Filmed in live streaming:the news from Sky News Live

By Francesco - Last updated: Sunday, May 1, 2016


In a previous article,always on this blog,I have amply illustrated what is a live streaming or “live streaming”;who,then,recall briefly a concise definition: as the same term, "Streaming" is a data stream that contains audio and video information that is transmitted by a source and which via a data communication network (internet) come to one or more recipients (unicast o multicast). The special feature of a live streaming (live streaming) It is that the data stream is in real time (real time), audio and video are transmitted as a normal television broadcast; the data is not saved in their path but simply transmitted from one point to another of the same electronic network.

The following tools are needed to then do a live streaming: a video recording device, an audio pickup device, an encoder that taking the audio and video streams input creates the digital stream (the streaming) output, a device for connection to the Internet network and a media-server (streaming platform) capable of managing and disseminating such flow (broadcasting).

For the proper functioning of a live streaming video (images + Audio) a transmission protocol is used called RTSP (Real Time Streaming Protocol), this protocol was developed in 1998 dalla Internet Engineering Task Force: RTSP allows you to connect the media-server with client (mainly browser),the latter can send commands to the server to play, or breaks records, so you can monitor real-time playback and delivery of multimedia file distributed by the same server.Sebbene the RTSP protocol is the most famous and still the most widely used, different media-server (for example Youtube) per “fare” live streaming are also using the RTP protocol (Real-time Transport Protocol) and also other ad hoc protocols developed for this type of service.

To see how this exceptional new communication system I propose a live video stream of a note webTV (so they call the television carrier that broadcast online on the Web): TV Sky News 24 English,transmitting 24 hours 24 news and sports events,on the live channel Youtube.Come I said transmission can be easily “piloted” user,using the commands of this toolbar,or by using the commands of the last browser.Per,I just want to report the beautiful property to see in HD 1080p (course for movies broadcast in this format!) sporting events and more,by clicking on the icon “cogwheel” and choosing settings in the format “1080p”,choice which then appear with the inscription in red sull'icona.Segnalo also that the whole is strictly……..FREE!!!!!!……..hello and good fun! Francesco.



 



 

Sky News is a 24-hour international, multi-media news operation based in Britain. It provides non-stop rolling news on television, online, and on a range of mobile devices – as well as delivering a service of national and international radio news to commercial radio stations in the UK. The news service places emphasis on rolling news, including the latest breaking news. Having launched as a 24-hour television news channel in 1989, Sky News has also grown into a digital operation through its website and mobile apps. It is also a content provider for news services in the UK and around the world. John Ryley is the Head of Sky News, being in the role since June 2006.

In addition to the domestic television channel, Sky News also hosts localised versions of the channel: Sky News Australia and Sky News Arabia, and previously operated Sky News Ireland. Sky News is also offered in an international version without the British adverts under the name Sky News International available in Europe, Africa, Asia and the United States. It operates Sky News Radio which provides news for many commercial radio stations in the UK, many of them as the news provider for Independent Radio News (IRN). Sky News also provides content for Yahoo! News, and is available on Apple TV and Roku.

Sky released the high definition version of Sky News on 6 May 2010 to coincide with the 2010 election results. In the build-up to this launch, they have been upgrading their studios and several bureax both in the UK and around the world to be able to broadcast in HD.

From Wikipedia, the free encyclopedia ……..enjoy ..Francesco.

 
 
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With satellite Internet connections: some synthetic clarifications.

By Francesco - Last updated: Wednesday, October 29, 2014

In the previous two articles, namely “INTERNET COL SATELLITE” e “MOBILE INTERNET STATION (PIM) in emergency cases” I explained, albeit in a concise and informative way, come the new satellite technology for Internet, It can be used as part of everyday life and in cases of emergency.
In this short note I would rather clarify,given the various concerns that I have raised in so many who read,what are the essential things and practices that need to know and what is necessary to those who accince to adopt a INTERNET STATION SATELLITE,having need, and such expenses must be met.
It should be said immediately that the necessary equipment is not the same, but it is similar to that required to see the digital television from the satellite,the only substantial difference between the two is that in apparechiature television system the transmission is MONODIRECTIONAL that is, from the satellite to the user / the (in modalità broadcasting o
multicasting,see the articles cited) while in satellite connection for Internet transmission it is WAY: the user not only receives data from the satellite (download) but it itself charging towards the satellite their data (upload) for sharing and this difference from an equipment standpoint led polarizer (or feed) which it is different in the two systems.
So a satellite connection for internet calls: satellite dish,a particular polarizer,satellite modem to a single connection, or, the satellite modem plus a router with hotspot for multiple connections (local area network or LAN both wired and wi-fi) e,mostly, a SUBSCRIPTION with a provider (satellite ISP) which provides the connection and the relative bandwidth required,as in terrestrial connections via cavo.La single device,at user choice,It can be purchased or rented with a monthly cost.

