1 APPLICATION NOTE Matt Allard Karel Rasovsky March 2014 The Grass Valley K2 media platform incorporates an open file system and a number of services and features to make it fast and easy to share content with standard storage devices or with other systems across networks. A look under the hood, this application note illustrates several practical examples of media transfer in K2 systems.
2 INTRODUCTION In a file-based workflow, having the ability to work with a variety of file types from among a wide range of systems is crucial for an efficient operation. The Grass Valley K2 media platform features robust file import and export capabilities to make this possible. K2 MEDIA INTERCHANGE The Grass Valley K2 media platform has to be able to send and receive clips with other systems for archival, transcoding, editing, and so on we refer to this as clip or media interchange. To accommodate diverse media production needs, the K2 media platform offers choices of media file transfer modes: Manually import, export, or move content via user interface on K2, GV STRATUS, K2 Dyno Replay Controller, or other K2-compatible peripheral device Move/transfer content using automation protocols such as VDCP or AMP Automated transfers via content management systems, such as GV STRATUS Watch folder-based automated file imports/exports HotBin import: Files imported from a preconfigured file folder on local or remote file system Specialized HotBin imports for clip formats where clip is represented as a collection of files HotBin export: Clips in a preconfigured clip bin exported to a known file folder Each of the media interchange modes has its strengths and most appropriate use cases. 2
3 EXAMPLE WORKFLOWS: K2 INTERCHANGE SERVICES On K2 systems, generic file transfers can take place to/from local drives available to K2 (e.g., external hard drives, USB drives, or portable NAS), or to/from Windows network shares. The K2 media platform can also act as an server in order to complete tuned network transfers of large files. transfers in the K2 environment are exclusive to formats that do not require random access during import and/or export. When an network transfer is invoked, the server exposes standard operations on K2 clips, such as clip listings, renaming, or deletes. The standard command get represents a clip export, and put represents a clip import. Following are three examples of GV STRATUS/K2 file transfer workflows: Manual import/export of content using K2 AppCenter interface HotBin-based (watch folder) automated file import/export XML file import Manual Import/Export of Files A user can manually import and export single files through K2 AppCenter application interface, or use HotBin services to automate the process. Figure 1 K2 AppCenter user interface. In manual mode, users import or export files through the K2 AppCenter interface, with support for a broad variety of common file types. Source files can be located on a local K2 Summit/K2 Solo system disk drive or a mapped networked drive. The source and destination devices must be in the same domain. The flexibility of the manual file exchange mode is applicable to many different user scenarios. For instance, a reporter may wish to take media material currently on the K2 system and transfer it to a P2 storage card. With the K2 system s ability to export in P2 format (DV, AVC-Intra only), the operation can efficiently be set up, monitored, and completed from the AppCenter user interface. 3
4 K2 SUMMIT 3G PRODUCTION SERVER EXAMPLE WORKFLOWS: K2 INTERCHANGE SERVICES (CONT.) Export/Import HotBin With K2 HotBins service, a user can import or export a variety of supported file or stream types. Through a simple configuration wizard, watch folders (HotBins) can be specified on the K2 s V drive (video drive). This feature can be used with the K2 Solo media server, a standalone K2 Summit production client, a standalone K2 media client, or the K2 media server with the role of primary server on a K2 SAN. For HotBin import, the service is configured on the K2 system and it monitors a watched folder (HotBin). The watched folder is a specified source directory that can be on a standalone K2 system, a K2 media server, a network connected storage array, or on Windows and Mac platforms. When files are placed in the watched folder, the HotBin service automatically imports them via as a clip into the specified destination bin. The destination bin is on the K2 system that receives the imported media, and is within that K2 system s media file system and database. After a specified amount of time, the file is deleted from the HotBin folder. HotBin Import K2 Summit Figure 2 K2 Import HotBin Service. For export HotBin, the service is configured on the K2 system and it monitors a designated watched folder. The watched folder is a K2 storage system bin, configured to export the K2 media in the desired clip wrapper format (GXF, MXF Op-1A, MOV, P2). When K2 clips are moved to the folder, the service validates the media to make sure it has the proper structure for the desired file format. If valid, the service then automatically performs