86 results about "Http live streaming" patented technology

There is provided a system and method for dynamically generated client side streaming playlists. There is provided a method comprising receiving a request to stream a video asset for playback, retrieving, from a network, a video asset playlist corresponding to the video asset and an ad campaign playlist, generating a consolidated video playlist including the video asset playlist and the ad campaign playlist, and processing the consolidated video playlist using a media playback framework to stream a plurality of video files from the network for decoding and output to a display. Discontinuity tags within the video asset playlist may be utilized as insertion points for portions of the ad campaign playlist. The consolidated video playlist may be accessed through a local HTTP web server, advantageously allowing the use of commonly installed media playback framework models such as QuickTime X to trigger adaptive bitrate support through HTTP Live Streaming.

A key delivery mechanism that delivers keys to an OS platform (e.g., iOS platform) devices for decrypting encrypted HTTP live streaming data. An HTTPS URL for a stateless HTTPS service is included in the manifest for an encrypted HTTP live stream obtained by an application (e.g., a browser) on an OS platform device. The URL includes an encrypted key, for example as a query parameter value. The application passes the manifest to the OS. The OS contacts the HTTPS service to obtain the key using the URL indicated in the manifest. Since the encrypted key is a parameter of the URL, the encrypted key is provided to the HTTPS service along with information identifying the content. The HTTPS service decrypts the encrypted key and returns the decrypted key to the OS over HTTPS, thus eliminating the need for a database lookup at the HTTPS service.

The invention discloses a method for realizing live video playback at an HTTP live streaming (HLS) client, which comprises the following steps: sending a program playback request and a program playback time point to a streaming media scheduling gateway media access platform (MAP) by the HLS client; receiving a playlist file dynamically generated by the streaming media scheduling gateway MAP according to the time point and a corresponding index file acquired from a storage module; and requesting video clips from a streaming distribution module according to the playlist file. The invention also discloses a system for realizing the live video playback at the HLS client, which comprises the streaming media scheduling gateway MAP, the streaming distribution module and the storage module. By adopting the method and the system for realizing the live video playback at the HLS client, the video playback can be realized at the HLS client without rewriting a hypertext transport protocol (HTTP) server, thereby, the network construction cost is saved, and the user experience is improved.

A method, apparatus, article of manufacture, and a memory structure for providing advertisements with a media program transmitted to a user device are described. Different versions of a media program and advertisements are generated and segmented, and transmitted to a media player individually, allowing different advertisements to be selected for presentation to users according to user demographics and other factors.

The present invention provides an HLS-based multi-scenario streaming media adaptive live broadcast method. The method is used for performing synchronous adaptive live broadcast based on the HTTP Live Streaming protocol. In a live broadcast process, a server encodes screen data and audio data in real time and packages the data into screen media streams of different quality level, encodes audio data and video data and packages the data into video media streams of the same quality level, and carries out slicing on the screen media streams and the video media streams; and a client adopts a smooth bandwidth prediction method, predicts a real-time available bandwidth of the network based on unit HTTP/TCP throughput, and requires and transmits media code streams matched with the real-time available bandwidth of the network under the overall consideration of the real-time available bandwidth of the network, the size of the buffer, and the importance of the screen media streams and the video media streams. Thus, a screen media stream-first multi-scenario streaming media adaptive live broadcast method is realized.

The invention relates to a method and a system for segmenting streaming media. The method comprises the following steps of: parsing a streaming media ES (Elementary Stream); calculating the optimal sequence value of a streaming media ES segment time stamp according to a time stamp sequence of a obtained random access point and the given expected segment duration, by using a minimum maximum numerical value optimization method, and by taking the minimum maximum value in a difference sequence of each segment duration and the given expected segment duration as an optimization target; and segmenting the streaming media according to the optimal sequence value. According to the method and the system provided by the invention, segment files meeting an HLS (HTTP Live Streaming) protocol can be generated, namely, the different segment durations belonging to a same multimedia stream can be approached as far as possible, thereby lowering the requirement on a buffering mechanism of a terminal player; and simultaneously, the stability of the system operation is ensured, the segment files can be played smoothly, and the quality of viewing experience of users is improved.

