing engine so as to overlay the animation resource on the video streamingto carry out animation display. The invention further discloses a mobile terminal for executing the animation display method.

The invention relates to VR equipment which comprises a VR equipment body, a storage battery, a charging socket, a power supply switch, a power supply plug, power supply sockets, a temperature switch,a refrigeration device and a control circuit, wherein the control circuit, the power supply switch, the charging socket, the first power supply socket, the storage battery and the refrigeration device are arranged in an element box, and are connected through conducting wires; the temperature switch and the other power supply socket are arranged in a head-mounted device casing and are connected through conducting wires; a magnet is arranged at the side end of an air inlet pipe of the head-mounted device casing; the refrigeration device comprises an air hose, an air extracting pump and a semiconductor refrigeration sheet; the air extracting pump and the semiconductor refrigeration sheet are arranged in the element box; a magnet is arranged at the outer side of an air outlet pipe at the sideend of the element box; the air outlet pipe is connected with the air extracting pump; and a magnet is arranged at the outer side end of a connecting pipe arranged at each of the left and right endsof the air hose. The VR equipment has the advantages that in the use process, the temperature in the casing can maintain at a low temperature, so that temperature reduction and heat radiation can be realized on a mobile phone; the smooth playing of mobile phone videos is ensured; the weight of the head-mounted device cannot be increased; and no noise or vibration can be generated.

The invention discloses an intelligent video code rate adjustment and bandwidth allocation method based on deep learning, and the method comprises the steps: constructing a code rate allocation neural network, the input of the code rate allocation neural network is a state vector comprising an available bandwidth normalized value, a user cache video duration normalized value and a user active state, and the output of the code rate allocation neural network is a code rate allocation scheme vector of each user; setting a plurality of user states and available bandwidth scenes to obtain training samples, and training the code rate allocation neural network; and when each decision time slot arrives, obtaining a state vector, inputting the state vector into the trained code rate allocation neural network to obtain a code rate allocation scheme, and determining the bandwidth occupied by each user according to the code rate allocation scheme and the current available bandwidth to complete bandwidth allocation. According to the method, the decoding rate and the bandwidth allocation scheme are quickly solved by utilizing the characteristic of high execution speed of a neural network inference process, and the timeliness and the accuracy are improved.

The invention discloses a traffic local optimization method in an internet video-on-demand system. The method comprises the following steps: a node periodically reports own network status, IP (Internet Protocol) address and play progress and bitmap to a Tracker server; the Tracker server selects nodes at a same area to form a list to be transmitted to the node according to a request of the node; the node selects six nodes with request data blocks by analyzing the bitmap of the node in the peer List, transmits connection requests to the six nodes until the first node responds and then transmits data with the responded node. If the local node is not enough to guarantee smooth play of a streaming media, the node requests P2P (Peer-to-Peer) sharing with a non-local node from the Tracker server. The support of the non-local node is rationally added while traffic localization is guaranteed as much as possible, so that the time delay for receiving a request program by a user in a FLASH P2P video-on-demand system is reduced, the smoothness for video play is improved, and the traffic pressure of a backbone network of an operator is greatly reduced.

The invention discloses a P2P live-broadcasting system and method for reducing coded fragment repetition. The live-broadcasting system comprises an edge server, a source supply node and a play node, wherein the edge server is used for cutting video data into a plurality of data blocks, cutting and coding each data block into a plurality of coded fragments, and dividing the plurality of coded fragments into distributed coded fragments and supplementary coding fragments; the edge server is also used for distributing the distributed coded fragments to the source supply node; the play node is used for acquiring the distributed coded fragments from the source supply node, and sending a supplementary fragment request to the edge server when the number of the distributed coded fragments acquired in a preset time period does not reach an erasure code threshold; and the edge server is also used for sending the supplementary coding fragments to the play node for erasure code compensation when receiving the supplementary fragment request. According to the P2P live-broadcasting system and method disclosed by the invention, the video lagging phenomenon during live-broadcasting can be reduced, and the smooth playback of videos can be guaranteed.

The embodiment of the invention relates to a video data processing method, a server and a video receiving end. The method comprises the following steps: receiving an instruction that the video receiving end requests to acquire video data; acquiring the regional signal intensity when the video receiving end reaches the next region after the preset time; and according to the regional signal intensity, pre-adjusting transmission parameters of video data to be sent, and sending the video data to the video receiving end according to the transmission parameters; after receiving an instruction that the video receiving end requests to obtain video data, obtaining the regional signal intensity when the video receiving end arrives at the next region after the preset time; and adjusting the transmission parameters of the to-be-sent video data in advance according to the region signal intensity of the next region, so that the transmission parameters of the video data can be matched with the regionsignal intensity of the next region, and the video data can be smoothly played on the video receiving end.

The present invention is applicable to the field of picture playback, and provides a picture preloading method and device. When a picture player or an audio and video player plays pictures, it triggers the acquisition of pictures that need to be preloaded; it is judged whether the resolution of the pictures exceeds the preset resolution threshold; if the resolution of the picture exceeds the resolution threshold, the compression factor is calculated according to the picture compression algorithm; the picture is compressed according to the compression factor, and the compressed picture is preloaded; thereby effectively preventing OOM is eliminated, which ensures the smooth playback of pictures and is more user-friendly.

