Nikolay Abromov blog

Pro MPEG Forum CoP3 or SMPTE 2022 Introduction Pro-MPEG Forum Code of Practice #3 release 2 ( CoP3 ) or SMPTE 2022-2007 , describe how MPEG-2 Transport Streams ( MPEG-2 TS ) should be encapsulated when sent over IP networks. It also describes a forward error correction ( FEC ) mechanism that can be used to correct errors than can occur during the transport. This article will explain how video content can be sent over IP networks and how errors can be corrected using CoP3 FEC. ASI to IP All MPEG-2 transport streams shall be encapsulated in RTP (Real-time Transport Protocol) according to RFC 1889 in conjunction with RFC 2250 . Transport service is provided jointly by UDP (checksum and multiplexing) and RTP (sequencing and time stamping / jitter removing). RTP always uses an even UDP port number. For most streams, the RTP/UDP/IP overhead of 40 bytes per RTP packet is relatively low (for example 3% with a 1 316 byte payload). . IP packets can carry from 1 to 7 TS packets, kn...

There is new version (ver5) of the R&S workbook vol 1. IE completely changed their style in this version of the workbook. The only bad thing I am seeing is they could be more detailed in their explanations but it's only a BETA.

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By Jaymi Heimbuch Posted Thu Jun 26, 2008 9:23am PDT In less than 7 years, Mercedes-Benz plans to ditch petroleum-powered vehicles from its lineup. Focusing on electric, fuel cell, and biofuels, the company is revving up research in alternative fuel sources and efficiency. The German car company has a few new power-trains in the line-up that European journalists have had the opportunity to test out in the Mercedes facility in Spain. One vehicle includes the F700, powered by a DiesOtto engine that combines HCCI and spark ignition to get nearly the same efficiency as diesel, but minus the expensive after-treatment systems. The engine can run on biofuels, and we may have a purchasable vehicle by 2010 -- a year that seems to be popular for the debut of a lot of new alternative fuel car models, making ’08 and ’09 simply thumb-twiddling years for consumers. I don’t know, maybe car makers just like the roundness of “2010.” The company’s next big step will be to launch a Smart electric car w...

Vegetarians can be referred to as true fanatics. On the other hand, they are seriously misled in their beliefs. Practically nobody argues with them, since it is really difficult to convince a vegetarian of his or her self-deception. May be that is the reason why the vegetarian movement develops so actively around the globe and continues to recruit many new members. Vegetarianism proves to be perversion of nature Soured milk – 90% Fresh milk – 83% Beef – 76% Cottage cheese – 75% Compare this data with that concerning vegetable protein: Wheat bread – 52% This is the main reason why dietitians recommend to consume 60 percent of animal protein and 40 percent of vegetable analogue from the daily ration. No vitamins and mineral substances are of any use if our organism does not receive animal protein. Like vegetable protein, they can not be digested without animal protein. Vegetarians , espec...