Abstract: A method for identifying a misidentified study can utilize a set of photographs captured at substantially the same time as a corresponding set of medical images. The method can include determining similarities between the photographs through machine learning models and determining that a misidentified study exists when the similarity between the photographs fails to satisfy a threshold similarity.

Abstract: The present disclosure is generally directed to media systems configured to receive and play live media content. In particular, methods and systems are provided for a multi-screen content playback experience for time shifted live stream content. Systems and methods are provided herein for generating for display a catch-up video (e.g., a segment of a live stream stored as URLs on a local device during the time the live stream was interrupted) in a picture-in-picture (PIP) window, and generating the PIP catch-up window and the live window for simultaneous display.

Abstract: A data mining method, system, and non-transitory computer readable medium, include defining a set of filter constraints as a filter function for clustering users' private records of data of a private domain, selecting a subset of users' public records of data from a filtered set of data from a public domain that is common with the users' private records of data, and creating a data file including the matched user of the private domain to the public records of the user of the private domain, where the set of the filter constraints comprises a function that captures the subset of the users' public records of data who are of interest to the private domain, and only performs data mining with that set of information from the public domain.

Abstract: In some implementations, a system may establish a video call between a first device associated with a first user and a second device associated with a second user of a communications platform. The system may present a video interface for the video call, the video interface comprising a first video stream generated by the first device of the first user and a second video stream generated by the second device associated with the second user. The system may present a first set of image augmentations selected by the communications platform in the video interface, the first set of video augmentations being selectable by the first user for augmentation of the first video stream generated by the first user device. The system may identify a second set of image augmentations used by a further set of users of the communications platform.

Abstract: Both wireless communication and communications via a cable modem are supported between a network node and a customer premises. Alternative communications links provide redundancy and the possibility to take advantage of the different types of links capacity to provide a level of service that would not be possible using a single communications link to a customer premises. In various embodiments a network node, such as a cable network node hubsite, has an optical connection to the Internet or another communications network and provides network access to one or a plurality of customer premises. The network node includes a wireless access point, e.g., pole mounted base station, as well as one or more cable modem interfaces to thereby allow for both wireless and cable modem based communications. This allows for packets of different applications to traverse different links and/or to switch between links in the event of maintenance or reliability issues.

Abstract: A method for virtual live streaming, a device, and a storage medium thereof are provided. The method includes: polling a broadcasting task list, and triggering a start event for a virtual live streaming task in the broadcasting task list in a case that the virtual live streaming task meets a preset start condition, where the broadcasting task list is to maintain a state of a live streaming task on a network live streaming platform; creating a live streaming room in response to the start event, and associating the live streaming room with a virtual anchor account to which the virtual live streaming task belongs; generating a stream-pushing address, calling a streaming media resource pre-configured for the virtual live streaming task and pushing the streaming media resource to the stream-pushing address; and adding an access portal of the live streaming room into a live streaming room list.

Abstract: Provided is a video reception method performed by a video reception apparatus including a display. The video reception method includes: receiving a reception signal multiplexed from video data and audio data; outputting, as first transfer characteristics information, transfer characteristics obtained by demultiplexing the reception signal; outputting, as second transfer characteristics information, transfer characteristics obtained by decoding the video data, the second transfer characteristics information being information for specifying, at frame accuracy, a transfer function corresponding to a luminance dynamic range of the video data; and displaying the video data while controlling a luminance dynamic range of the display at frame accuracy according to the second transfer characteristics information.

Abstract: Described are systems and methods for automating the creation of advertisements, such as video advertisements. For example, an advertiser may utilize a self-service user interface to provide digital assets to an advertisement creation system that may utilize those digital assets to generate an advertisement for the advertiser, without further input from the advertiser. In one example, an advertiser may provide a video file, select a template for the advertisement, select a genre, provide one or more call to action text inputs, select a background color for call to action displays, and/or select an outro color theme for an outro or end card of the advertisement. The advertisement creation system may then utilize that information and, without further input from the advertiser, generate one or more jobs for execution by computing resources, such as remote computing resources to generate an advertisement based on the provided content.

Abstract: Methods and apparatus to credit streaming activity using domain level bandwidth information are disclosed. An example apparatus includes a packet collector to collect data packets via a network interface, and a traffic analyzer to determine domain data of the data packets and associate bandwidth usage values with the domain data to define bandwidth usage data by domain. The apparatus also includes a bandwidth usage data storage to store the associated bandwidth usage data by domain.

