47results about How to "Reduce playback lag" patented technology

The embodiment of the invention provides a video data transmission method. The video data transmission method comprises the following steps: determining a lost data packet according to at least two packet loss confirmation mechanisms based on the continuity between the serial number information of a received first UDP data packet and the serial number information of second UDP data packet at the latest in a receiving buffer zone; and sending a corresponding UDP resending request to a sending end according to the determined lost data packet. The invention further provides a corresponding device. By use of the video data transmission method and device provided by the embodiment of the invention, the video data is transmitted based on a UDP protocol, so that the instantaneity of the data transmission, especially the stream media data, is greatly improved. The selective transmission of the data is realized by resending the lost data packet, the risks of seriously jamming the network, disordering and losing the data when the data is resent in mass are lowered, the lagging and delaying in the video playing are reduced, the packet loss management under different network status is enhanced, and the device performance is improved.

The invention relates to a live broadcast data processing method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring live broadcast stream data, and writing the live broadcast stream data into a live broadcast cache region; wherein the live broadcast stream data comprise audio stream data and video stream data, when the cached data volume of thelive broadcast stream data in the live broadcast cache region satisfies a playing adjustment condition, adjusting the initial audio frame rate of the audio stream data in the live broadcast cache region according to the cached data volume to obtain a target audio frame rate, and playing the audio stream data according to the target audio frame rate, and synchronously playing the video stream datacorresponding to the audio stream data of which the audio frame rate is adjusted. By adopting the method, the playing delay of the playing end can be reduced.

The invention provides a video optimization processing method for a remote desktop. The method comprises the steps of registering a coder-decoder corresponding to a video decoding format supported bya video processing unit when initialization of a preset multimedia vide processing tool is started; judging whether the video decoding format corresponding to the registered coder-decoder is matched with a coding format; if yes, calling the video processing unit to decode video frame data; and returning a corresponding file descriptor; and transferring the file descriptor to a processing interfaceof a bitmap hardware acceleration module, thus allowing the bitmap hardware acceleration module to perform image conversion on the decoded video data. The invention also provides a video optimizationprocessing device for the remote desktop. According to the method and device provided by the invention, the technical problem that the video playing experience is poor due to the fact that the embedded platform of an existing ARM-SOC framework uses a software processing mode to decode and perform image conversion is solved.

The invention provides a video coding method and device, electronic equipment and a storage medium, and the method comprises the steps: determining network bandwidth information based on a network bandwidth environment of a video playing terminal; determining decoding computing power information of the video playing terminal; obtaining capacity configuration information of a playing cache pool inthe video playing environment; dynamically adjusting a video playing coding strategy based on the network bandwidth information, the decoding computing power information and the capacity configurationinformation of the playing cache pool, and determining a video coding strategy matched with the playing environment of the target video; and encoding the target video through the determined video encoding strategy, so that the encoding strategy of video playing can be flexibly adjusted by utilizing the network bandwidth information, the decoding computing power information and the capacity configuration information of the playing cache pool. The video playing lag caused by the change of the network environment and the deficiency of the decoding capability of the terminal is reduced, and the use experience of a user is improved.

The invention provides a multimedia playing control method, terminal, sound box device and system, and belongs to the technical field of computers. The method comprises the following steps: the terminal can obtain basic information of the sound box device, establish a connection with the sound box device based on the basic information of the sound box device, then obtain state information of the sound box device from the sound box device, and send a multimedia playing list to the sound box device by using the state information of the sound box device. After receiving the multimedia playing list, the sound box device can determine the multimedia to be played, obtain the multimedia to be played by using a playing link of the multimedia to be played and play the data of the multimedia to be played. By adoption of the multimedia playing control method, terminal, sound box device and system provided by the invention, the multimedia playing delay can be shortened.

Provided is a construction method for a topological structure based on a clustered peer-to-peer network streaming media direct broadcast system. At first, all nodes in the system are clustered at an initial phase; secondly, the topological structure is constructed within clusters after clustering is finished; finally, the topological structure is constructed among the clusters. The method mainly includes two aspects that on one hand, a virtual network is constructed and topological construction is carried out; on the other hand, topological construction of nodes among the clusters in an actual network is carried out. According to the method, transmission of streaming media data blocks in the peer-to-peer network streaming media direct broadcast system can be balanced between the bandwidth and delay, cumulative delay in the networks is reduced, and the maximum broadcast delay of the nodes in the networks can be reduced on the basis of reducing calculated quantity.