The invention discloses an animation display method, and the method comprises: a terminal receiving video information from a server and an animation playing instruction, and analyzing an animation identification, contained in the instruction, of an animation to be played; drawing a pattern with a set shape according to a drawing function of the terminal; the terminal receiving a gesture interaction instruction of a user and changing the shape of the pattern according to the gesture interaction instruction; caching an operation code of the pattern information in a terminal; judging whether theanimation configuration information corresponding to the animation identifier is locally cached or not; and executing the animation operation code and the pattern operation code by using a playing engine so as to superpose the animation resource and the pattern on the video to perform animation and pattern combined display. According to the invention, when a user watches live broadcast or other similar pictures, the animation / pattern can be played or inserted, so that richer interaction pleasure is brought to the user, the user interaction experience is enriched, and the user experience is greatly improved.

The invention discloses a method and a system for live broadcast of peer-to-peer (P2P) streaming media. The method comprises the following steps that: the state of a data buffer zone of a live streaming media is monitored; when a data safe zone is not fully filled by the data of the data buffer zone, a client node preferably requests the corresponding live broadcast streaming media data to a compensation server; and when the data safe zone is fully filled by the data of the data buffer zone, the client node requests the corresponding live broadcast streaming media data to an upper node according to a mark of the upper node. In the method and the system, the user node selects the nodes with good network transmission attribute according to a node marking strategy to form a node queue so as to meet a data transmission requirement under a high-definition code stream condition; and through a compensation strategy of the safe zone, safety precaution of data buffering capacity is realized, data intelligent functionalized compensation is actualized and P2P high-definition streaming media live broadcast smooth play is realized.

Embodiments of the present invention provide a method and device for controlling video service transmission, which can improve user experience. The method includes: the network side device determines the terminal state information of the video service played by the user equipment, and the terminal state information includes at least the following information One: the playback status of the video service, the cache status of the video service, and the playback reporting event that the video service satisfies; according to the terminal status information, control the transmission of the video service and determine through the network side equipment that the video service accessed by the user equipment has The terminal status information of the transmitted video service in the user equipment, and according to the terminal status information, the user equipment is controlled to transmit the video service that needs to be transmitted in the video service, which can make full use of the characteristics of the video service and dynamically adjust in real time. A policy for the user equipment to access the video service. In this way, the smooth playback of the video service is ensured to the greatest extent, and the user experience of the video service is improved.

This application provides a VR image transmission method, the steps are: after the VR computer sends the first plane image of the movie to the VR helmet, the VR computer obtains the first visible area that the wearer of the VR helmet can see on the first plane image ; Set the second visible area including the first visible area, record the second position of the second visible area on the first plane image, and set the area outside the second visible area in the first plane image as Background area; set the edge of the second visible area as the first edge, and the edge of the high-definition area as the second edge, then the image is set to be gradually blurred from the second edge to the first edge; the first plane image is placed in its image Compression is performed under the condition that the size remains unchanged to obtain a first compressed image; the image in the second visible area is overlaid on the first compressed image at a second position, and combined to form a second composite image. This application makes the picture of the film more optimized, and improves the viewing experience of the user.

Embodiments of the present invention provide a download control method, device, multimedia terminal, and computer storage medium. During the process of downloading a slice source of the current code rate, a real-time download rate is obtained; the download rate is from the slice source. The average download rate during the period of downloading to the current moment; compare the download rate with the download rate limit threshold corresponding to the current code rate, the download rate limit threshold is greater than the smooth playback rate of the fragment source, and the smooth playback rate is The minimum download rate for smoothly playing the fragment source; when the comparison result is greater than the download rate limit threshold, the download is suspended until the download rate is less than or equal to the download rate limit threshold and the download is restarted; through the set download rate limit Speed ​​threshold, which can well limit the download rate of the terminal to download the fragment source. The download rate is not too high, but is close to or equal to the download rate threshold, so as to solve the problem of excessive occupation of broadband resources.

The invention provides a vast-scale buffering policy-based audio / video code stream control method. On the basis of vast-scale buffering data capacity of Internet audio / video transmission and application and other links, stream control parameters are artificially set; a coding system automatically and dynamically regulates code parameters to ensure that an audio / video code stream does not exceed a buffering upper limit of a given and specific transmission bandwidth at any time range, so that smooth and high-quality audio / video files can be displayed under a condition of finite transmission bandwidth. According to the characteristics of the transmission and displaying of an Internet audio / video stream, the method can prevent immanent problems of CBR and VBR stream control, can overcome a defect of ABR stream control that control mechanism is unmatched with the buffering policy, and can eliminate factors affecting code quality in VBV and HRD modes, i.e. undersize stream control particle size, strict overflow control and the like.

The invention is for uses to realize playing back individualized audio / video files stored. The method includes following steps: (1) using an access server of network hard disk to receive information for requesting playing audio / video files from client end; (2) using the access server of network hard disk to obtain the user information corresponding to the client end from a user data server; based on the user information, copying the audio / video files requested to play from a storage server of network hard disk to a HTTP server; and a file of play list including URL addresses is created on the HTTP server; (3) transferring the file of play list to client end, and calling media player at client end to play audio / video files listed in the list. The invention also discloses network system for implementing online playing audio / video files.