the necessary processing to export the clip via to a designated destination folder. This destination can be to network connected devices such as other K2 systems, PCs, transcoders, or storage arrays such as an archive. The export service and its HotBin must be on a K2 system that hosts the K2 interface. On a standalone K2 system, the service exports the clip from the internal storage or direct-connect media storage of the K2 system. For a K2 media server with role of server, the service exports the clip from the shared media storage of the K2 SAN. In both instances, the HotBin must be on the K2 system s V drive. A variation of the K2 HotBin export function is HotBin file export in P2 format. This workflow automates the process of pushing ingested content out to a destination where users such as editors can readily use it. K2 Content Media Folder v:/default/ Export Hot Bin v:/default/p2-export C:\Media\ Content Clip Audio Video K2 Content Media Folder Source Destination Copy existing clips or record directly into the Export Hot Bin When clips hit the hot bin they are sent to the destination in the selected format P2 format sends a collection of MXF, XML files and folders Figure 3 K2 HotBin service for export in P2 format. 4
5 EXAMPLE WORKFLOWS: K2 INTERCHANGE SERVICES (CONT.) XML Import An extension of the HotBin concept, XML Import is a K2 system software service that permits a customized import function with a userdefined XML file. This enables clips to be stored on a centralized file system with a range and type of audio, video, and data tracks, but import them into a K2 system with just a subset of the video, audio, and data tracks. With this software utility, third parties can determine what is the desired structure of a media file as determined by XML descriptors. This can be very useful for interactions with content management systems and archives. The watched folder is any standard file system directory that can be recognized by the Windows operating system. Media is transferred to the directory using a third-party application. After all the designated media files are transferred to the watched folder, the third-party application then transfers an XML file to the watched folder. This XML file defines the media files and specifies how they are to be assembled to create a K2 clip. When the XML file is completely transferred to the watched folder, the service validates the XML file to make sure it has the proper structure. If the XML file is valid, the service then assumes the necessary processing to create the clip in the K2 media storage. SUMMARY The K2 media platform supports a diversity of media transfer workflows, with manual and automated choices. Combined with broad support for mainstream file formats and networked environments with shared access to content, this makes K2 a versatile and efficient platform for broadcast applications integrated across the nonlinear media production chain. REFERENCES K2 Media Platform System Guide ABOUT GRASS VALLEY The new Grass Valley keeps broadcasters, content owners, and service providers future-ready as they navigate the changing landscape of television. With the most comprehensive collection of workflow solutions in the industry, Grass Valley delivers end-to-end television production and content distribution workflows that enable the efficiency and flexibility broadcasters need to stay competitive today while offering technological foresight they need to keep pace with consumers desires for more content on more devices. Grass Valley, headquartered in Montreal, leverages the collective expertise and depth of the Grass Valley Group and Miranda Technologies, each having been acquired by St. Louis-based Belden Inc. Belden delivers a comprehensive product portfolio designed to meet the mission-critical network infrastructure needs of industrial, enterprise and broadcast markets. With innovative solutions targeted at reliable and secure transmission of rapidly growing amounts of data, audio, and video needed for today s applications, Belden is at the center of the global transformation to a connected world. For more information visit For information about Grass Valley solutions and services, please visit. Join the Conversation at GrassValleyLive on Facebook, Twitter, and YouTube. Copyright 2014 Belden Inc. All rights reserved. Belden, Belden Sending All The Right Signals, Grass Valley, GV STRATUS, K2 Dyno, K2 Summit, K2 Solo, and the Belden logo are trademarks or registered trademarks of Belden Inc. or its affiliated companies in the United States and other jurisdictions. All other tradenames referenced are service marks, trademarks, or registered trademarks of their respective companies. Specifications subject to change without notice. SDP-6026M-1 Pantone + Solid Coated 2623 Process Match C 70 M 100 Y 28 K 16 Process Black C 0 M 0 Y 0 K 100
Double-Take Replication in the VMware Environment: Building DR solutions using Double-Take and VMware Infrastructure and VMware Server Double-Take Software, Inc. 257 Turnpike Road; Suite 210 Southborough,
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