Posts Tagged ‘Mpeg 2’

Satellite Television Systems – How Live Broadcasts and Transmission is Sent and Received

December 5th, 2009

Basically a satellite broadcast carries both picture and sound signals and they are broadcasted in C-band radio (3.4 Gigahertz [GHz] to 7 GHz). The Ku band frequency (12 GHz to 14 GHz) was introduced to provide superior video and audio to its subscribers. This actually led to the invention of the High-Definition Television (HDTV) with increasing optimal picture and sound quality as the one found in today’s theater and cinemas.

The broadcasts from the satellite transmission are converted into a high-quality, uncompressed digital stream containing a lot of data, and sends it at a speed of 270 megabits per second (Mbps) for each channel. The broadcast data is compressed, so that the satellite would be able to receive it. The system of compression used in the U.S. is the MPEG-2 compressed video format.

The satellite service broadcaster also known as direct broadcast satellite (DBS) providers could now reduce the 270-Mbps stream to about 5 or 10 Mbps, enabling them to transmit about 200 channels, instead of the 30 they could transmit before compression. The signal was scrambled so only paid subscribers could receive it.

This was the turning point towards the huge success the DBS providers now experience. This technique of been able to compressed these channels and decode them on arrival put them ahead of the cable companies. The receiver device at the subscriber end accepts the transmission and converts it into a format that can be viewed on the TV.

The receiver does three basic things. It receives and de-scrambles the broadcasted signals with the help of the decoder. It separates the individual channels as requested by the subscriber by way of the channel selector button on the TV or remote control. It tracks the subscriber pay-per-view usage, the special programs being order, and sends your billing information for this programming to the provider.

Conclusively it noteworthy that you watch these same channels on your PC today paying only small one time fee of about $50 for a satellite TV on PC. With the rapid advancement of satellite TV technology, anyone can watch any TV programs around the world. You can even watch live TV coverage of major sporting events right in the comfort of your own home.

Free Tv on PC, Online TV, live internet TV, watch TV on computer, satellite TV computer, satellite TV for PC, and TV on Your PC are popular slogans on the Internet today heralding this satellite TV on PC for free! for a one time payment, Yes, No monthly or quarterly charges. For more information read ‘watch Satellite TV on PC for free ‘and ‘Watch Internet TV free on your PC’

Be on a safe side read this reviews on most popular satellite TV on PC software.. I vote this satellite TV on PC having tested them and free of Spyware and Adware products




By: Julius ozoh

HDTV Converter – A Beginner’s Guide

November 27th, 2009

2009 marks a big year for television, particularly since many networks will be making the switch to digital broadcasting. Unfortunately, this means you’ll have to buy one of two things to keep on watching your favorite shows – an HD television or an HDTV converter.

Indeed, an HDTV converter will allow you to keep on watching TV like you used to by receiving the digital broadcast signals and converting them into the simpler analog signals – a language that your TV can understand. Keep in mind, though, that HDTV converters only convert broadcast signals and do NOT convert your analog TV into an HDTV. If you have been led to believe this, you have just fallen prey to a popular scam. In fact, it is NOT possible to convert an analog TV into an HDTV.

HDTV converters are not the same as HDTV tuners, although some high-end HDTV tuners also have converter capabilities. HDTV tuners receive HD signals in MPEG-2 encoded packets and decode them so that they can be displayed properly, in their optimal video quality, on the HDTV screen. They are used with HDTVs, although some already have their own built-in tuners, while HDTV converters are used with analog TVs.

Now that you know what HDTV converters do, you can go ahead and start looking for one to buy. You will be faced with several choices, and to find the best one, the most important factor to consider are the features. One such feature is the Analog (RF) Passthrough. This way, you can receive digital signals and still get analog signals from the networks that continue to use them. After all, while many networks will be making the switch to digital broadcasting, some will not, and unless you want to keep on plugging and unplugging your HD converter, getting one with an Analog Passthrough feature is recommended to get both types of broadcast signals.