Abstract: The user can respond to a media segment wherein the media segment may be associated with a schedulable event. Software on the device can then schedule the event into an electronic calendar system, and/or may use data associated with the media segment. At the appropriate time, the electronic calendar system may notify the user of the scheduled broadcast and/or event.

Abstract: Systems and methods are described for a media guidance application (e.g., implemented on a user device) that manages user subscriptions to content sources by modifying content source bundles to tailor them toward user preferences.

Abstract: Provided is a broadcasting control apparatus configured to generate a system time for broadcasting control, the system time being synchronized with a reference time in accordance with a predetermined time protocol, and configured to correct, when leap second adjustment information indicating that leap second adjustment is scheduled to be completed at a first time in the reference time is received, the system time by a correction amount depending on a time length D over a correction period having the time length D from a second time earlier than the first time, the time length D being set such that a correction amount per second of the system time is equal to or less than a cycle corresponding to an inverse of a video frame rate.

Abstract: A method of processing data in a digital receiving apparatus, the method including receiving a broadcast signal including low level signaling data, wherein the low level signaling data is carried via a specific data pipe (DP), wherein the low level signaling data includes service category information, the service category information is used to identify an AV service, an audio only service or an ESG (electronic service guide) service, wherein the low level signaling data is used to provide bootstrap information that allows the receiving apparatus to discover at least one service layer signaling information, wherein the bootstrap information includes URL data for a first service layer signaling information when the first service layer signaling information is transmitted via a broadband network, and wherein the bootstrap information includes a destination user datagram protocol (UDP) port number and a destination internet protocol (IP) address for a second service layer signaling information when the second se

Abstract: Systems and methods for facilitating cross device resumable media content consumption. In an aspect, a system includes an update component that receives a media statistics update where the media statistics update includes information identifying an account, media content identification information, and a first playback time position associated with media content. A monitoring component is also included that identifies when the account accesses the media content associated with the media content identification information. A resume component is also included that plays back the media content at the first playback time position in response to identifying an access of the media content associated with the account.

Abstract: In one aspect, a method is for use in connection with a content-modification system that includes a content-distribution system and a content-presentation device.

Abstract: This application provides a data transmission method. The method includes: An electronic device first establishes an MPTCP connection to an application server, where the MPTCP connection includes two TCP connections. Then, the electronic device receives indication information from an application server, where the indication information includes a type identifier and a parameter. When the type identifier indicates a low data transmission delay requirement, the electronic device receives, in a first time period after the electronic device receives the indication information, the data stream by using a first TCP connection. When an accumulated data amount actually received by the electronic device in the first time period is less than a product of the parameter and duration corresponding to the first time period, the electronic device receives the data stream in a second time period by using both the two TCP connections.

Abstract: Virtual application and desktop delivery may be optimized by supplying application metadata and user intent to the device between a client and a server hosting resources for the delivery. The data packets used to deliver the virtual application or desktop may be also tagged with references to the application. By supplying the metadata and tagging packets with the metadata, an intermediary network device may provide streams of data packets at the target QoS. In addition, the device may apply network resource allocation rules (e.g., firewalls and QoS configuration) for redirected content retrieved by the client out of band relative to a virtual channel such as the Internet. The network resource allocation rules may differ for different types of resources accessed. The device may also control a delivery agent on the server to modify communication sessions established through the virtual channels based on network conditions.

Abstract: Methods and apparatus to calibrate media ratings based on return path data are disclosed. An apparatus includes a processor and memory including instructions that, when executed, cause the processor to: determine an initial rating for the media provided in a first geographic area based on return path data (RPD) tuning information obtained from RPD devices in subscriber households in the first geographic area; determine a first panelist rating for the media provided in a second geographic area based on first panel tuning information obtained from first metering devices in a first subset of panelist households in the second geographic area; determine a nonsubscriber calibration factor based on the first panelist rating; and determine a final rating for the media in the first geographic area by modifying the initial rating based on the nonsubscriber calibration factor.

