34results about How to "Reduce playback delay" patented technology

The invention discloses a dual wireless bluetooth device master-slave switching method, device, device and audio system. The master-slave switching method of the wireless slave device includes: acquiring a switching trigger event for master-slave role switching; generating a master-slave switch according to the switching trigger event Request; send the master-slave switching request to the wireless master device at the sub-slot preset at the anchor point position of the slave device through the established master and slave Bluetooth links; when the target anchor point of the master-slave The master device performs master-slave role switching operations. The existing communication link is time-division multiplexed, and the master-slave switch is performed using the idle time interval in the standard time slot, so that the audio playback delay and the jamming phenomenon of the master-slave device can be reduced during the master-slave switch; effectively The position resource of the sub-slot is utilized, the transmission amount of communication information is reduced, and the bandwidth loss is further 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 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 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 invention discloses a karaoke system of a mobile device and a mobile device. The system includes an audio decoding module 11, a sound card driving acquisition module 12, a stream mixing module 13 and a sound card driving playing module 14; the audio decoding module 11 is used for reading a music file and decoding the music files into background audios; the sound card driving acquisition module 12 is used for calling the driving interface of a sound card to receive singing signals and converting the singing signals into singing audios; the stream mixing module 13 is used for receiving the background audios and the singing audios, combining the background audios and the singing audios into audio data; and the sound card driving playing module 14 is used for calling the driving interface of the sound card to push the audio data to the sound card for audio playing. With the karaoke system of the invention adopted, playing delay time can be effectively decreased, and user experience can be greatly improved.

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 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 present invention provides a data synchronization method, device and computer-readable storage medium. The method includes: receiving a database request from a terminal through a master computer, generating a redo log and a binary log according to the database request, and synchronizing the redo log Copying to multiple synchronous standby machines, and asynchronously copying the binary log to multiple asynchronous standby machines, after receiving the response from each synchronous standby machine based on the redo log, re-receiving the database request from the terminal; the present invention implements For example, by adopting the two data synchronization methods between the active and standby data nodes, the logical replication based on the logical log and the physical replication based on the physical log, the fusion synchronization between the active and standby data nodes can be realized, and the synchronization performance between the active and standby data nodes can be effectively improved. , thereby improving the overall performance of the distributed database; and can reduce the playback delay of the standby machine node and improve the high availability of the distributed database.