Disclosed are a security processing system and method for HLS transmissions. An aspect of the invention provides a content key conversion device connected over a network to a content proxy device configured to provide encryption key information to a content operating device for a content received from a content provider device of an external network. The content key conversion device includes: a reception part that receives a double encryption key of a content from the content proxy device; an interface part that receives key decryption information corresponding to the double encryption key from an encryption key provider device of an external network; a decryption part that decrypts the double encryption key of the content using the key decryption information and thereby converts the double encryption key to an encryption key; and a transmission part that transmits the encryption key converted by the decryption part to the content proxy device.

The invention discloses a method for realizing video on demand seamless disaster tolerance based on HLS (HTTP Live Streaming), belongs to the technical field of video on demand, and solves the problem of delay or incapability of watching due to failure of a streaming server when a user requests video on demand. According to the technical scheme, the method comprises the following steps: constructing a streaming scheduling server group on a server side by using a plurality of servers in a load balancing way, and monitoring health information and load information about all managed streaming servers in real time through a heartbeat mechanism by using the streaming scheduling server group; intercepting all user video on demand requests on a client by using the streaming scheduling server group, recording the user video on demand requests, allocating healthy streaming servers to the client by using the streaming scheduling server group, and providing video streaming services; and when a certain streaming server fails, switching to other streaming servers according to a current user video on demand request by using the streaming scheduling server group, and providing video streaming services for the client by using other streaming servers in order to realize seamless disaster tolerance.

The invention relates to a web-client-based online quick video editing method and system; the system comprises a web client, an HLS (HTTP live streaming) proxy server, a transcoding module, a video material base; the web client is connected with the HLSC proxy server; the HLS proxy server is connected with the video material base through the transcoding module. The web client is used to directly acquire video files form the video material base, the video files of various formats are converted into HLS files through the transcoding module, a Flash player is used to edit the video files on a quick-editing display interface of the web client by configuring HLS proxy service, video lists in an editing queue are serialized and are spliced according to file numbers and setting time points, and editing of the video files is achieved. The web-client-based online quick video editing method and system provide online video reading with no client support, the frequency of a user uploading or downloading videos is reduced, mullite editing is available after single uploading, and through video processing based on HLS protocol, it is possible to acquire precise video positions and improve editing effect.

The invention provides an HLS (HTTP Live Streaming) processing method and device, a server, a terminal and a memory medium. The method comprises the steps of receiving a first index request sent by aplaying client; obtaining a first index file, wherein the first index file comprises first index information and second index information, the first index information is the index information of a generated TS slice file, and the second index information is the index information of a currently generated TS slice file and/or the index infomration of an un-generated TS slice file; and sending the first index file to the playing client, thereby enabling the playing client to obtain a to-be-played TS slice file according to the first index information and the second index information contained inthe first index file. The problem that in the prior art, the delay of a playing image of the playing client is relatively high relative to a practical live broadcast image due to the fact that the server only can return the index information of the generated TS slice file to the playing client is solved.

A method and system are provided for securely storing and retrieving live off-disk media programs. Events delineate media segments, each of which are encrypted with a different key so as to be streamable to a remote device via digital living network alliance (DLNA) or HTTP live streaming protocols. Media segments and identifiers for managing the storage and retrieval of such media segments are compatible with live streaming data structures, obviating the need to re-encrypt data streams.

The present invention provides a low-latency streaming HLS implementation method, the method includes: dynamically generating an independent m3u8 list for each playback request, dynamically and quickly generating a small slice only for this playback request from the media data cached on the server File, in this way the traditional HLS stream processing method. When the user makes a playback request to the edge server, a UUID is automatically assigned to the user as an identification. The edge server starts RTMP back-to-source streaming, quickly starts slicing the RTMP stream data to be played, and generates an independent m3u8 list. The player gets The list and the first 3 slices are ready to play. The present invention is exactly the same as the RTMP stream when the stream is returned to the source, and there is no need to build an HLS slicing system. The stream media and RTMP use the same cluster, which can save a set of equipment groups, N computer rooms and equipment. This method is simple for customers to configure, easy to use, fast to go online, simple domain name CNAME, and can reduce latency. Compared with the 40s latency of traditional HLS, HLS+ can be at the same level as RTMP.

