Video on Demand in .NET

Draw QR Code in .NET Video on Demand
15
Scan QR Code In Visual Studio .NET
Using Barcode Control SDK for .NET Control to generate, create, read, scan barcode image in .NET framework applications.
adopted within the business Thus, proper solutions design to provide the necessary QOS for all available services is critical This design must take into account scalability from early pilots to, potentially, very large and business-critical implementations
Draw QR Code In .NET Framework
Using Barcode drawer for VS .NET Control to generate, create QR Code image in VS .NET applications.
Video on Demand
QR Decoder In Visual Studio .NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
VOD has been a growth area for some time, although much of the actual work has been experimental or has focused on localized pilots As the public infrastructure to support VOD has started to become more widely available through digital delivery and asymmetric technologies such as ADSL (asymmetric digital subscriber line) so has the potential market grown and is beginning to mushroom Performance
Generate Barcode In Visual Studio .NET
Using Barcode printer for Visual Studio .NET Control to generate, create bar code image in Visual Studio .NET applications.
VOD Technical Factors
Recognizing Barcode In .NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in VS .NET applications.
In true VOD, many thousands of users can be viewing the same piece of material, at different points in the material, at the same time This obviously presents a significant challenge for storage if the material is to be delivered directly and dealt with at such a high level Either large cache pools can be used at the servers to smooth the access profile and make the workload more cache-friendly, or the VOD may be limited to allow viewers to access the material in discrete time increments (for example, movies starting every 15 minutes) As the user base becomes more sophisticated, the latter technique will become unacceptable, so the root issue must be addressed by the systems In order to support demand when large numbers of users are calling for the same material, techniques such as load-balancing servers are used This allows for an extra playout server to take on part of the load as demand grows, and then move to another use (that is, supplying different material) when demand falls To accomplish this, it is necessary to be able to connect new servers to a stored copy of material as required or to spawn a new copy very quickly, without having an impact on the existing streams
Paint QR Code In C#.NET
Using Barcode printer for .NET Control to generate, create QR image in .NET framework applications.
The root of VOD is to provide movies or other material to a subscriber base on demand The actual quality of delivery tends not to be very great, using quite highly compressed MPEG streams The performance demands of VOD stem more from the need to address the variability and scalability needs related to the demand for stream provision
QR Code Creator In .NET Framework
Using Barcode drawer for ASP.NET Control to generate, create Denso QR Bar Code image in ASP.NET applications.
AM FL Y
Create QR Code In Visual Basic .NET
Using Barcode maker for Visual Studio .NET Control to generate, create Denso QR Bar Code image in VS .NET applications.
Team-Fly
Bar Code Maker In .NET Framework
Using Barcode creator for VS .NET Control to generate, create bar code image in VS .NET applications.
Managing Media Assets
UPC Code Generation In Visual Studio .NET
Using Barcode generation for .NET Control to generate, create GTIN - 12 image in .NET applications.
Key performance factors, along with the ability to maintain streaming as demand grows, are the ability to access material very rapidly when demanded, either from online or near-line storage, and the ability to respond promptly to user requests and instructions Resilience Resilience is quite important in VOD applications but not so critical as availability Material once ingested into the system must be protected, but this can be done in the form of near-line or offline archiving The ability to retain the appropriate number of copies of heavily used material and to manage the material effectively, as data in an HSM (hierarchical storage management) environment, is more important Availability Availability is critical in VOD applications because the streamed video material represents the primary source of revenue, and customer satisfaction with the service is highly important Video streams must maintain isochronous transfers under normal operation, and background housekeeping tasks such as spawning copies, transferring material to and from archive, or searching and starting new streams must not interfere with the foreground streaming In the event of a failure of a component or storage server, the system must be designed so as to fail the active stream over to an alternate unit without pausing the transfer While it may be acceptable to interrupt the isochronous stream (that is, drop frames) during the failover, the transfer must resume and continue within a very short period Service Service levels with VOD tend to be very clearly defined because of the nature of the material involved Once a stream is initiated to a client, it must be maintained within the performance criteria defined or required for the type of video material being employed Service levels must focus on being able to provide clusters of sufficient load-balancing servers to satisfy peak demands, and systems architectures must incorporate features to support this, as well as to deny service gracefully if the operating parameters for the system are becoming exceeded (for example, by excessive demand)
Make Bar Code In .NET Framework
Using Barcode creator for VS .NET Control to generate, create bar code image in VS .NET applications.
Leitcode Maker In Visual Studio .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create Leitcode image in .NET framework applications.
EAN-13 Generator In C#.NET
Using Barcode maker for Visual Studio .NET Control to generate, create EAN13 image in VS .NET applications.
Draw Code 39 In Visual C#.NET
Using Barcode creator for .NET framework Control to generate, create Code 3/9 image in .NET framework applications.
Recognizing Bar Code In VS .NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
Print UPC Symbol In C#
Using Barcode generator for .NET framework Control to generate, create UPC Code image in VS .NET applications.