170results about How to "Guaranteed normal playback" patented technology

The invention discloses a method for editing a video file. The method comprises the following steps of: buffering acquired video sample and audio sample respectively; according to starting time sample and sample; picking up and decoding the video audio samples which are synchronized for previewing, simultaneously configuring a file header, generating a fragment file, continuously writing the video audio samples which are synchronized in the fragment file; and according to the information on whether the video sample in the fragment file is a key frame, determining a dividing point of the fragment file, adding the index information to the fragment file in which the video audio samples which are synchronized are written, and generating the whole fragment file. The invention also provides a device for editing the video file. Based on the method and the device, the video fragment file which is finally released can be generated when the video fragment file is being edited in real time, so that the release flow is shortened, and the editing efficiency is improved.

The invention discloses an electric extrusion device of a breathing bag. The extrusion device is fixed on the periphery of the breathing bag through an upper fixing block and a lower fixing block. The extrusion device comprises two mechanical arms which are symmetrically arranged on the two sides of the breathing bag and driven by a stepping motor. The two mechanical arms are both fixed to the upper fixing block through rotary shafts. The stepping motor simultaneously controls extrusion and expansion actions of the two mechanical arms through a gear rotating coaxially with the stepping motor. An upper rack and a lower rack which perform transmission in cooperation with the gear and opposite in transmission direction are arranged at the upper end and the lower end of the gear respectively. The end portion of the upper rack and the end portion of the lower rack are hinged to the end portions of the two mechanical arms through transmission rods, and the other end of each mechanical arm is provided with a manipulator matched with the peripheral face of the breathing bag in shape. The electric extrusion device of the breathing bag can replace human hands to press the breathing bag, is small in size and convenient to carry and facilitates implement of first-aid work. The mechanical operation can ensure the frequency of oxygen supply and stability of tidal volume, and thus quality of the first aid for a patient is improved.

The invention discloses a method for realizing network TV program carousel based on a real-time transport protocol, comprising the following steps: a playing terminal receives and analyzes SDP which is transmitted by a media server and comprises a media type database; a media format information table taking effective loading PT as an index is built according to an analysis result; whether an obtained programme identification is the same with the current programme identification or not is determined; whether the current media format information is same with that of the previous program or not is determined; according to a determined result, whether the current decoder continues to be adopted or not is determined according to the determined result, or the current decoder is closed, and the decoder to which the current program corresponds is started to decode. The method of the invention can start the decoder corresponding to the media type of the current programme to decode in time and ensure the playing terminal can play programme normally.

The invention discloses an advertisement play method based on user position information, and the method comprises the following steps: 1, collecting an image of a user entering a photographing region,carrying out the human face recognition of the image, and obtaining the attribute information of the user; 2, calculating the distance between the user and an advertisement machine, executing step 3when the distance between the user and the advertisement machine is less than a preset distance, or executing step 2 when the distance between the user and the advertisement machine is not less than the preset distance; 3, extracting an advertisement matched with the attribute information of the user, and playing the advertisement matched with the attribute information of the user through the advertisement machine. Based on the judgment of position information and the setting of classified advertisements, the method can play an advertisement meeting the demands of the user at a proper moment,and greatly improves the user experience and satisfaction.

The invention relates to an application management method, device and system and belongs to the field of internet technologies. The method comprises the steps of acquiring an installation state of any application in an intelligent display device; generating an application management instruction according to the installation state; sending the application management instruction to the intelligent display device used for managing the application according to the application management instruction. By means of the application management method, device and system, the problem that the current playing contents cannot be played and displayed normally in the intelligent television when the applications in the intelligent television are managed by correlation techniques is solved. Under the premise that the normal playing and displaying of the current playing contents in the intelligent display device are ensured, users can check the installation states of the applications in the intelligent display device from a mobile terminal side, the mobile terminal controls the intelligent display device to manage the applications in background, and users can manage the applications in the intelligent display device more conveniently.