The invention discloses a broadcasting and TV OTT (over the top) integration terminal and an implementing method thereof. The terminal comprises a video ASI signal source, a DCM transcoder, a video coder, a multicast live streaming server, a Live Smooth stream/HLS (HTTP live streaming) server and a set top box. The terminal integrates the RTP multicast technology and the Live Smooth stream/HLS technology, has abundant high-definition broadcasting and TV live streaming resources and is high and stable in video quality; the set top box can automatically distinguish network environments, play high-definition live streaming signals based on RTP multicast in an inner broadcasting and TV network and automatically and selectively play Live Smooth stream/HLS code streams capable of being adapted to the network environments in an outer broadcasting and TV network, live streaming services can be enjoyed nationwide, and the application range is not limited by regions. The terminal can be widely applied to the video field.

The invention discloses an HLS-based (http live streaming based) capacity control method, an HLS-based capacity control service system and an SLB (server load balancing) server. The SLB server is used for receiving an HLS HTTP request from a terminal, redirecting the request to an HLS video server in an HTTP302 manner and returning the specified HLS video server to the terminal; the HLS video server is used for receiving an HTTP short connection request from the terminal, monitoring requesting conditions of terminals in real time and counting online terminal users according to the terminals issuing requests. The HLS-based capacity control service system is applicable to HTTP-based video service systems of m3u8 and ts short connections, and counting of the online users of the HLS video server is achieved.

An embodiment of the invention discloses a stream media file protection method and a digital television terminal. The method includes the steps: adding device information and a digital certificate into an HLS (HTTP live stream) player; transmitting a download request to a server through the HLS player and transmitting the device information and the digital certificate to the server through the HLS player; receiving a stream media file returned by the server and a key file for decoding the stream media file. The returned stream media file and the key file for decoding the stream media file are returned as the server responds to the download request after the device information and the digital certificate pass verification. By the method, safety of the key file and the stream media file can be effectively ensured.

The invention provides an http live streaming (HLS) protocol-based channel switching method and apparatus. The method comprises the following steps: receiving a channel switching instruction; obtaining an m3u8 file of a video clip that corresponds to the channel switching instruction and is broadcasted by a target channel in a live mode; according to the obtained m3u8 file, modifying the currently-broadcasted m3u8 file and writing information of the video clip that corresponds to the channel switching instruction and is broadcasted by a target channel in a live mode into the currently-broadcasted m3u8 file; and according to the modified m3u8 file, downloading and playing the video clip. According to the invention, after the channel switching instruction is received, the currently-broadcasted m3u8 file is modified. The whole process is transparent for the broadcasting device and the broadcasting device does not need to be started again, so that problems of time delay and black screen due to restarting can be solved.

The invention provides an HLS (http live streaming) protocol-based video downloading method and device. The method comprises the following steps: S1, acquiring an m3u8 file for downloading a target video from a cloud server; S2, judging whether a video clip corresponding to a URL (uniform resource locator) to be downloaded in the m3u8 file can be downloaded; if so, returning to S3; otherwise, entering S4; S3, downloading a corresponding video clip according to the URL to be downloaded, and respectively storing the various downloaded video clips at an appointed position in a local disk; S4, taking the next URL of URL to be downloaded as a new URL to be downloaded, and returning to the step S2. By the adoption of the method and the device, the time for waiting an error video clip in the video downloading process is reduced, and the downloading speed is increased.

The present invention discloses an HTTP live streaming (HLS) client-based network stream downloading terminal and optimization method. Through adoption of the system and method, network speed fluctuation falls into the following categories: network speed slow rise, network speed slow fall, network speed soar, and network speed plunge; the network speed change type is identified by comparing instant speed information with a bandwidth of a current audio video stream or comparing the instant speed information with average speed information; a corresponding network stream is selected according to the network speed change type; and finally the network speed of the substantial and sudden change type is optimized. The user experience is improved.

The invention discloses an HLS transmitting method and system by multicast and a terminal, and relates to the field of HLS. The method comprises that an HLR server segments HLR streaming media of different code streams, and writes association between HLR segments and multicast groups into an index file; HLS segment files are downloaded from the HLR server via label information of the index file, and converted into multicast streams via a conversion gateway, and the multicast streams are sent to a terminal; and according to the index file, the terminal obtains multicast addresses, the received multicast streams are converted into the HLS segment files, and the segment files are sent to a player. Thus, HLS videos and audios can be transmitted via a multicast technology, and the cost is reduced greatly; and the adaptive HLS technology can be used effectively to adapt to different network environments, and is especially suitable for a data bearing network, in complex network condition, of a telecommunication service provider.

