36results about How to "Reduce playback delay" patented technology

The invention discloses a method and a system for shortening time delay in a peer-to-peer network streaming media live broadcast system. The system is provided with a media source node and a cache routing server, wherein the media source node is used for the media resource management of the whole system; the cache routing server is used for media resource management, routing calculation and peer client end management in a local domain; the cache routing server is used for selecting a proper peer client end from other managed peer client ends and establishing streaming media data interaction with a request peer client end; when needed media streaming data does not exist in the peer client end managed by the cache routing server, the cache routing server is used for requesting needed streaming media data information from other cache routing servers and transmitting the needed streaming media data information to the request peer client end; and when the cache routing server is failed forobtaining the needed streaming media data from other cache routing servers, the cache routing server is used for obtaining the needed data from the media source node and transmitting the needed data to the request peer client end.

The invention discloses a master-slave switching method and device for double wireless Bluetooth equipment, equipment and an audio system. The master-slave switching method comprises the following steps: acquiring a switching trigger event of master-slave role switching; generating a master-slave switching request according to the switching trigger event; sending a master-slave switching request to a wireless master device through preset sub-time slots of an established master and slave Bluetooth link at the anchor point position of the slave device end; and when the target anchor point of master-slave switching arrives, executing master-slave role switching with the current wireless master device. The existing communication link is subjected to time division multiplexing, and master-slaveswitching is carried out by utilizing an idle time interval in a standard time slot, so that the phenomena of audio playing delay and jamming of master-slave equipment can be reduced during master-slave switching; position resources of the sub time slots are effectively utilized, communication information transmission quantity is reduced, and bandwidth loss is further reduced.

The invention discloses a media play method, media play equipment and a music teaching system. The media play equipment comprises a receiving unit, an audio decoding unit and an audio play unit. The receiving unit is suitable for receiving audio data from a network. The audio decoding unit is suitable for decoding the received audio data to acquire one or more audio frames. The audio play unit is suitable for performing silence detection on each acquired audio frame to judge whether the audio frame is silence data or not. If the detected audio frame is silence data, the audio play unit abandons the audio frame. If the detected audio frame is non-silence data, the audio play unit stores the audio frame in a play buffer area, so as to play the audio frame in the play buffer area.

The invention discloses a transmission method and a system of a video-audio data stream, which relates to the mobile streaming media field. The transmission method of the video-audio data stream proposed by the invention orderly writes one frame data which can be decoded and is provided with the same time stamp into a multiplex subframe after being encapsulated into a video or an audio unit from a video or an audio stream waiting to be transmitted according to the frame boundary, The playing time information of each video or audio unit is recorded in the multiplex subframe, and the generated multiplex subframe is sent to a terminal. The method of the invention can increase the CMMB multiplexing efficiency, reduce the playing delay of the terminal and improve the de-multiplexing performance of the terminal.

The invention discloses a live streaming video playing method and device, and relates to the technical field of voice recognition, the technical field of video processing and the field of image processing. The specific implementation scheme is as follows: acquiring live streaming data, wherein live streaming comprises audio information and video stream information; identifying text information corresponding to the audio information, and generating subtitle information according to the text information; determining a start time point and an end time point corresponding to the subtitle information, and determining video frames corresponding to the start time point and the end time point in the video stream information; and storing the corresponding relationship between the subtitle information and the corresponding video frame in a preset database so as to play the live video according to the corresponding relationship. Therefore, on the basis of matching the subtitle information for thelive video stream, since the subtitle information and the video stream do not need to be mixed to generate new video data, the playing delay of the live video stream is reduced.

The invention relates to a video transmission rate adaptation method applied to wireless networks. The video transmission rate adaptation method includes preliminarily arranging an output cache area at an output end of a buffer area; storing data packets outputted from the buffer area in the output cache area and acquiring the total amount of the stored data packets in current unit time thresholds; adjusting the speeds for reading data of the buffer area if the total amount of the data packets stored within the current unit time thresholds is unequal to the total amount of data packets storedwithin a previous unit time threshold and fluctuates within the range of 10% of the total amount of the data packets stored within the previous unit time threshold; adjusting the strength of encodersfor processing I frames of images in a next time frame if the total amount of the data packets stored within the current unit time thresholds does not fluctuate within the range of 10% of the total amount of the data packets stored within the previous unit time threshold but fluctuates within the range of 35% of the total amount of the data packets stored in the previous unit time threshold. Unittime thresholds for storing the corresponding data packets are preset in the output cache area.