Abstract: A distribution device for delivering a selected viewport stream of virtual reality (VR) data to each of a plurality of client devices, comprising a processor configured for receiving a plurality of extended viewport streams of a VR video file each comprising a sequence of extended field of view (EFOV) frames created for a respective one of a plurality of overlapping segments constituting a sphere defined in the VR video file and delivering a selected one of the plurality of extended viewport streams to each of a plurality of client devices by performing the following for each of the client devices in each of a plurality of iterations: (1) receiving a current orientation data of the respective client device; (2) selecting one of the plurality of extended viewport streams according to the current orientation data; and (3) transmitting the selected extended viewport stream to the respective client device.

Abstract: A method and an apparatus are disclosed for providing navigation instructions. The method may include receiving, from a user apparatus, a first location and a destination location; calculating a first route from the first location to the destination location; generating, for a predetermined time period, a first set of maneuvering data corresponding to the first route, the first set of maneuvering data comprising playback cues based on a predicted user apparatus location; transmitting the first set of maneuvering data to the user apparatus; receiving, from the user apparatus, a second location; generating, for a subsequent predetermined time period, a second set of maneuvering data, the second set of maneuvering data comprising playback cues based on a further predicted user apparatus location; calculating an update set of maneuvering data based on the first and second set of maneuvering data; and transmitting the update set of maneuvering data to the user apparatus.

Abstract: A streaming device may request and download multi-layer video segments based on a number of factors including the artistic interest associated with the video segments and/or the status of a buffer area managed by the streaming device. The multi-layer segments may be coded using scalable coding techniques or a combination of scalable coding and simulcast coding techniques by which each of the video segments may be coded into one or more representations of different qualities and/or bitrates. When requesting the multi-layer segments, the streaming device may ensure that the fullness of the buffer area falls between a buffer underflow threshold and a backfilling threshold under various network conditions. The streaming device may estimate the available network bandwidth in order to facilitate the scheduling decisions. The streaming device may consider the artistic interest associated with the video segments during scheduling and may give priority to those segments with higher artistic interest.

Abstract: A method for distributing video content from a server to a plurality of media devices is provided allowing adaptive bit rate encoding to better utilize bandwidth. The method includes: determining, by the server, the bandwidth to allocate to each of the plurality of media devices using a hypertext transfer protocol-based live streaming client model or a need parameter vector, refining this determination by utilizing client feedback regarding client buffer level and playback state, client hardware capabilities, and client internally measured download rate, and providing the allocated bandwidth to each of the plurality of media devices; wherein the video content is transmitted in a plurality of segments from the server, and wherein each segment is transmitted at a bitrate that may vary from segment to segment.

Abstract: Technologies for streaming multi-user broadcasts include a broadcast management server configured to receive multimedia data captured of a user. The broadcast management server streams a multimedia broadcast including the multimedia data captured of the user to other users. Additionally, the broadcast management server is configured to receive a request to participate in the streamed multimedia broadcast from another user. Multimedia data captured of the other user is received in response to a determination that the request to participate in the streamed multimedia broadcast is accepted. The broadcast management server merges the multimedia data captured of the first and second users to generate a merged multimedia broadcast, which is streamed to other users. The broadcast management server also generates a broadcast feed for users. The broadcast feed includes streaming multimedia broadcasts and streaming merged multimedia broadcasts corresponding to other users. Other embodiments are described and claimed.

Abstract: A transmission device is disclosed. The transmission device comprises a signal generation unit for generating a broadcast signal including a service, and a transmission unit for transmitting the broadcast signal through at least one radio frequency (RF) channel. A broadcast stream transmitted through the RF channel includes signaling for the service, the signaling for the service including information indicating whether the service is transmitted through a plurality of RF channels, and information indicating whether the broadcast stream transmitted through the RF channel contains an essential portion of the service.

Abstract: A conferencing system is configured, for an interval of time, to receive time-dependent input data from a first user, the time-dependent input data obtained via a capturing device. The conferencing system is configured to receive profile data for the first user, analyze the time-dependent input data and the profile data for the first user using a computer-based model to obtain at least one classifier score for a classifier of a reaction of the first user, and transmit the at least one classifier score for the classifier to a second user.

Abstract: A log file including prediction information specifying a local advertisement content allocation amount and a general advertisement content allocation amount over a predetermined duration of time is received. A chronological schedule designating media content spots and advertising spots for the predetermined duration of time is also received. It is determined that a sold amount of local advertisement content during a particular time period, which is less than the predetermined duration of time, is insufficient to fill the local allocation during that time period, A portion of the local allocation is reallocated to the general allocation for the particular time period, while leaving the local and general allocation amounts unchanged over the predetermined duration of time. A program log is generated in accordance with the prediction information and the reallocating.