The invention provides a system and method for implementing dynamic adjustment of an HTTP Live Streaming (HLS) live bit rate number, and relates to the field of internet multimedia. The method comprises the steps: a live source of a head end updates a main m3u8 file by adding or reducing an m3u8 sub-file and a ts fragment including at least one bit rate, thereby implementing addition or reduction of a bit rate number; a server timely requests the main m3u8 file to the live source, detects the change of the bit rate number of the main m3u8 file is detected, and adds or reduces relative m3u8 sub-files and ts fragments relative to the addition or reduction of the bit rate number, so that the main m3u8 file of the server is updated; the terminal timely requests the main m3u8 file from the server, detects the change of the bit rate number of the main m3u8 file, and realizes dynamic updating of self storage bit rates while considering a current bandwidth, thereby implementing. According to the system and method for implementing the dynamic adjustment of the HLS live bit rate number, on the premise of not interrupting server storage and terminal playing, the dynamic adjustment of the HLS live bit rate number is implemented, the playing smoothness of a channel is not influenced, and the optimal utilization rate of disk storage is achieved.

The invention discloses an on-line recording and downloading method and system. The on-line recording and downloading method comprises the steps: acquiring the on-line recording request information for a user, analyzing the on-line recording request information for the user to obtain an HLS (HTTP Live Streaming) address and the recording time for recording an audio and video file; according to the HLS address, acquiring a corresponding M3U8 file; according to the M3U8 file, downloading a corresponding TS (Transport Stream) fragmented file; and according to the recording time, splicing the corresponding TS fragmented files into an overall audio and video file. The on-line recording and downloading method and system can provide a function of recording and downloading on-line audio and video according to the requirement of the user, and can preferably solve the problem that the on-line audio and video, especially the live broadcast audio and video stream cannot be recorded and downloaded, thus greatly improving the user experience degree for the user who cannot watch live broadcast because of various reasons.

The invention provides an HLS (HTTP Live Streaming)-based multimedia file processing method and a server. The method comprises: establishing a tmpfs file system; establishing one or more file folders in the tmpfs file system; transcoding a target multimedia file to one or more slicing files, and storing all of the files into the one or more file folders; aiming at each slicing file, storing file information of a current slicing file to a database; respectively receiving play request commands from at least two clients to generate index files M3U8 corresponding to all of the clients, and returning the generated M3U8 to the corresponding clients; and respectively receiving file request commands from the at least two clients, and acquiring target slicing files from the tmpfs file system according to the file request commands, and providing the target slicing files to the corresponding clients. Through the technical scheme of the method, the user experience is improved.

The invention provides an HLS hotlink protection method and system. The method comprises that when an HTTP request is received, an HTTP request is re-assembled according to the URL of live streaming, a time stamp, a UID of a requesting user and a verification value; and when the re-assembled HTTP request is received, a verification value in the re-assembled HTTP request is verified, a live streaming request is rejected if verification fails, if verification passes, a live streaming list is issued directly according to a format of the live streaming request or whether the only association value associated with the UID of the requesting user exists and is overdue is detected, the live streaming is issued if the only associated value exists and is not overdue, and if the only associated value does not exist or exists but is overdue, the live streaming is issued after that the UID of the requesting user is verified again and the unique associated value is stored. The method and system can prevent the live streaming from stealing effectively, indirect invalid resource requests can be shielded, and the load of the server and the bandwidth is reduced greatly.

The invention discloses an HLS (HTTP Live Streaming) on-line transcoding method and system. The HLS on-line transcoding method comprises the steps: according to the preset configuration, downloading a high code rate HLS audio and video stream and acquiring a corresponding M3U8 file; according to the M3U8 file, decoding the high code rate HLS audio and video stream to obtain the corresponding TS (Transport Stream) data; re-encapsulating the TS data into low code rate TS data and generating a corresponding low code rate M3U8 file; and according to the user requirement, returning the low code rate M3U8 file and the corresponding low code rate TS data. The scheme of the HLS on-line transcoding method and system can realize conversion of 2.5M high code rate HLS live streaming and output HLS live streaming with 3-channel of low code rates (150kbps, 300kbps and 450kbps), so that the user experience degree is greatly improved.