The invention discloses a streaming media playing method and a device. The playing method comprises the following steps of using a client end for dynamically detecting streaming media transmission quality and leading the client end to adjust the current streaming media playing speed and the time length of a buffer region by preset principles according to the current streaming media transmission quality. The playing device comprises a streaming media transmission quality detection module and a streaming media playing media, wherein the streaming media transmission quality detection module is used for dynamically detecting the streaming media transmission quality; the streaming media playing module is used for adjusting the current streaming media playing speed and the time length of the buffer region by the preset principles according to the current streaming media transmission quality. The streaming media playing method and the device can ease the impact of network delay and further bring a better streaming media playing experience for a user.

The invention provides a streaming media data transmission method, device and system, electronic equipment and a storage medium, and relates to the technical field of computers. The streaming media data transmission method comprises the following steps: repackaging original media data into streaming media data; in response to the detection that the playing mode of the streaming media data is an on-demand mode, segmenting the streaming media data into first slice data blocks, and determining a first index file corresponding to the first slice data blocks; in response to the detection that the playing mode of the streaming media data is a live broadcast mode, segmenting the streaming media data into second slice data blocks, and determining a second index file corresponding to the second slice data blocks; pushing the first index file or the second index file to a client, and downloading the first slice data block or the second slice data block by the client through the first index file or the second index file so as to realize the playing of the original media data. According to the technical scheme provided by the embodiment of the invention, the playing efficiency of on-demand playing or live broadcasting of the original media data can be improved.

The application provides a stream push method, equipment and device, and a storage medium. The method comprises the following steps: collecting streaming media data, and coding and caching the collected streaming media data to a cache region; and obtaining the streaming media data from the cache region and sending the streamlining media data to a server. The stream push method, equipment and device, and the storage medium in the invention aim to solve the problem of initialization failure or jamming of a coding link after stream push is restarted after being interrupted in the existing streampush technology.

The embodiment of the invention provides a webpage video playing method and device, electronic equipment and a storage medium. The webpage video playing method is applied to a cloud server and comprises the following steps: acquiring video parameters of a video in a webpage; and sending the video parameters to a cloud terminal, the video parameters being used for the cloud terminal to decode and play the video.

The invention provides a data synchronization method and device and a computer readable storage medium, and the method comprises the steps: receiving a database request from a terminal through a main machine, and generating a redo log and a binary log according to the database request; synchronously copying the redo log to a plurality of synchronization standby machines, and asynchronously coping the binary logs to a plurality of asynchronous standby machines; and after response based on the redo logs from each synchronous standby machine is received, receiving the database request from the terminal again. According to the embodiment of the invention, by adopting two data synchronization modes, namely logic replication based on logic logs and physical replication based on physical logs, between the main and standby data nodes, fusion synchronization between the main and standby data nodes is realized, the synchronization performance between the main and standby data nodes is effectively improved, and the overall performance of the distributed database is further improved; and moreover, the playback time delay of the standby machine node can be reduced, and the high availability of the distributed database is improved.

The embodiment of the invention discloses a video live broadcasting method and a device thereof. A queue aiming at received PES (Packetized Elementary Streams) packets is preset. The method comprises the following steps: determining whether the total time of the received live broadcast video PES packets is not greater than a preset optimal broadcasting time duration; decoding and broadcasting the live broadcast video PES packets if the total time of the received live broadcast video PES packets is not greater than the preset optimal broadcasting time duration; successively adding the live broadcast video PES packets in the queue if the total time of the received live broadcast video PES packets is greater than the preset optimal broadcasting time duration; determining the number of PES packets to be modified according to the total time of the live broadcast video PES packets in the queue, the preset optimal broadcasting time and the broadcasting time occupied by single live broadcast video PES packet when the condition is met; modifying DTS (Decode Time Stamp) of the PES packets to be modified to be same and modifying PTS (Presentation Time Stamp) of the PES packets to be modified to be same; decoding the PES packets in the queue according to the DTS, and returning to the determining step and continuing to perform after finishing decoding the PES packets; and then broadcasting the decoded PES packets according to the PTS. Through the adoption of the video live broadcasting method and the device thereof, the broadcast delay time of the live broadcast video is reduced.

The present invention discloses a method and device of realizing synchronous playing. The method comprises the steps of separately determining the first differences between the system time and the own system time of mobile terminals; separately determining the complexities and the playing time delays of the playing files that can be processed by the mobile terminals; determining the complexities of the to-be-played files according to the complexities of the playing files that can be processed by the mobile terminals; sending the to-be-played file data to the mobile terminals capable of processing the determined complexities according to the first differences and the playing time delays of the mobile terminals capable of processing the determined complexities to realize the synchronous playing. According to the method of the present invention, by comparing the first differences between the system times of the mobile terminals and the playing time delays of the mobile terminals, the synchronous playing is realized, and the playing time delays of the mobile terminals are reduced.