Abstract: This present disclosure describes a system and methods for integrated multistreaming of media with graphical overlays. At least one method includes a multistream service and graphical overlays hosted by a server infrastructure; a user configuring both the multistream service and graphical overlays on the server infrastructure; a user playing video games on a computer, using broadcasting software to authenticate with the server infrastructure; the broadcasting software capturing video of the user's computer session; the software retrieving the user's custom graphical overlay from the server infrastructure, encoding the video signal and graphical overlay; the software using the same aforementioned authentication to upload the encoded video to a multistream service, and the multistream service streaming the user's encoded video simultaneously to multiple streaming services.

Abstract: The invention concerns a method for transmitting a piece of digital content consisting of a plurality of data packets to a mobile terminal (10), via a communication network (20), in which a management device (30) implements the obtaining (E11, E23, F8, F33), from the communication network, of at least one piece of information related to the bandwidth available on at least one link of the network to the mobile terminal, the selection (E12, E24, F10, F34), depending on said piece of information related to the bandwidth, of an encoding rate (RES) to use for at least one of said data packets, and the sending (E14, E25, F16, F38), to a device intended to provide the digital content (41), of a message indicating the selected encoding rate, in order to instruct the equipment intended to provide the digital content (41) to transmit, to the mobile terminal, at least one of the data packets, encoded with the selected encoding rate, on one of the network links.

Abstract: A system and method capable of transporting phase and frequency synchronization over traditional IP/MPLS networks, making end terminals requiring signals received from satellites to have phase and frequency synchronisation obsolete. The method includes switching of PPS signal by DTM protocol, transmission of PPS signal to the other end of network through a virtual circuit, switching the transmitted PPS signal again by DTM protocol, conversion of PPS signal arriving at the other end to ToD and PTP data and transmission thereof to a terminal component. The system includes a transmitter mechanism converting ToD and PTP data into PPS signal on one end of the network and then switching by DTM protocol, a receiver mechanism switching PPS signal at DTM protocol on the other end of the network and converting into ToD and PTP data and transmitting to the end component, and a virtual circuit providing carriage of PPS signal.

Abstract: In some embodiments, one or more wireless stations operate to configure direct communication with neighboring mobile stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. Embodiments of the disclosure relate to a mechanism for a device to perform selective synchronization (or cluster merging) with one or more neighboring peer devices.

Abstract: Techniques for providing live content at different quality levels to a user device include advertising content availability at multiple quality levels for selection by the user device, receiving a quality level selection from the user device, wherein the quality level selection matches one of the advertised multiple quality levels, determining whether the received quality level selection differs from a currently used quality level, when it is determined that the received quality level selection is different from the currently used quality level, reconfiguring a transcoder to transcode the live content to only the received quality level, and updating a metafile to include a first quality level at a first bitrate lower than a bitrate for the received quality level selection and a second quality level at a second bitrate higher than the bitrate for the received quality level selection.

Abstract: The invention relates to a method for transmitting from a server to a client, encoded media data corresponding to a projection of a wide view of a scene, the method comprising: Encapsulating the encoded data into tracks, Wherein information is provided for signaling that the client needs to parse other encoded data to display at least the encoded data encapsulated in a given track.

Abstract: A drive recorder according to an embodiment of the present disclosure includes: an imaging unit that is mounted on a vehicle and captures a video of the surroundings of the vehicle; a video recording unit that has, recorded therein, video data captured; a network connecting unit that receives accident information including a time and date when an accident occurred and a place where the accident occurred; and a video retrieving unit that determines whether any video data captured in a predetermined time period and in a predetermined region are available in the video data recorded in the video recording unit, the predetermined time period including the time and date when the accident occurred, the predetermined region including the place where the accident occurred.

Abstract: Apparatus and methods for managing content delivery in a packetized network. In one embodiment, the network provide content to a plurality of clients via a plurality of nodes and origin points, and resources are discreetly represented (e.g., with IP addresses, such as those afforded under the IPv6 protocol) to allows for direct advertisement of resources. Exemplary solutions described herein further advantageously leverage extant architectures and protocols (such as BGP), and make use of a common control plane, which can be utilized for example by different content delivery network (CDN) operators and different delivery components to advertise resources. Internally within a given CDN, increased granularity of resource addressing and advertisement may provide benefits including: (i) resource affinity; (ii) resource-level balancing; (iii) dynamic resource scoping; and (iv) “zero-touch” provisioning and resource relocation.

