Abstract: A method for communication includes recording, at a gateway to a network, a generic definition of a service provided to clients of the gateway. The generic definition specifies a first Uniform Resource Identifier (URI) on the network that is associated with the service. At least a first communication between a client and the network is processed at the gateway in order to identify at least a second URI that is referenced from the first URI in a context of the service. Responsively to at least the first communication, an extended definition of the service for the client is automatically created by adding at least the second URI to the generic definition. Use of the service is monitored by applying the extended definition to second communications conveyed by the gateway between the client and the network.

Abstract: A method for communication includes providing an item of media content for streaming in a plurality of versions having different, respective bit rates. The media content is streamed from a server to a client by transmitting a first version of the item over a network at a first bit rate from the server to the client via a server buffer associated with the server and monitoring a fill level of the server buffer while streaming the media content. The server switches to transmitting a second version of the item at a second bit rate, different from the first bit rate, to the client in response to a change in the fill level of the server buffer.

Abstract: A method for communication includes recording, at a gateway to a network, a generic definition of a service provided to clients of the gateway. The generic definition specifies a first Uniform Resource Identifier (URI) on the network that is associated with the service. At least a first communication between a client and the network is processed at the gateway in order to identify at least a second URI that is referenced from the first URI in a context of the service. Responsively to at least the first communication, an extended definition of the service for the client is automatically created by adding at least the second URI to the generic definition. Use of the service is monitored by applying the extended definition to second communications conveyed by the gateway between the client and the network.

Abstract: A method for matching media objects includes receiving a plurality of reference objects, and computing respective reference feature vectors (104, 106) of one or more of the reference image frames (86, 88) in each of the reference objects. Upon receiving a query object, a respective query feature vector (110) of at least one of the query image frames is computed. The reference feature vectors are searched to find one or more candidate objects among the reference objects, such that a respective reference feature vector of one of the reference image frames in each of the one or more candidate objects matches the query feature vector. At least one additional reference image frame is compared to at least one additional query image frame in order to determine that one of the candidate objects is a match for the query object.

Abstract: A method for handling communication data involving identifying available resources for applying compression tasks and estimating a throughput reduction value to be achieved by applying each of a plurality of different compression tasks to a plurality of media items. A cost of applying the plurality of different compression tasks to the plurality of media items is estimated. The method further includes finding an optimization solution that maximizes the throughput reduction value over possible pairs of the compression tasks and the media items, while keeping the cost of the tasks of the solution within the identified available resources and providing instructions to apply compression tasks according to the optimization solution.

Abstract: A computer-implemented method for image adaptation includes accepting a digitally-represented input image and a target size requirement. The input image is modified by optimally determining at least one of a resolution of the input image and a quality of the input image, the quality defining an amount of information allocated to represent each pixel value of the input image, so as to produce a compressed output image meeting the target size requirement.

Abstract: A method for communication includes providing an item of media content for streaming in a plurality of versions having different, respective bit rates. The media content is streamed from a server to a client by transmitting a first version of the item over a network at a first bit rate from the server to the client via a server buffer associated with the server and monitoring a fill level of the server buffer while streaming the media content. The server switches to transmitting a second version of the item at a second bit rate, different from the first bit rate, to the client in response to a change in the fill level of the server buffer.

Abstract: A method for data communications includes conveying from a server to a client a virtual index file, which identifies multiple sequences of media files available for download to the client, including a plurality of the sequences that contain a given item of streaming content for download to the client at a different, respective data rate for each sequence. A selection is received from the client of a sequence among the plurality of the sequences of the media files. Responsively to the selection, the media files in the sequence are created at the respective data rate and are downloaded to the client.

Abstract: A method for content delivery includes obtaining responses from a first plurality of users to a second plurality of items of content that were delivered to the users over a communication network. For each item, a respective vector is created corresponding to the responses of the users to the item. Distances between the items are computed responsively to the vectors. A first item is selected for delivery to a given user based on a previous response of the given user to a second item and to a distance computed between the first and second items responsively to the vectors. Following the delivery of the first item, upon receiving a response to the first item from the given user, the distances computed between the items are updated based on the response to the first item. The updated distances are applied in selecting a further item for delivery to another user.

Abstract: A method for matching media objects includes receiving a plurality of reference objects, and computing respective reference feature vectors (104, 106) of one or more of the reference image frames (86, 88) in each of the reference objects. Upon receiving a query object, a respective query feature vector (110) of at least one of the query image frames is computed. The reference feature vectors are searched to find one or more candidate objects among the reference objects, such that a respective reference feature vector of one of the reference image frames in each of the one or more candidate objects matches the query feature vector. At least one additional reference image frame is compared to at least one additional query image frame in order to determine that one of the candidate objects is a match for the query object.

Abstract: A computer-implemented method is provided, including sending, to a plurality of mobile communication devices, respective messages that include respective message contents that differ from one another and respective human-readable instructions to dial a telephone number common to the messages. A telephone call placed to the telephone number is received from one of the mobile communication devices. One of the messages is identified as most recently sent to the one of the mobile communication devices. A call destination is selected responsively to the most recently sent one of the messages, and the telephone call is routed to the selected call destination. Other embodiments are also described.

Abstract: A method for processing data includes receiving an image sequence including a succession of image frames for encoding in an image sequence file. A target size of the image sequence file is specified. The image sequence file is generated by encoding the succession of the image frames using at least one variable compression parameter, which is adjusted during the encoding responsively to the target size. The image sequence file is outputted for transmission over a communication link.