The invention relates to a method and device for reducing video playing delay, computer equipment and a memory medium. The method comprises the steps of obtaining consumption data amount correspondingto each time period within a current statistics period in jitter buffer queues, and selecting target consumption data amount from the consumption data amount corresponding to each time period according to a preset rule; obtaining standard consumption data amount, and determining dynamic consumption data amount according to the target consumption data amount and the standard consumption data amount; obtaining the standard consumption data amount corresponding to a current adjustment period, and carrying out calculation according to the standard consumption data amount corresponding to the current adjustment period and the dynamic consumption data amount, thereby obtaining adjustment consumption data amount corresponding to the current adjustment period; and carrying out data consumption inthe current adjustment period according to the adjustment consumption data amount. The video playing delay is reduced.

The invention relates to a video transmission rate adaptation method applied to wireless networks. The video transmission rate adaptation method includes preliminarily arranging an output cache area at an output end of a buffer area; storing data packets outputted from the buffer area in the output cache area and acquiring the total amount of the stored data packets in current unit time thresholds; adjusting the speeds for reading data of the buffer area if the total amount of the data packets stored within the current unit time thresholds is unequal to the total amount of data packets storedwithin a previous unit time threshold and fluctuates within the range of 10% of the total amount of the data packets stored within the previous unit time threshold; adjusting the strength of encodersfor processing I frames of images in a next time frame if the total amount of the data packets stored within the current unit time thresholds does not fluctuate within the range of 10% of the total amount of the data packets stored within the previous unit time threshold but fluctuates within the range of 35% of the total amount of the data packets stored in the previous unit time threshold. Unittime thresholds for storing the corresponding data packets are preset in the output cache area.

The invention provides a network video live broadcast processing system and method. The network video live broadcast processing system includes a first soft core processor, a second soft core processor and a memory, wherein the first soft core processor is connected with a peripheral camera for controlling the peripheral camera to acquire video data and receive the video data; the first soft core processor is connected with the memory for sending the video data to the memory; the second soft core processor is connected with the memory for calling the video data from the memory and sending the video data to a peripheral terminal; and the memory is used for synchronously storing and calling the video data. The network video live broadcast processing system and method can realize acquisition, sharing synchronization and transmission of video data to enable transmission to become more flexible and quick, and can reduce time-delay of video playing, through division processing of the soft core processors.

The invention discloses a method and a system for shortening time delay in a peer-to-peer network streaming media live broadcast system. The system is provided with a media source node and a cache routing server, wherein the media source node is used for the media resource management of the whole system; the cache routing server is used for media resource management, routing calculation and peer client end management in a local domain; the cache routing server is used for selecting a proper peer client end from other managed peer client ends and establishing streaming media data interaction with a request peer client end; when needed media streaming data does not exist in the peer client end managed by the cache routing server, the cache routing server is used for requesting needed streaming media data information from other cache routing servers and transmitting the needed streaming media data information to the request peer client end; and when the cache routing server is failed forobtaining the needed streaming media data from other cache routing servers, the cache routing server is used for obtaining the needed data from the media source node and transmitting the needed data to the request peer client end.

The invention discloses an audio playback method based on an Android system and electronic equipment. The audio playback method comprises the following steps: setting an audio playback mode control module; determining and transmitting an audio information transmission path; determining and outputting an audio information output path; and when the control state of the audio playback mode is 1, allowing an audio output driving module to respectively receive first audio information of an audio input driving module and second audio information of an audio output intermediate module, taking third audio information formed by operation of the first audio information and the second audio information as input information, and outputting the input information. By arranging the audio playback mode control module, the audio information playback transmission path is shortened, audio playback delay is shortened, and user experience is improved.

The application discloses a real-time video playing method in QT environment, which comprises the following steps: S1, creating a compiling environment; S2, making a transmission service rule; S3, initializing ffmpeg stream pulling and decoding resources; S4, creating a stream pulling main thread; S5, decoding a data packet object obtained by stream pulling; S6, converting a decoded image frame; S7, obtaining the converted image frame and displaying in real time; and S8, releasing decoding channel resources. The application adopts a soft decoding method, effectively reduces decoding time, simultaneously adopts an RTSP video transmission protocol to obtain a video stream, effectively reduces playing delay, and guarantees video playing fluency.

The invention discloses a media playing method, equipment and a music teaching system. Wherein, the media playing device includes a receiving unit, an audio decoding unit and an audio playing unit. The receiving unit is adapted to receive audio data from the network. The audio decoding unit is adapted to perform a decoding operation on the received audio data to obtain one or more audio frames. The audio playback unit is adapted to perform a silence detection operation on each acquired audio frame to determine whether the audio frame is silence data. If the detected audio frame is silent data, the audio playback unit discards the audio frame. If the detected audio frame is not silent data, the audio playback unit stores the audio frame into the playback buffer, so as to perform a playback operation on the audio frame in the playback buffer.