Abstract: Methods, apparatuses and systems may provide for a video transmitter that generates a primary bitstream based on a video signal, wherein the primary bitstream is encoded with subsampled chroma information, and detects a static condition with respect to the video signal. Additionally, a plurality of auxiliary bitstreams may be generated, in response to the static condition, based on the video signal. Each of the plurality of auxiliary bitstreams may be encoded with full resolution chroma information. In one example, a video receiver may detect that the auxiliary bitstreams are associated with the primary bitstream, decode the primary bitstream and the plurality of auxiliary bitstreams to obtain luma information and the full resolution chroma information, and multiplex the luma information with the full resolution chroma information.

Abstract: Concepts and technologies are disclosed herein for providing streaming video from mobile computing nodes. A request for streaming video captured by a mobile computing node can be received at a computer including a processor that executes a controller. The request can include a parameter associated with the streaming video. The computer can initiate transmission of an inquiry message to two or more mobile computing nodes and receive inquiry message responses from the mobile computing nodes that include the mobile computing node. The inquiry message responses can indicate that the mobile computing nodes can satisfy the parameter. The computer can create a list of the mobile computing nodes that can satisfy the parameter and provide the list to the requestor. The computer can receive a selection of the mobile computing node, and initiate delivery of a video stream to the requestor.

Abstract: Methods and apparatus for delivering content to a user so as to optimize and enhance the “experience” of the content. In one embodiment, an optimization and monitoring entity (OME) is used which determines, evaluates, and provides notification and/or recommendation of alternative content delivery platforms which are available to a user. The OME receives requests for content forwarded from a content server containing information identifying requesting devices and/or subscriber accounts. The OME examines the capabilities of the registered devices, and identifies/recommends alternative devices based on e.g., video/audio quality, picture size, bandwidth availability, and/or any other additional capabilities of the client devices. A notification is then sent to the client devices indicating which of the user's devices may receive the content alternatively, or in addition to, the requesting device. The notifications may be interactive, allowing the user to select one or more of the devices for delivery.

Abstract: According to an example aspect of the present invention, there is provided a method, comprising: receiving an input ordered set of transactions after a genesis block or a preceding compressed block in a chain of blocks, generating a compressed block on the basis of the input ordered set of transactions, wherein processing of the compressed block results to an equivalent final state as processing of the input ordered set of transactions, and providing the compressed block to a distributed network for establishing a new chain epoch and replacing a set of uncompressed blocks associated with the input ordered set of transactions.

Abstract: In one aspect, a method includes identifying an upcoming content modification opportunity on a channel. The method also includes responsive to identifying the upcoming content modification opportunity on the channel, identifying a group of multiple content-presentation devices tuned to the channel. The method also includes for each content-presentation device in the identified group, determining a respective probability of that content-presentation device successfully performing a respective content-modification operation in connection with the identified upcoming content modification opportunity on the channel. The method also includes using at least the determined probabilities as a basis to select, from among the content-presentation devices in the identified group, a subgroup of content-presentation devices.

Abstract: The system may include a headend and/or a hub that includes a processor that provides signals to consumer premises devices. The headend and/or the hub is configured with a headend configuration table defining broadcast video services for a desired distribution of broadcast video services, where configurating the headend configuration table is performed based upon data from a digital video configuration service that is independent of the broadcast video services.

Abstract: In one embodiment, a device detects oscillations in a path metric for a network path between violating a service level agreement for an online application and not violating the service level agreement for the online application. The device classifies the oscillations as near-boundary or wild, based on degrees to which the path metric violated a threshold of the service level agreement. The device provides data regarding the oscillations to a user interface that includes an indication as to whether the oscillations are near-boundary or wild. The device adjusts the threshold of the service level agreement based in part on feedback from the user interface, when the oscillations are near-boundary.

Abstract: A method for decoding a first bitstream in which each of pictures has been encoded with being split into a plurality of tiles, each tile comprised of one or more coding tree units, the method comprises receiving the first bitstream which includes tile split information and area information, generating a second bitstream to be decoded, by extracting, from the first bitstream, only encoded data corresponding to the area defined by the area information which is included in the header of the first bitstream, and modifying syntax elements in the first bitstream using the reference position, and the width and the height from the reference position included in the area information, and outputting the second bitstream to thereby decode the extracted encoded data.