The invention discloses a multimedia data processing method and a multimedia data processing device. The method comprises the following steps: acquiring first multimedia data collected in the process of live broadcast through a first client logging in with a first account; comparing the first multimedia data with second multimedia data in cached multimedia data, wherein the second multimedia data is multimedia data collected and cached before the first multimedia data; under the condition that the result of comparison indicates that target multimedia data in the cached multimedia data should be deleted, deleting target multimedia data from the cached multimedia data to get current cached multimedia data; and sending the current cached multimedia data to a second client logging in with a second account so the second client can broadcast the current cached multimedia data in the process of live broadcast, wherein the first account and the second account are associated accounts. The technical problem that broadcast delay is caused by adoption of the existing multimedia processing method is solved.

An embodiment of the invention discloses a method and a device for scheduling data in a P2P (peer-to-peer) stream media system. The method includes the steps: checking a play cache of a child node and judging whether the local play cache has packet loss or not by the child node; transmitting a packet loss request to a parent node with the maximum accumulated bandwidth and packet loss according to recorded one-byte information and recorded bandwidth by the child node if the local play cache has packet loss; transmitting a data packet to the child node according to the packet loss request by the parent node; and repairing the local play cache according to the data packet by the child node. By the aid of the method and the device, consumption of limited network bandwidth resources is reduced, the problems of too much start delay and excessive bandwidth resources due to exchange of mapping tables are solved, network load is reduced, the utilization rate of the network bandwidth resources is further increased, media playing delay is reduced, packet loss rate is decreased, and stream media can be played in a high-quality manner.

Embodiments of the present application disclose a transmission control method, an apparatus, and an electronic device. The method comprises the following steps of: entering a set playing scene, wherein the content played in the content playing scene comprises audio data and image data; detecting whether the electronic device is in a connected state of the audio playback device; as the electronic device is detected to be in the connected state of the audio play device, a buffer threshold value of a buffer node passing through a process of transmitting audio data to an audio playback device being reduced, wherein processing of the audio data that has been buffered by the buffer node is started after detecting that the size of the audio data that has been buffered in the buffer node conformsto the buffer threshold value. The method enables the data at the buffer node to be processed faster in the case where audio data transmission to the audio playback device is required, so as to increase the frequency of the data processed in the buffer node, thereby enabling the audio data to be played out by the audio device faster and reducing the audio playback delay.

The embodiment of the present application discloses a method and a device for playing a multimedia file, a server, and a storage medium. The method is applied to the server, and the method includes the steps of: receiving a play request message sent by a client; from a preset key information list. determining target key information corresponding to the multimedia file assigned by the play requestmessage, wherein the target key information includes identification information of a target stream file corresponding to the multimedia file; generating the target stream file according to the targetkey information; and sending the target stream file to the client to allow the client to play.

The invention provides a video playing control method and device, equipment and a computer storage medium, relates to the technical field of computers. The method is used for reducing the video playing lagging degree. The method comprises the following steps: a terminal device receives a playing instruction for a to-be-played video, and obtains a target downloading address of the to-be-played video of which the video frame rate is a target frame rate from a video content server based on the video decoding capability of the terminal device; the target frame rate is a frame rate supported by the video decoding capability; a to-be-played video of a target frame rate is obtained according to the target downloading address; and the to-be-played video with the target frame rate is played. According to the method, the terminal device acquires the video to be played at the target frame rate supported by the video decoding capability of the terminal device, so that the decoding processing and playing of the video to be played can be quickly completed, the video decoding time consumption is reduced, the occurrence of video playing lagging caused by long video decoding time consumption is reduced, and the video playing fluency is improved.

The application discloses a method for displaying a virtual reality scene, and a virtual reality device and system. The method comprises: a target scene area corresponding to a to-be-displayed targetcontent in a virtual scene is determined, wherein the virtual scene is divided into multiple scene areas in advance; for each scene area, a corresponding CPU frequency and GPU frequency are set basedon the scene complexity; a first CPU frequency and a first GPU frequency corresponding to the target scene area are determined; and according to the first CPU frequency and the first GPU frequency, the CPU and the GPU are triggered to display the target content. Therefore, the number of frequency switching is reduced; the playing blocking is avoided; and the display effect is improved.

The invention discloses a video coding code rate control method and belongs to the video coding technology field. The method comprises steps that the code rate information of a video is acquired; images within the target unit time are extracted from the video, and the target unit time refers to the unit time when a code rate is greater than a preset value; the images are filtered; the images after filtering are coded and are then packaged to be video files. Through the method, problems of over-long coding time consuming and increase of probability of video playing failure existing in a code rate control method in the prior art are solved, on one hand, code rate reduction processing on images with relatively large code rates is carried out, the coding consuming time is reduced, on the other hand, a problem of video playing failure caused by slice loss can be avoided, probability of video playing failure is substantially reduced, moreover, through code rate reduction processing on the images with the relatively large code rates, a video peak code rate is substantially reduced, and purposes of reducing video playing lag and improving video playing smoothness are realized.

