Abstract: Among other things, a video is downloaded to a mobile device. The video includes a TV show and commercials embedded within the TV show. The video is stored persistently on the mobile device. At least part of the video is played on the mobile device while the device is offline. Metadata is stored on the mobile device that indicates an expiry applicable to at least one of the commercials embedded in the video. The mobile device performs an action at a time related to the expiry.

Abstract: Among other things, in controlling a download of one or more files from a server to a mobile device, account is taken of at least two of: an urgency of the file, the existence of a user-indicated preference about the download, a power status of the mobile device, and a network connectivity status of the mobile device.

Abstract: Among other things, two or more files are processed that each represent, in a streaming format, a portion of a media item. A file download facility at a user device can download the two or more processed files as if they were a single file.

Abstract: Among other things, a video item is downloaded to a mobile device from a digital video recorder. The video item includes a video program and commercials that have been previously embedded within the video item. Before, during, or after the download of the video item, information is reported from the mobile device to a server about the video item, from which the server can select a set of substitute commercials. One or more of these substitute commercials are downloaded from the server. When the video item is presented on the mobile device, the mobile device replaces at least one of the original commercials that has been previously embedded within the video item by a substitute commercial that has been downloaded to the mobile device.

Abstract: Among other things, a video item is downloaded to a mobile device from a digital video recorder. The video item includes a video program and commercials that have been previously embedded within the video item. Before, during, or after the download of the video item, information is reported from the mobile device to a server about the video item, from which the server can select a set of substitute commercials. One or more of these substitute commercials are downloaded from the server. When the video item is presented on the mobile device, the mobile device replaces at least one of the original commercials that has been previously embedded within the video item by a substitute commercial that has been downloaded to the mobile device.

Abstract: Among other things, videos and commercials are downloaded to a mobile device for storage on the mobile device and later playout on the mobile device. The downloading includes downloading of metadata associated with the commercials and based on which the mobile device can select commercials for insertion into videos being played back to the user of the mobile device. The commercials to be downloaded are selected based on one or a combination of any two or more of the location of the user, the type of mobile device, and personally-identifiable information about a user of the mobile device.

Abstract: Among other features, notification is presented on a mobile device to a user to advise the user of the availability of a media object that (a) has been received from a server and stored on the mobile device without the user having been aware of the receipt or storage, or (b) has newly become available for streaming from the server to the mobile device.

Abstract: Among other things, videos and commercials are downloaded to a mobile device for storage on the mobile device and later playout on the mobile device. The downloading includes downloading of metadata associated with the commercials and based on which the mobile device can select commercials for insertion into videos being played back to the user of the mobile device. The commercials to be downloaded are selected based on one or a combination of any two or more of the location of the user, the type of mobile device, and personally-identifiable information about a user of the mobile device.

Abstract: Among other things, videos and commercials are downloaded to a mobile device for storage on the mobile device and later playout on the mobile device. The downloading includes downloading of metadata associated with the commercials and based on which the mobile device can select commercials for insertion into videos being played back to the user of the mobile device. The commercials to be downloaded are selected based on one or a combination of any two or more of the location of the user, the type of mobile device, and personally-identifiable information about a user of the mobile device.

Abstract: Among other things, a set of videos and commercials are downloaded for storage on a mobile device and later playout of each of the videos or commercials on the mobile device. The videos and the commercials are downloaded in an order such that one or more of the commercials may be downloaded at a time or times before, interleaved between, after, or any combination of two or more of those, the time or times when one or more of the videos are downloaded.

Abstract: Among other things, videos and commercials are downloaded to a mobile device for storage on the mobile device and later playout on the mobile device. The downloading includes downloading of metadata associated with the commercials and based on which the mobile device can select commercials for insertion into videos being played back to the user of the mobile device. The commercials to be downloaded are selected based on one or a combination of any two or more of the location of the user, the type of mobile device, and personally-identifiable information about a user of the mobile device.

Abstract: Among other things, videos and commercials are downloaded to a mobile device for storage on the mobile device and later playout on the mobile device. The downloading includes downloading of metadata associated with the commercials and based on which the mobile device can select commercials for insertion into videos being played back to the user of the mobile device. The commercials to be downloaded are selected based on one or a combination of any two or more of the location of the user, the type of mobile device, and personally-identifiable information about a user of the mobile device.

Abstract: Among other features, notification is presented on a mobile device to a user to advise the user of the availability of a media object that (a) has been received from a server and stored on the mobile device without the user having been aware of the receipt or storage, or (b) has newly become available for streaming from the server to the mobile device.

Abstract: Among other features, notification is presented on a mobile device to a user to advise the user of the availability of a media object that (a) has been received from a server and stored on the mobile device without the user having been aware of the receipt or storage, or (b) has newly become available for streaming from the server to the mobile device.

Abstract: Among other things, videos and commercials are downloaded to a mobile device for storage on the mobile device and later playout on the mobile device. The downloading includes downloading of metadata associated with the commercials and based on which the mobile device can select commercials for insertion into videos being played back to the user of the mobile device. The commercials to be downloaded are selected based on one or a combination of any two or more of the location of the user, the type of mobile device, and personally-identifiable information about a user of the mobile device.

Abstract: Among other things, a video item is downloaded to a mobile device from a digital video recorder. The video item includes a video program and commercials that have been previously embedded within the video item. Before, during, or after the download of the video item, information is reported from the mobile device to a server about the video item, from which the server can select a set of substitute commercials. One or more of these substitute commercials are downloaded from the server. When the video item is presented on the mobile device, the mobile device replaces at least one of the original commercials that has been previously embedded within the video item by a substitute commercial that has been downloaded to the mobile device.

Abstract: Among other things, two or more versions of at least portions of a video that has been captured at a mobile device are uploaded from the mobile device to a remote server. Each of the two or more versions requires a different amount of communication resources. The order of uploading of the respective versions is determined based on a size of the version.

Abstract: Among other features, one aspect of the subject matter described in this specification can be implemented in methods that include, from a wireless handheld device, automatically transferring to another location a media object captured on the wireless handheld device without requiring a user of the wireless handheld device to initiate the transfer of the media object, and regulating the transfer in response to information about a condition of the wireless handheld device.

Abstract: Among other things, in controlling a download of one or more files from a server to a mobile device, account is taken of at least two of: an urgency of the file, the existence of a user-indicated preference about the download, a power status of the mobile device, and a network connectivity status of the mobile device.

Abstract: Among other things, at a local device connected to a network, updating, of a mobile device that is nearby the local device, from one state to another state, is assisted. The states of the mobile device are associated with digital content. The updating is based on information at a server that is accessible through the network from the local device. The updating is assisted without requiring execution on the local device of code that is persistent on the local device.