Abstract: A control apparatus includes an optical wavelength change control unit that specifies, in response to a request to change a wavelength band of a first optical wavelength path used by a first transmission apparatus and a second transmission apparatus to a wavelength band of a second optical wavelength path, a first route between routers which is affected by the request and a service which uses the first route and that specifies a second route between the routers which detours the specified service; a router control unit that transmits a request to detour the specified service to the second route, to a start-point router and an end-point router on the first route; and a transmission apparatus control unit that transmits a request to change the wavelength band of the first optical wavelength path to the wavelength band of the second optical wavelength path, to the first transmission apparatus and the second transmission apparatus.

Abstract: Servicing database requests using subsets of canonicalized tables including maintaining a canonical table repository of canonicalized tables, wherein each canonicalized table is a transformed version of a table previously retrieved from a database; receiving, from a client computing system, a request for a table from the database; generating a description of a canonical version of the requested table; determining that the canonical version of the requested table is a subset of a canonicalized table in the canonical table repository; and in response to determining that the canonical version of the requested table is a subset of the canonicalized table in the canonical table repository: transforming the canonicalized table containing a superset of the canonical version of the requested table based on the received request for the table; and providing, to the client computing system, the transformed canonicalized table containing the superset of the canonical version of the requested table.

Abstract: The present technology relates to a transmission apparatus, a transmission method, a reception apparatus, and a reception method that enable channel selection information and time information to be transmitted effectively. A transmission apparatus acquires channel selection information for selecting a service and time information used for synchronizations on a transmission side and a reception side, generates, as a physical layer frame constituted of a preamble and a data portion, the physical layer frame in which specific information including at least one of the channel selection information and the time information is arranged at a head of the data portion right after the preamble, and transmits the physical layer frame as digital broadcast signals. The present technology is applicable to IP packet broadcasting, for example.

Abstract: Identification means of an information processing system identifies, based on an action history of each of a plurality of users, a plurality of data items having a degree of action equal to or more than a predetermined degree. First information acquisition means acquires, based on the action history of each user, first information indicating relevance between the respective data items identified by the identification means. Output means outputs, when details of each of the plurality of data items are input, second information indicating relevance between the respective data items based on a predetermined parameter. Setting means sets the parameter based on the details of each data item identified by the identification means and the first information.

Abstract: Systems and methods for displaying primary content without any overlaid secondary content, and instead transmitting the secondary content to the viewer as a message through another communication channel. For example, a news banner is removed from display on a viewer's television, and the text of the news banner is encapsulated in a message sent to the viewer's primary social media account. In this manner, the viewer may watch the primary content uninterrupted by the secondary content, and is thus presented with fewer distractions and a potentially more enjoyable viewing experience.

Abstract: In some embodiments, a method sends a first instance of a media presentation description to a client device for a media presentation. The first instance of the media presentation description includes location information for a patch update. The location information for the patch update is received in a request from the client device. The method uses the location information to identify the patch update to the media presentation description and sends a second instance of the media presentation description that includes update information from the patch update to update a stored version of the media presentation description for the client device.

Abstract: The present teaching relates to exploring a personal interest space based on a decision tree. In one example, information related to a personal interest space associated with a user is obtained. The personal interest space includes at least one channel of content that the user is interested in. A decision tree created based on information related to a plurality of users with respect to a plurality of channels of content is obtained. Each node of the decision tree is associated with at least one of the plurality of channels of content. A first node of the decision tree is identified based on the information related to the personal interest space associated with the user. A question for the user in connection with the first node of the decision tree is determined. An answer to the question is received from the user. A second node of the decision tree is identified based on the answer.

Abstract: A video audio transmission system, transmission method, sending device, and reception device capable of avoiding buffer overflow and buffer depletion in a decoding device and realizing Group of Pictures (GOP) synchronization in encoding devices by eliminating clock deviation among devices. In the video audio transmission system, the sending devices supply clocks generated from common time point information to cameras as genlock signals. The reception devices supply clocks generated from the common time point information to the decoding devices as genlock signals. Therefore, clock deviation between the devices can be eliminated, and the buffer overflow and the buffer depletion in the decoding device can be avoided. Frame periods of video signals output by a plurality of dispersed cameras can be aligned, and reliable GOP synchronization can be realized by the encoding devices on a latter stage with respect to the cameras.