The INTERNET CONNECTION WITH THE SATELLITE you can use ,basically, in two distinct ways, according to the use to which they will do: in INTERNET POINT FIXED (PIF) or MOBILE INTERNET STATION (PIM),in both ways,anyway, the equipment is the same and the subscription as well.

A-INTERNET STATION FIXED (PIF).
This type of station is realized when the location of the connection remains fixed deteminato in a place so permanente.In the satellite dish is typically anchored to the roof of a building,to a small terrace,on a trellis and then connected to dell'utente.Questa modem / router solution it is indicated for those areas that are found in digital divide and who have no hope of uscirne.Questo type of connection is required and an alternative to cable connections (dual-up,adsl,optic fiber),but it is not competitive with them because the subscription costs are of the order of two,three times higher than via cavo.La difference with a station for satellite TV is minimal:changes the polarizer,It should be said ,anyway. that you can double the feed station can be used for both internet connection that for digital TV.
the TRACKING al satellite (tracking) it is done only once when dell'installazione.Per be able to operate the apparatus must be connected to the home electric network for the power supply of the modem / router,no need for the polarizer / i because that feeds itself with the system satellite.Inizializzato,operation for the user is such and such a cable connection:It creates an internet connection,in this case satellite, on your operating system (Linux,Mac,Window) and when connecting,He had assigned an IP (dynamic or preferably STATIC) We are ready to use all the services that the network offers:http,ftp,voip,p2p,web.posta etc.…..) with a max speed of 20 Mb in download e 6 Mb in upload (currently it does not offer more speed technology,performance of these, far removed from 1Gb to download the optical fiber with which you can download for example films 7-8 Gb in less than 10 seconds!!!).
B-MOBILE INTERNET STATION (PIM).
This type of station is used when one needs to move from one place to another on a given territory,and have an internet connection in a given place,for various reasons,only for short periods(a few hours or a few days).The satellite kit and the ISP subscription are the same fixed location,what changes is COME It is mounted throughout the terminal and by the fact essential that for each new location must always be remade POINTING al satellite (vary the coordinates!).In practice, this position can be achieved in two ways:a-pointing with operator, b-motorized pointing and depends on how much you want to spend first and timeliness (in the sense of the time it spent before becoming operational) with which you want to make the connection:
in-the aiming with the operator
With this solution the apparatus once “transported” somehow the place where you want to make the connection
It is mounted on a base and the attendant operator,which must be well trained and prepared for this task,HAND proceeds to the aiming of satellite.In this context it is ready to connect to the network in 15-20 minutes from what it has come on luogo.Deve be guaranteed in some way the power of the modem / router.
This solution is used mainly in occasions fairs,conferences,gatherings to ensure a multiple connection to the participants and organizers,via wi-fi,up to a distance of 700-1000 meters from the station,(It depends only used dall'hotspot),and that in this case becomes “bridgehead” for LAN downstream.
b-motorized pointing
All the satellite kit is mounted on a vector (auto,van,cross-country vehicle,bus,half relief, etc.) with which it promptly reaches the place to connect,came to the area with commands from inside the car and prepared software is “riser” the dish and made tracking,the latter all motorized and automatico.Il time required to be operational,in this case it does not go beyond the 5-7 posto.L'alimentazione minutes of arrival on the modem / router and all motorized apparatus exploits the available energy carrier (mainly the battery).
This solution is indispensable for situations where the timeliness and urgency of internet connection are priority,for example in cases of televising live streaming,filming of sporting events,or in cases of natural disasters where the via traditional cable networks are not available.
COST OF SATELLITE CONNECTION
The basic kit consists of satellite dish,polarizer and modem / router, usually it comes to free rental from the provider that provides satellite connectivity,while wanting to buy, the cost fluctuates around 500 euro.
Obviously this expenditure is lump sum in the sense that one time is paid,while it is quite another subscription with provider.Attualmente this type of subscription in Italy is provided by the two companies EUTELSAT O ASTRA,directly or through companies controllate.La connection purchased is usually supplied to VOLUME O FLAT.A volume you buy a package of 10 O 25 O 50 GB usable in thirty days,while providing flat there are no limits neither consumer nor time,obviously with a higher cost compared to that in volume.Ultimamente EUTELSAT It is proposing a new option called “for consumption” for occasional use,second box,boats,video conferencing ecc..con a daily cost of 3 euro,and flat in 24 ore, and you pay only on days of actual use, and unlimited number of connessioni.Occorre also point out that the flat option 30 days is also provided for the modem / router a STATIC IP,which is equivalent to say that the connection in addition to performing functions of “bridgehead” for lan networks (wi-fi and cable) can perform server functions for corporate networks is common in everyday use,Also as an alternative to cable,but especially ensuring the connection in replacement in emergency cases.
Broadly speaking these are the basic costs for all locations,except for the mobile station to motorized pointing instead to which must be added the costs for the preparation of the vector which are of the order of the four / five thousand euro.
CONCLUSIONS
Satellite connections to the Internet are not at all competitive with a good ADSL,even there is no comparison with the optical fiber,both in terms of performance and costs,but instead become indispensable in lands that are in the digital divide,or in cases of natural disasters, where all other technologies have suffered a temporary or permanent collapse and require a reliable connection,timely and above all independent.