The invention is applicable to the technical field of web televisions and provides a method for intelligently playing a web television. The method comprises the following steps of: 10, starting the web television; 20, judging whether an intelligent play function is opened, if so, turning to a step 30; 30, detecting the network speed; 40, dividing a network speed grade according to the network speed; and 50, taking an audio file as a preferentially played file according to the network speed grade, and selecting a playing mode matched with the network speed. Due to the method for intelligently playing the web television, the playing of the audio file is preferentially guaranteed, so that a user can hear smooth sound at any network speed, and the playing quality is guaranteed.

The embodiment of the invention provides a video editing method and system, and the system comprises the steps: obtaining a to-be-edited video uploaded by a user, and carrying out the decoding of the to-be-edited video, so as obtain a plurality of key frames in the to-be-edited video and the moments corresponding to the plurality of key frames; obtaining the starting frame and the ending frame determined by the user in the to-be-edited video, and obtaining the starting moment of the starting frame and the ending moment corresponding to the ending frame; determining a starting key frame, corresponding to the starting frame, in the plurality of key frames according to the moments and starting moments corresponding to the key frames, and determining an ending key frame, corresponding to the ending frame, in the plurality of key frames according to the moments and ending moments corresponding to the key frames; and editing the to-be-edited video according to the starting key frame and the ending key frame. The method is used for simplifying the user's operation for editing the video.

The invention relates to the technical field of the video conference, and specifically relates to a test method and device of video delay in a video conference. The method comprises the following steps: acquiring first video data obtained by decoding a to-be-tested first data message by a multi-point control unit and a to-be-tested second data message with a time stamp; decoding the to-be-tested second data message to obtain the second video data and the time stamp; computing based on a timestamp of the first video data and the time stamp corresponding to the second video data to obtain delayof the multi-point control unit. Through the method disclosed by the invention, the timestamp is added when decoding the received to-be-tested first data message, wherein the timestamp is the corresponding timestamp when performing the decoding by the multi-point control unit; the time stamp is added when performing media processing on the decoded video data, and the time stamp is the corresponding time in the media processing; the delay caused by the transmission of the data message in the network can be avoided based on the timestamp and the time stamp, and the method has relatively high reliability.

The invention discloses a method and device for reconstructing media data. The method comprises the step of de-multiplexing a transport stream of a program to obtain original media data including video data of the program, the step of resetting a PCR in the original media data according to a local clock, the step of slicing the original media data with the reset PCR according to the method of regarding an I frame of the video data as an initial frame of the video data of slices, the step of setting index messages for all slices, and the step of regarding the slices on which the index messages are set as reconstructed data of the program to be stored. The method and device for reconstructing the media data solve the problem that due to the fact that the requirements for streaming media initial data formats of operating systems of different client terminals are different, streaming media cannot be played normally, and the performance of the service of directly playing the streaming media among the client terminals is promoted.

The invention relates to a stream media data request transmission method for multimedia telephone peer-to-peer (P2P) video-on-demand. A combination of one or more of a node marking mechanism, a safety zone compensation strategy and a data request scheduling strategy is adopted, wherein the node marking mechanism marks corresponding nodes according to a response of P2P data nodes to a data request and acquires data from a high-quality P2P data node; the safety zone compensation strategy pre-detects a data insufficient situation in a buffer zone and supplies sufficient buffer data to data reduction playback by quickly downloading deficient data blocks to a content delivery network (CDN) server; and the data request scheduling strategy schedules a data transmission rate and a data block requesting sequence among data transmission channels established between a user node and the various P2P data nodes so as to acquire a minimum data transmission delay. By adopting the stream media data request transmission method, even a stream media data quantity is larger, continuous and smooth playback of stream media can be realized; and the stream media data request transmission method is economic and convenient and has a wide application prospect.

