Mike Assingment

 

Aspect Ratio

Aspect ratio is an image projection attribute that describes the proportional relationship between the width of an image and its height. For example, movies, which are usually shot with a wide-angle lens, have an aspect ratio that is typically 16:9, which means that the width of the image area is almost twice its height. The traditional television and computer display, on the other hand, are designed for an aspect ratio of 1.33:1, which means that the width of the display area is only 1.33 times the height, almost square. The inconsistency between movie and television aspect ratios has generally meant compromising the size or completeness of the image when you watch a movie on a standard TV set. Many newer television displays, such as those using HDTV technology, have a widescreen format with an aspect ratio of 16:9.

 

 

This is a 16:9 shot                      

        

 

This is a 1.33.1

 

 

Composite Video

Composite video, is the analogue waveform that conveys the image data in a conventional National Television Standards Committee television signal. Composite video contains chrominance (hue and saturation) and luminance (brightness) information, along with synchronization and blanking pulses, all together in a single signal. In fast-scan NTSC television, a very high frequency or ultra-high frequency carrier coaxials. Some DVD players and video cassette recorders accommodate composite video input or output through a phono jack, also known as an RCA connector in composite video, interference between the chrominance and luminance information is inevitable, and tends to be worst when the signal is weak. This is why a distant NTSC television station at VHF or UHF, received with an old-fashioned whip antenna, "rabbit ears," or outdoor "aerial" often contains false or fluctuating colours. Compare S-Video.

 

Component Video

Component Video is a video signal that is split into two or more component channels. It stores information in analogue video into three separate signals.

 

HDMI Interface

High Definition Multimedia Interface. Is a hardware that transfer uncompressed video data and compressed digital audio data from HDML compliant source device. It provides interface between audio video source, such as a set top box, DVD player, and video monitor on digital television with a single cable. It also supports high definition video and multi-channel digital audio on a single cable. It support 8 channels which transmit on ATSC HDTV standards. It digitally replaces existing analogue video.

 

PAL

Phase alternating line is a colour coding system for analogue television which is used in broadcast television system. It broadcast at 625-line/50 field (25 frame) per second (5761)

 

NTSC

NTSC is responsible for setting Television and video standards. The NTSC standard for television defines a composite video signal with a refresh rate of 60 half frames (interlaced) per sec each frames contains 525 lines and can contain 16 million different colours. It’s is incompatible with most computer video standard, which generally use RGB video signals. However, you can insert special video adapters into your computer that converts NTSC signals into computer video signals

 

Satellite is a television system that supply television programme using broadcasting signals that relayed from communication satellites signals through a satellite dish. On the other hand, Cable is delivered television programme to pay subscribers, the signals is transmitted through coaxial cables it can also transmitted by light pulses through fibre optic cables. Internet TV is the digital distribution of television content watch on the internet. In addition to this, can watch video through by video streaming technology.  These days you don’t need cable service to keep up with your favourite TV shows, some TV shows are available online. Can also watch internet TV on Netflix and YouTube. Many nations are making big strides toward the implementation of Digital Terrestrial Television. Digital signals provide improved reception quality, ability to broadcast high definition, expanded channels line ups and enhanced multimedia applications such as video on demand and entertainment services.

 

The Advantages of Digital Video Recording and Editing

 

The greatest advantage of a DVR is that it provide you with the flexibility, simple operation, and makes sure you do not miss a moment of your favorite program. Because it’s constant recording, you can pause/rewind live TV and replay favorite moments. Digital editing software allows you to use your computer to edit video and audio. It also allows you to upload video footage into a computer in a process called video capture. Can place clips on a particular point on the timeline, insert a clip between two existing cliffs, shuffle clips around.  You will not miss your favorite programed as the DVR will continue to record even if you rewind or replay scenes. It also allows you to schedule the recording of programs up to two weeks ahead of time.    

 

H.264 is a new video codec standard which can achieve high quality video in relatively low vibrates. It stream video application in real time, at rates ranging from one quarter to half the file size of previous video formats. MPEG.4 this is under development for multimedia content distribution networks, it contains specifications for audio, video and interactivity. It provides good image quality at low data rates but is still in development.

 

In order to undertake good quality video footage you must ensure focus, composition, sound, sound is check to ensure that the sound is there when recording, check must check to ensure that the video quality is good and the white balance is right. In addition to this you do this by check the light and explore the light if is too dark or too light, use a white blank white paper to determine which lighting to when recording. In addition to this, This is done by checking the white balance, the focus, composition and sound need to check the microphone. Also, have to make sure the video is in focus to ensure that you capture good quality recording.