The invention provides a method for realizing real-time synchronous playing of multiple live broadcast playing ends. The method comprises the following steps: the playing ends request live broadcast playing data from a live broadcast server; the playing end keeps heartbeat connection with the live broadcast server and obtains a real-time timestamp; the live broadcast server sends playing data with a timestamp to the playing end; and the playing end receives the playing data, displays the live broadcast picture, compares the live broadcast timestamp with the heartbeat timestamp, and continuously corrects the playing picture. The method has the beneficial effects that the synchronous playing of a plurality of playing ends communicating with the server is ensured, the playing delay is reduced, the live broadcast timestamp and the heartbeat timestamp are compared, the playing picture is continuously corrected, and a live broadcast scene with a relatively high synchronization requirement is met.

The invention provides a video information transmission method and device, electronic equipment and a storage medium, and the method comprises the steps: monitoring different video information transmission channels in a network transmission layer, and determining the states of the different video information transmission channels; when the frame round-trip delay parameter in the network transmission layer is increased and exceeds a frame round-trip delay parameter threshold value, triggering to switch a video information transmission channel of the video playing terminal, and switching a first video information transmission channel to a target video information transmission channel; selecting a target video information transmission channel from different video information transmission channels; and transmitting the video information through the target video information transmission channel, thereby selecting the most suitable target video information transmission channel to transmit the video information so as to realize complete transmission of the video information in a network transmission layer; therefore, the video playing lagging caused by the change of a network environment and the insufficient decoding capability of the terminal can be reduced, and the use experience of a user is improved.

The invention discloses a live-broadcasting back-to-source method and system. The method comprises the following steps: sending a back-to-source path query request, receiving a back-to-source path information returned by a scheduling center, wherein the back-to-source path information comprises each layer of path information back to a flow-pushing server from the back-to-source server, and performing back-to-source to the upper layer of server of the back-to-source server according to the back-to-source path information, and sending a request parameter, wherein the request parameter comprisesthe back-to-source path information, and enabling the upper layer of back-to-source server to perform the back-to-source according to the back-to-source path information. The back-to-source path information returned by the scheduling center comprises each layer of back-to-source path information to the flow-pushing server from the back-to-source server, so that the upper layer of back-to-source server except the first layer of back-to-source server is unnecessary to communicate with the scheduling center when performing the back-to-source, the corresponding upper layer of server is directly determined according to the request parameter, the situation that each layer of server needs to communicate with the scheduling center in the prior art is avoided, the communication time is shortened, and the playing delay is further shortened.

The invention relates to the digital mobile communication field, particularly discloses a method for realizing multimedia color ring prestoring reception in a mobile communication system. The method comprises that, a multimedia color ring with a length of L bytes is divided into two portions, [0, Pn-1] and [Pn, L], a media server sends start end data [0, Pn-1] of the multimedia color ring set by a called part to a calling part, and the calling part receives the start end data [0, Pn-1] of the multimedia color ring sent from the media server and then stores the data. After starting a color ring service process, a calling user terminal receives multimedia color ring data [Pn, L] started from a jointing point Pn from the media server, and continuously plays the media color ring while jointing the start end data [0, Pn-1] of the prestored media color ring in network buffering. The invention is capable of effectively reducing playing relay of the multimedia color ring.

The embodiment of the invention belongs to the technical field of Internet, and relates to a method and system for playing a video, a camera device and a display device. The method comprises the steps: obtaining ultra-high-definition video data: dividing a first display area in a display interface according to the picture length-width ratio of the ultra-high-definition video data; editing the ultra-high-definition video data according to the display parameters of the first display area to obtain a first video clip; and playing the first video clip in the first display area. According to the application, the problems of playing lagging, data traffic consumption, network bandwidth occupation and the like in a video playing process can be reduced, and meanwhile, picture details of a target interested by a user are reserved.

The embodiment of the invention provides a data transmission method and device. The method comprises the steps of acquiring the data transmission progress of each data transmission channel; detecting whether the data transmission progress of the target data transmission channel meets a preset channel adjustment condition or not; if so, sending a first channel control signaling to a first data sender and a second data sender to instruct the second data sender to replace the first data sender to transmit video data through the target data transmission channel, wherein the first data sender is a data sender corresponding to the target data transmission channel, and the second data sender is a data sender corresponding to the data transmission channel with the fastest data transmission progress. According to the method, the problem that the data transmission progress of each data transmission channel is inconsistent and the fluency of video playing is influenced in the prior art is solved, and the effects of balancing the data transmission progress of each data transmission channel, improving the video data downloading speed and reducing video playing lagging are achieved.