A recording medium having recorded thereon one or more pieces of playlist information each of which includes a stream table including multiple stream entries. Each audio stream has been encoded in one of a mandatory format that is an encoding format decodable by a playback apparatus with any version number, and an optional format that is an encoding format decodable by a playback apparatus with a predetermined or higher version number. In a first-type stream table, a stream entry corresponding to an audio stream encoded in the optional format is immediately subsequent, in the order of the stream entries, to a stream entry corresponding to an audio stream encoded in the mandatory format, the audio stream encoded in the optional format and the audio stream encoded in the mandatory format having been encoded from a same audio source and having a same language code and a same number of channels.

The invention discloses a video clipping method and device. The method comprises the following steps: acquiring a preset start time point and a preset stop time point for clipping video data to be clipped; determining a start video frame corresponding to the preset start time point in the video data to be clipped; if the start video frame is a non-key frame, respectively determining a target videoframe with a complete video picture for each video frame from the start video frame to a middle video frame, wherein the middle video frame is a video frame which is positioned behind the start videoframe and in front of a target key video frame and is adjacent to the target key video frame, and the target key video is a key video frame which is positioned behind the start video frame and is closest to the start video frame; and writing each encoded target video frame and each video frame from the target key video frame to a stop video frame into a target video file in sequence. According tothe video clipping method disclosed by the embodiment of the invention, the clipping speed of the video frame to be clipped is guaranteed, and the clipping precision is also guaranteed.

An embodiment of the invention relates to a video processing method and device. The video processing method includes: obtaining video playing parameters, wherein the video playing parameters include original aspect ratio of videos; obtaining width and height of a screen of a user device; calculating the width and the height of an effective area in video output according to the original aspect ratio of the videos and the width and the height of the screen of the user device; outputting the videos according to the width and the height of the effective area in video output.

The invention relates to a method, a device and a facility for receiving peer-to-peer (P2P) resources. The method for receiving the P2P resources includes obtaining resource transmission information corresponding to the P2P resources which are being received, selecting at least one super node to be linked from one or more scheduled super nodes corresponding to the P2P resources when the resource transmission information meets scheduled transmission conditions, requesting the P2P resources from the at least one super node to be linked which is selected, and receiving resource information from the P2P resources of the at least one super node to be linked. The method, the device and the facility for receiving the P2P resources has the advantages that the resources can be successfully obtained by means of obtaining the P2P resources from the super nodes when unsmooth transmission caused by problems of network, transmission nodes and the like in the transmission process of the P2P resources is found, the efficiency of obtaining the resources is improved, and accordingly, the user experience can be improved.

The embodiment of the invention provides a different-end audio and video playing method, a device and an audio and video playing system. The different-end audio and video playing method is applied tofirst equipment. The method comprises the steps of acquiring audio and video data; simultaneously sending the audio data and the time delay detection data to second equipment by utilizing a first communication protocol, so that the second equipment returns time delay response data and caches the audio data after receiving the audio data and the time delay detection data, and playing the audio dataafter a preset caching duration; receiving data based on the time delay response data, obtaining the playing time delay of playing the audio data by the second device, wherein the time delay responsedata comprises feedback data corresponding to the time delay detection data and preset cache duration; and playing the video data after the playing time delay. According to the scheme, the effect ofaudio and picture synchronization during different-end audio and video playing can be achieved.

An active delay device in a streaming media transmission system based on a universal series bus is provided and comprises a transmission delay determining unit, an actuating delay determining unit, an intrinsic delay determining unit, an intrinsic delay, a comparator, an active delaying arrangement unit, an active delay value, wherein the intrinsic delay is used for calculating each terminal device according to the transmission delay and the actuating delay, and the active delay value is used for determining each terminal device according to a maximum intrinsic delay value and the intrinsic delay of each terminal device. The terminal devices which need to perform control commands in the same frequency can accurately be synchronized, or each terminal device can perform each action according to strict time intervals, particularly in a sound mixing system, the fact that each terminal device strictly performs displaying of sound mixing signals at the same time is effectively ensured, and echo is prevented from being generated.