THE RADIO SYSTEM D-STAR AND THE INTERNET STATION SATELLITE
In a previous article on my blog I presented the basic aspects of the telecommunications system based on digital radio system:the PROTOCOL D-STAR,so for those who wish to learn this new technology refer you to this article where you can also find the appropriate links for more and more approfondimenti.In here recall briefly what it is and how it works.
In a nutshell DIGITAL COMMUNICATION SYSTEM using the PROTOCOL D-STAR consists of a D-STAR repeater DECK alone performs the task of "repeater" (memo REPEATER),It located in any part of the territory (the difference is in the type of emission,compared to FM repeater), a computer with SERVER functions in any way connected to the INTERNET (dual-ap,adsl,optic fiber,SATELLITE CONNECTION),equipped with a specific software that allows it to interface to the D-STAR repeater bridge and which carries out,also and especially, the task to route all users working in telephone and data connected to the D-STAR repeater place, towards a "D-STAR network server" ,Scattered on the planet,able to manage and to connect all users operating in this ambiente.Questi servers are called in jargon GATEWAY (door,entrance,passage,entry)precisely because, "Routing" the catchment.

A user when using a D-STAR equipment (portable radio, or a fixed location), send, together with CARRIER VOICE, DATA also containing its own unique user ID,through the server and internet,It is then recorded on the worldwide network D-STAR,thus it is creating a database shared among all D-STAR server installed on the planet (type DNS server in the TCP-IP protocol) and end-users,for example the user IZ7ATL (Caller ID), It can communicate with the ID-CALL IZ7ATL (the called ID), since the network itself will,automatically, to route its request for communication.
As described, matches,neither more nor less, the operation of the GSM / GPRS network( Network cellular)we use with sim,or to the Internet (HTTP), They are downmixed when the different object of trasferimento.Il packages concept is the same change only the means to communicate.

The two operating modes of the D-STAR system are the: DV MODE(stands for Digital Voice) the A MODE DD (acronym for Digital Data).

The first is designed to transmit voice and data simultaneously, In fact, during a simple "conversation" you can also be sent from the GPS DATA, that will enable each, the caller and the called, to identify the geographic location of the interlocutor using the data GEOINFO (Latitude and Longitude,the speed values ​​if the move,references to time and that the date and time and possible links to virtual maps where we also have an attached OS).It is possible to send,also, short text messages or video sequences, bearing in mind that the speed is rather low,circa 960 bps.

DD mode instead is used for transmission and reception of data EXCLUSIVE, allowing the use of a very similar bandwidth to the ISDN network the Internet (rete internet in dual-up) or 128 Kbps.Tutto what allows you to use a traditional ESSENTIAL SERVICES Internet network (in this case using the D-STAR protocol “leaning” to the TCP / IP protocol,in practice, the D-STAR services are packaged in binary files)), Which: email,textual web pages,dati GPS in RealTime,transmission of files (texts,images,data ..),ftp connections,low-resolution streaming.. etc, with the difference that between two stations instead be a single and simple Internet network, There is an extensive network of D-STAR servers that deal with route data and to connect the two transceivers,also very distant from each other (opposite sides of the planet).
From the above it said it is clear that for the D-STAR system is critical,order to function, that the territory there is the D-STAR repeater,whether or FIXED MOBILE,to which you must hook the user radio.
The repeaters can be located on the territory of two types: the REPEATER IN VHF / UHF and the so-called D-STAR REFLECTOR,over agi HotSpot to which I will mention dopo.La difference between the repeaters and the reflector,basically it consists in this:
We can think of a reflector D-STAR as a repeater that has no RF ports but has, in exchange, a good connection to the INTERNET. Generally the RF repeaters are placed on hills or mountains where not always’ possible to obtain Internet connection but that in exchange offer a good RF coverage range.
Unlike, The Reflector can exist wherever there is a good internet connection and in fact usually are installed in large data management centers that are always connected to the Internet via high capacity lines’ bandwidth.
This abundant capacity’ band reflector allows to manage connections with many different repeaters at the same time, whereas a VHF / UHF repeater and’ able to maintain connections with maximum a couple of other repeaters when set in the mode’ interconnection. This feature makes the reflector a great tool to connect with each other a multiplicity’ repeaters, in addition to allowing access to the D-STAR network also to individual utenti.Esistono two types of D-STAR network: an official, managed by ICOM and using repeaters ICOM (fixed)and REFLECTOR and the other type mainly HOT SPOT OPEN SOURCE, generally furniture,although there are versions Hot Spot owners (Icom).

