#Media transfer protocol porting kit update#
#Media transfer protocol porting kit windows#

#Media transfer protocol porting kit windows#

MTPZ, the Zune Extension to MTP specifically denies access to files until authentication has been processed, which is only possible using Windows Media Player 10 or higher. Nothing specific of this nature is in the core standard but the possibility is allowed via Vendor extensions (whereas USB mass-storage does not cater for such extensions). In particular, MTP Initiators may have to provide passwords and other information to unlock files, or otherwise enable restricted capabilities. In case the device maintains a database/index of the content of the disk, MTP saves the cost of re-scanning the entire disk every time the content is modified.Īdditionally, the MTP allows MTP Initiators to identify the specific capabilities of device(s) with respect to file formats and functionality.

The storage media is not affected by failed transfers. In this way, MTP works like a transactional file system - either the entire file is written/read or nothing. MTP and PTP specifically overcome this issue by making the unit of managed storage a local file rather than an entire (possibly very large) unit of mass storage at the block level. In practice, therefore, when a USB host computer has mounted an MSC partition, it assumes absolute control of the storage, which then may not be safely modified by the device without risk of data corruption until the host computer has severed the connection. In other words, the USB mass storage class is designed to give a host computer undifferentiated access to bulk mass storage, such as compact flash, rather than to a file system, which might be safely shared with the target device (except for specific files which the host might be modifying/accessing). Ī main reason for using MTP rather than for example the USB mass-storage device class (MSC) is that the latter operates at the granularity of a mass storage device block (usually in practice, a FAT block), rather than at the logical file level. The host connecting to an MTP device is called an MTP Initiator whereas the device itself is an MTP Responder.

#Media transfer protocol porting kit update#

Windows 7 and Windows Vista with the Platform Update for Windows Vista also support MTP over Bluetooth. The protocol was originally implemented for use across USB but extended for use across TCP/IP and Bluetooth. The main purpose of this protocol is to facilitate the transfer of media files and associated metadata to/from devices, the management of media files and configuration data on these devices, and to allow the remote control of these devices.

3.1 Support for legacy Windows versions.