The invention discloses a multimedia file splicing method. The method comprises the steps of obtaining a plurality of to-be-spliced source multimedia files, and determining a target audio attribute; generating a mute audio data stream which matches the total playing duration of the plurality of source multimedia files and has the same attribute as the target audio; performing unified format processing on the audio data streams in the plurality of source multimedia files to obtain audio data streams with the same attribute as the target audio; and splicing the audio data streams subjected to the unified formatting processing, and mixing the spliced audio data streams with the mute audio data stream to obtain a spliced audio mixing data stream. Therefore, the phenomena of abnormal splicing,incapability of playing and the like caused by inconsistent audio attributes or audio loss of the source multimedia file are avoided. The invention further discloses a corresponding device, equipmentand a medium.

An encoding method and device are provided for a series of data packets transmitted in the framework of a combined streaming and downloading application by a two-stage error protection process and only one unidirectional transmission channel. A partial block of successive data packets is protected against some transmission errors occurring during streaming with the aid of a first error protection process while all data packets are protected against the transmission errors that can remain after streaming is completed with the aid of a second error protection process. In a decoding process, a series of data packets that are encoded according to the encoding are decoded.

The invention discloses a device for recording a multimedia web page. The device comprises a memory sharing device, a playing and recording device and a web page device, wherein the memory sharing device is used for providing initial parameters related to playing and recording; the playing and recording device is used for binding a recording target in a multimedia file according to the initial parameters and recording the bound target in the process of playing the multimedia file; and the web page device is started by a browser based on a Windows operating system framework and used for calling the playing and recording device embedded into the web page device. The invention also discloses a corresponding multimedia recording apparatus and a corresponding method for recording the multimedia web page. The invention effectively extends supports to multimedia file formats capable of playing and recording and has low cost.

The invention discloses a method and a system for verifying advertisement playing information based on a block chain technology, and the method comprises the steps: S1, arranging received advertisement order data into ordered playing data which comprises the playing time and the playing frequency, and storing the ordered playing data; S2, polling the ordered playing data when a preset time is reached, and playing an advertisement according to the playing time and the playing times; S3, generating an advertisement playing report according to the recorded actual playing condition, wherein the advertisement playing report adopts an identification character string of advertisement playing equipment as an identification; and S4, generating an advertisement playing message corresponding to the advertisement according to the advertisement playing report, and uploading the advertisement playing message to a block chain for storage. The advertisement can be played according to the requirements in the advertisement order data after being played from the advertisement playing time, the playing report and the advertisement playing information are prevented from being tampered, and the advertisement putting effect is improved.

The iinvention method for optimizing the virtual desktop transmission based on the FPGA. A server side, a client side and an SPICE Server side are included; the server side is additionally provided with an FPGA card with a 10-gigabit network port. The method includes: transforming the SPICE Server end: enabling the SPICE Server end to directly call the FPGA to carry out video image compression ofthe desktop and a video, and directly sending the compressed desktop and video to the client through the network port; carrying out decompressing and displaying in the client by utilizing hardware characteristics; for information of other channels such as a keyboard and a mouse, a USB and the like, directly sending the information through the FPGA. The method provided by the invention not only can ensure ultrahigh video playing, but also can reduce consumption of physical resources at the same time. The invention mainly aims to solve the problem of poor user desktop experience in a virtualization environment, and provides a method for optimizing virtual desktop transmission based on an FPGA based on an SPICE virtual desktop transmission protocol.

The invention discloses a live broadcast room picture-in-picture playing method, a storage medium, electronic equipment and a system, and relates to the technical field of live broadcast room video playing, and the method comprises the following steps: creating a MediaPlayer manager; acquiring a live video data stream address, creating a MediaPlayer to load a live video data stream for analysis, and initializing an Activity component; creating a first Surface window; when picture-in-picture playing is started, closing the first Surface window, creating a second Surface window, and using the second Surface window for displaying live video data in a picture-in-picture mode; and when the picture-in-picture playing operation is stopped, closing the second Surface window, recreating the first Surface window, and displaying the live video data. According to the invention, the video playing and the video display of the live video are independent, when the live video playing needs picture-in-picture playing, the playing fluency during picture-in-picture playing can be ensured, and a guarantee is provided for the video watching of a user.