MAP REPEATER / REFLECTOR / HOTSPOT FIXED D-STAR IN ITALY (see photos).

GLI HOT SPOT D-STAR
A hot spot is an access point to a D-STAR repeater or a Reflector.L’ Hot Spot should not be confused with a D-STAR repeater although sometimes some features may be similar, such as frequencies TX / RX separate.
L’ Hot Spot, unlike the D-STAR repeaters real, normally it does not handle the routing callsign (call routing:send a call to a specific ID not knowing a priori on that repeater is located) and node routing ( transfer the call to a specific remote repeater without knowing who and 'listening, a classic general call) and other functions of the D-STAR protocol.

Gli Hot Spot open source.
The hot spot in this configuration necessarily require apparatus a UP4DAR card.The UP4DAR card is a universal platform for DIGITAL RADIO broadcasts of Radio Amateurs.
can’ It is connected to the data port 9600 bps of an analog transceiver VHF / UHF radio to turn it into D-STAR.Le dellla UP4DAR card available functions depend on the management software that is open source and available for free.
The UP4DAR card can be used as a repeater, come hotspot, or as a card to convert a simple analog radio in the D-STAR.
Example:Setting up a hotspot with UP4DAR card connected to a reflector.Chi si collega all’ Hot Spot will listen and transmit on all repeaters that are connected to Reflector.Apparecchiature used :
UP4DAR card;Analog radio:RX / TX Yaesu FT-897D;D-Star Digital Radio:RX / TX Icom ID-51E.
The board UP4DAR, connected to the Yaesu FT-897D, It is set so hotspot and connected via Web (internet) a Reflector.
The radio Yaesu FT-897D is tuned to an open simplex frequency (no shift),modo POINT,menu #73) speed 9600 bps.
Digital radio Icom in DV mode is tuned to the same frequency simplex the Yaesu.
With this configuration using digital radio Icom D-STAR, you can make QSO on Reflector.
L’ speaker connected to UP4DAR tab allows, to those who are close to the board, to listen to QSO passing on’ Hotspot .
The software can be used for calibration and testing of the device are available for both Windows and for Linux, and for both in architecture 32 e 64 bit.

CONCLUSIONS
Hot Spots D-Star open source can provide,an alternative and very well, D-Star radio communications in those parts of the territory which are not covered by a repeater D-Star.La their potential stems primarily from the fact that they can be installed in the area with workstations or FIXED MOBILE and then, users who work in the area they covered,as well as communicate with each other in simplex mode (direct) can “go out” outside and reach the first D-Star repeater useful for communicating.
The stations FIXED generally are placed inside the houses,sheds,office and stay on H24, the card is connected UP4DAR,via ethernet cable or directly to the router or PC,to feed it uses the electricity network,so you get a permanent seat D-Star (standalone) with stable and low consumption energetico.L'area connection you can travel depends on the power of D-Star radio sets as well as the power of portable digital radio D-Star as well as the morphology of the terrain.
Hot Spots in FURNITURE stations They are mounted on a carrier (auto,van,cross-country vehicle,bus,half relief,boats etc.).The equipment in the D-STAR system is identical to the fixed station, and also the operation is the same,the only thing that completely changes is the type of INTERNET CONNECTION.Here too, the card is connected UP4DAR,via ethernet cable or directly to the modem / router (in this case satellite) or pc (Incidentally it should be said that the state does not exist D-Star posssono cards that interface with the Internet outside of the ethernet cable, for example via WI-FI as the cameras for satellite television broadcasting)and internet access is provided by a INTERNET STATION SATELLITE type MOBILE,in other words, the D-STAR radio fixed is mounted on the PIM carrier and connected to it with ethernet cable.
From the above said,although im very succinctly,It can see ALL the potential of this new technology, that results from the coupling of the D-STAR RADIO SYSTEM with SATELLITE MOBILE INTERNET STATION (PIM),equipped with energy autonomy:the result is,Meanwhile, a mobile station with low cost and low maintenance, that you can take anywhere,and as for the time serving,but the most important thing is that this DIGITAL COMMUNICATION SYSTEM can ensure VOICE and DATA,as well as the SERVICES offered by internet,in FULL AUTONOMY, even in cases,mostly, in which, all network services,for any reason,They are no longer usable,just think to emergencies and relief to people and things.

 
 
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