A streaming media audio and video synchronous playing method based on B / S architecture comprises the following steps that A, at a sending end, the index number of a corresponding audio packet is introduced into the head of an RTP data packet of each video frame; b, the client receives the streaming media audio and video packets from the server side, caches the received audio and video packets intoa cache region, and sorts and frames the received audio and video packets; c, when the first index number corresponds to the second index number, synchronous processing is carried out; and D, the above steps are repeated to decode and output the video frame and the audio packet which are subsequently stored in the cache region until playing is finished. The method is simple and easy to operate and low in cost, the packet loss condition is processed without depending on a timestamp, a good smooth transition effect is achieved through the second-level cache, meanwhile, the processing and playing delay is reduced, and the lip sound inconsistency phenomenon caused by audio and video asynchronization in a real-time audio and video monitoring system is effectively eliminated.

A method for constructing the topology of a peer-to-peer network streaming media live broadcast system based on clustering. First, all nodes in the system are clustered at the initial stage. Secondly, after the clustering is completed, the topology structure inside the cluster is constructed. Finally, there are two main aspects to construct the topology structure between clusters: on the one hand, construct a virtual network and perform topology construction; on the other hand, construct the topology of inter-cluster nodes in the actual network. The invention balances the transmission of streaming media data blocks in the peer-to-peer network streaming media live broadcast system between bandwidth and delay, reduces the accumulated delay in the network, and makes the maximum Playback lag reduced.

The invention discloses a multimedia playing method and device, electronic equipment and computer readable storage.The method comprises the steps that when a trigger condition is detected, whether video frames in multimedia information stored in a cache region meet a preset frame loss condition or not is detected, and the multimedia information comprises multiple video frames; and when a video frame in the multimedia information satisfies a preset frame loss condition, performing frame loss processing on the multimedia information to discard expired multimedia information, and playing the multimedia information after the frame loss processing. Compared with the prior art, the video frame in the multimedia information stored in the cache region is subjected to frame loss processing, so that the expired multimedia information is discarded, high real-time performance of the subsequently played multimedia information can be ensured, the video playing delay is reduced, and real-time supervision of a manager is facilitated.

The invention provides a synchronous playing method, device and system, an electronic device and a readable storage medium, and the method comprises the steps: enabling each device to play a code stream through employing the same preset reference sequence, and enabling a slave device and a master device to maintain the synchronization of a playing reference; and the master device encapsulates the playing timestamps corresponding to the code streams to the protocol heads of the code streams and sends the playing timestamps to the slave devices, so that the code streams are forwarded while corresponding synchronization information is sent to the slave devices, the synchronous playing effect is effectively improved, the playing delay is reduced, redundant broadcast messages are reduced, and the upper limit of the cascading scale of a product can be improved.

The invention relates to a Bluetooth transmission data playing method and device and a Bluetooth transmission data sending method and device. The Bluetooth data playing method is applied to receivingequipment, the receiving equipment is in Bluetooth connection with a sending device. The method comprises the steps that: an independent data receiving thread receives a data packet sent by a sendingdevice and stores the data packet in a buffer storage area of a receiving device, the data packet comprises a data packet at the current playing position and a data packet after the current playing position, and the data packet is audio data and / or video data; the data packet is played. By caching the data packet at the current playing position and the data packet which is not played after the current playing position, the playing delay is reduced, the playing synchronization between the receiving device and the sending device is ensured, and when the Bluetooth signal is not good, the receiving device can still maintain normal playing, so that sound interruption and jamming are avoided, and the user experience is improved.

The present application provides a multimedia playback control method, terminal, speaker device and system, which belong to the technical field of computers. The method includes: the terminal can acquire basic information of the speaker device, establish a connection with the speaker device based on the basic information of the speaker device, then acquire the state information of the speaker device from the speaker device, and use the state information of the speaker device to send multimedia playback to the speaker device. list. After receiving the multimedia playlist, the speaker device can determine the multimedia to be played, obtain the data of the multimedia to be played by using the play link of the multimedia to be played, and play the data of the multimedia to be played. By adopting the present application, the multimedia playback delay can be reduced.

The present invention provides a video encoding method, device, electronic equipment, and storage medium. The method includes: determining network bandwidth information based on the network bandwidth environment of the video playback terminal; determining decoding computing power information of the video playback terminal; and obtaining information in the video playback environment The capacity configuration information of the playback buffer pool; based on the network bandwidth information, decoding computing power information and the capacity configuration information of the playback buffer pool, dynamically adjust the encoding strategy for video playback, and determine the video encoding strategy that matches the playback environment of the target video Encode the target video through the determined video encoding strategy, thus, the encoding strategy for video playback can be flexibly adjusted by using the network bandwidth information, the decoding computing power information, and the capacity configuration information of the playback buffer pool , reduce video playback freezes caused by changes in the network environment and insufficient terminal decoding capabilities, and improve user experience.