Another important feature is the S-Video or Super Video Output, which is better than the standard composite video output. This allows you to have sharper and better images on your screen, although keep in mind that these are still nowhere near the excellent pictures displayed on an HDTV.

You can enjoy better audio quality if you choose the right HD converter, too. While your converter will need to convert the digital sounds to analog sounds, these will sound better if the converter has a Stereo Output, which also allows you to connect the converter to a surround sound system. Again, this is nowhere near the amazing audio quality of HDTVs but still better than what you would normally get.

It is also a good idea to get an HDTV converter with a Smart Antenna interface and an Electronic Program Guide (EPG) which allows you to easily flip through your programming options without paying a monthly fee or consulting a TV guide on paper. Different HDTV converters have different EPGs so you have to decide which type you want. Some allow you to make your own personalized program list while others provide comprehensive information about each show. Some HDTV converters have a universal remote control included, too, which can be a plus.

Aside from the features of HDTV converters, look at the brand and the cost, as well. If you have a coupon, your choices will be limited to average, relatively inexpensive ones but you can always save up for a high-end HDTV converter of your own. Afterwards, you might want to start saving up for your own HDTV, so you can truly reap the benefits of the best video and audio quality available today.




By: Chris Malone

How to Convert Mpg to Flv/swf?

November 24th, 2009

How to convert MPG to FLV/SWF?

What is MPG?

Short for M oving P icture E xperts G roup, and pronounced m-peg, a working group of ISO. The term also refers to the family of digital video compression standards and file formats developed by the group. MPEG generally produces better-quality video than competing formats, such as Video for Windows , Indeo and QuickTime . MPEG files can be decoded by special hardware or by software. MPEG achieves high compression rate by storing only the changes from one frame to another, instead of each entire frame. The video information is then encoded using a technique called DCT. MPEG uses a type of lossy compression, since some data is removed. But the diminishment of data is generally imperceptible to the human eye.

There are three major MPEG standards: MPEG-1, MPEG-2 and MPEG-4.

1.The most common implementations of the MPEG-1 standard provide a video resolution of 352-by-240 at 30 frames per second (fps). This produces video quality slightly below the quality of conventional VCR videos.

2.MPEG-2 offers resolutions of 720×480 and 1280×720 at 60 fps, with full CD-quality audio. This is sufficient for all the major TV standards, including NTSC , and even HDTV . MPEG-2 is used by DVD-ROMs . MPEG-2 can compress a 2 hour video into a few gigabytes. While decompressing an MPEG-2 data stream requires only modest computing power, encoding video in MPEG-2 format requires significantly more processing power.

3.MPEG-4 is a graphics and video compression algorithm standard that is based on MPEG-1 and MPEG-2 and Apple QuickTime technology. Wavelet -based MPEG-4 files are smaller than JPEG or QuickTime files, so they are designed to transmit video and images over a narrower bandwidth and can mix video with text, graphics and 2-D and 3-D animation layers. MPEG-4 was standardized in October 1998 in the ISO /IEC document 14496.

What is flv or swf?

FLV is Flash video files, and is basically a stream of images and sound. This means you can stream these from a stream server, and get benefits like the ability to start streaming from anywhere in the file and such processing.SWF files are not streaming media, but complete files with scripts and more. This means they will transfer over the http protocol from the first byte and if you need something in the last end of the file you will have to wait for the whole file to transfer.If you however transfer the FLV file over HTTP the same applies also there. But FLV files can with macromedia media playback be transferred over the streaming protocol in a different fashion.That was a short summary for how you can use the two files differently.FLV can also be used as video inside your animation as any other video. And it offers possibility of masking and so on, which swf have more limits with.

if u wanna add ur videos to website? .flv files are the preferred choice !just cause it will takes smaller size,transmits fast ….flv has been the main video format applied on the website ! so the demand to convert mpeg to flv becomes more and more,Today i’ll take video to flash encoder as an exmple to introduce how to convert mpeg to flv or swf…

Step1 Add source file(.mpeg)



Step 2. Select source file (.mpeg)



Step3. Convert mpeg to flv



Free Download Today >>>




By: Rushrush