The embodiment of the invention discloses a video live broadcasting method and a device thereof. A queue aiming at received PES (Packetized Elementary Streams) packets is preset. The method comprises the following steps: determining whether the total time of the received live broadcast video PES packets is not greater than a preset optimal broadcasting time duration; decoding and broadcasting the live broadcast video PES packets if the total time of the received live broadcast video PES packets is not greater than the preset optimal broadcasting time duration; successively adding the live broadcast video PES packets in the queue if the total time of the received live broadcast video PES packets is greater than the preset optimal broadcasting time duration; determining the number of PES packets to be modified according to the total time of the live broadcast video PES packets in the queue, the preset optimal broadcasting time and the broadcasting time occupied by single live broadcast video PES packet when the condition is met; modifying DTS (Decode Time Stamp) of the PES packets to be modified to be same and modifying PTS (Presentation Time Stamp) of the PES packets to be modified to be same; decoding the PES packets in the queue according to the DTS, and returning to the determining step and continuing to perform after finishing decoding the PES packets; and then broadcasting the decoded PES packets according to the PTS. Through the adoption of the video live broadcasting method and the device thereof, the broadcast delay time of the live broadcast video is reduced.

The invention relates to a method and device for reducing video playing delay, computer equipment and a memory medium. The method comprises the steps of obtaining consumption data amount correspondingto each time period within a current statistics period in jitter buffer queues, and selecting target consumption data amount from the consumption data amount corresponding to each time period according to a preset rule; obtaining standard consumption data amount, and determining dynamic consumption data amount according to the target consumption data amount and the standard consumption data amount; obtaining the standard consumption data amount corresponding to a current adjustment period, and carrying out calculation according to the standard consumption data amount corresponding to the current adjustment period and the dynamic consumption data amount, thereby obtaining adjustment consumption data amount corresponding to the current adjustment period; and carrying out data consumption inthe current adjustment period according to the adjustment consumption data amount. The video playing delay is reduced.

The application provides a stream push method, equipment and device, and a storage medium. The method comprises the following steps: collecting streaming media data, and coding and caching the collected streaming media data to a cache region; and obtaining the streaming media data from the cache region and sending the streamlining media data to a server. The stream push method, equipment and device, and the storage medium in the invention aim to solve the problem of initialization failure or jamming of a coding link after stream push is restarted after being interrupted in the existing streampush technology.

The application discloses a video decoding real-time playing method in QT environment, which comprises the following steps: S1, creating a compiling environment; S2, initializing ffmpeg stream pulling and decoding resources; S3, creating a stream pulling main thread; S4, decoding a data packet object obtained by the stream pulling; S5, carrying out format conversion on the decoded image frame; S6, obtaining the image frame after the format conversion and displaying in real time; and S7, releasing the decoding channel resources. The application adopts a soft decoding method, effectively reduces the decoding time, simultaneously adopts an RTSP video transmission protocol to obtain a video stream, effectively reduces playing delay, and guarantees the fluency of video playing.

The invention discloses an audio data flow transmission method and an audio data flow transmission device. The audio data flow transmission method comprises steps that when an audio source is detectedby first equipment, a first virtual input link and a first output link are established; based on the first virtual input link, audio data is acquired from au audio input buffer area corresponding tothe audio source, and is disposed in a data source audio buffer area in a filled way; the first equipment is used to acquire the audio data from the data source audio buffer area based on the first output link, and is used to output the audio data via a first audio output buffer area. By adopting the technical scheme provided by the invention, time delay of audio synchronous playing is reduced.

The invention belongs to the technical field of a real-time video transmission and relates to a real-time video transmission device and a real-time video transmission method. A sampling terminal encodes the sampled video data and transmits the video data to a streaming media server terminal via a UDP manner; the streaming media server terminal flowing processes the video data transmitted from the sampling terminal in real time and packages the video data into a standard RTP data package according to a RTP protocol rule; then the streaming media server terminal and a player terminal are interacted by using the RTP protocol, so that the RTP package is transmitted to the player terminal; the player terminal plays the received video data. The real-time video transmission device is simple in structure, reliable in principle and easy to popularize and apply and has good video transmission stability and video playing continuity.

The invention discloses an audio processing method and device, electronic equipment, a computer readable medium and a product, and relates to the technical field of audios, the method is applied to a sending terminal of an audio coding system, the audio coding system further comprises a receiving terminal, the sending terminal is connected with the receiving terminal, and the method comprises the following steps: obtaining audio data to be transmitted; determining the audio type of the audio data to be transmitted; if the audio type of the to-be-transmitted audio data is a specified type, reducing the data volume of the to-be-transmitted audio data to obtain target audio data; and sending the target audio data to the receiving terminal.