The invention discloses a video picture play method, device and equipment and a computer readable storage medium and belongs to the field of multimedia data processing. The method comprises the following steps: creating a virtual canvas according to a display area in a current page, wherein the position of the virtual canvas is matched with the position of the display area, the width of the virtual canvas is equal to that of the display area, and the height of the virtual canvas is equal to that of the display area; and for each frame of picture in a video, extracting the picture from the video and drawing the picture in the virtual canvas to realize play of the video picture, wherein the height of the played picture is equal to the height of the virtual canvas, and the width of the playedpicture is equal to the width of the virtual canvas. The method can realize a video play effect, and does not cause the case of blank area or overflow of the display area in either the horizontal direction or the vertical direction, thereby improving picture play effect and ensuring that the video can be played normally.

The embodiment of the invention provides a program preview method and a smart television, and relates to the display technical field. With the program preview method and the smart television adopted, normal playing of programs can be ensured. The method includes the following steps that: the smart television receives a first instruction inputted by a user; the smart television plays a first program corresponding to a current channel in a main frame window of the smart television according to the first instruction; the smart television receives a second instruction inputted by the user; and the smart television displays a channel list at a predetermined position in the main frame window, and maintains the continuous playing of the first program.

The invention discloses a play control method of a mobile LED (Light Emitting Diode) display system. The method comprises the following steps: obtaining the position information of the LED display system; matching regional information stored in the LED display system in accordance with the position information; and invoking a play scheme corresponding to the matched regional information in the LED display system to play. The mobile LED display system comprises a locating and receiving module, a storage module, a drive module and a control module, wherein the locating and receiving module is used for obtaining the position information of the LED display system by a locating system; the storage module is used for storing a play scheme provided with the regional information; the drive module is used for driving a play content in the play scheme displayed in the LED display screen; and the control module is used for invoking the play scheme corresponding to the regional information matched with the position information in the storage module in accordance with the position information obtained in the locating and receiving module, and transmitting the play scheme to the drive module for drive display; the locating and receiving module, the storage module and the drive module are electrically connected to the control module.

The invention relates to an access device as well as a system and a method for playing sounds by utilizing the access device. The access device comprises a control signal generating module and a control interface; the control signal generating module is used for generating a sound-producing control signal and controlling a sound-producing device to play the sounds; and the control interface is used for sending the sound-producing control signal to the sound-producing device. The system comprises the access device and a network sound-producing control device, wherein, the access device plays the sounds according to network information controlled by the network sound-producing control device or controls the sound-producing device to plays the sounds. The method comprises the steps as follows: network signaling is received, and the sound-producing control signal is generated according to the network signaling; or the sound-producing control signal is generated according to the set trigger of a timer; and the sound-producing control signal drives the sound-producing device to play the sounds. The sound-producing control signal is generated through the control signal generating module, the control signal is sent to the sound-producing device through the control interface, and the access device can be led to open or close the sound-producing device, thereby ensuring that the access device can be used for controlling the sound-producing device to play sound signals.

The invention relates to a video frame caching and forwarding method and device, computer equipment and a computer readable storage medium. The method comprises the following steps: receiving a videoframe of a video sharing terminal; if the received video frame is a key frame, clearing the video frame data in the buffer, storing the key frame in the buffer, and setting pointing positions of a head pointer and a tail pointer of the buffer to point to the key frame; and if the received video frame is not the key frame, moving the pointing position of the tail pointer backwards for one bit, andstoring the received video frame into the pointing position of the tail pointer in the buffer. According to the video frame caching method, the video sharing terminal only needs to send one piece of video frame data to the server for caching and forwarding, so that network congestion caused by sending the video frames to a plurality of video request terminals is avoided. The buffer only stores onekey frame at the same time, so that the real-time performance of the video frame stored by the buffer is ensured, the occupation of cache resources can be reduced, and the caching and forwarding efficiency of the video frame is improved.