generation loss;

Generation loss refers to the quality and potential increase of file size between subsequent copies of data. Anything that reduces the quality of the representation when copying, and would cause further reduction in quality upon making another copy from the copy, can be considered a form of generation loss.

In video, the video degredation is caused by successive recordings from the original source. It can also refer to the analog duplication of original video recording.

codec;

Codec is a technical name for 'compression/decompression'. It can also stand for 'compressor/decompressor' and 'code/decode'. Essentially, a codec is a computer program that both shrinks large movie files and makes them playable on your computer. Codec programs are required for your media player so that they are playable on your computer. This is useful since large video and music files are difficult to transfer across the Internet quickly. These mathematical codecs were built to encode (shrink) a signal for transmission then decode it for viewing or editing.

They are used in: videoconferencing, streaming media and video editing applications.

video standards;

NTSC

National Television System Committee;

The NTSC format consists of 29.97 interlaced frames of video a second, each consisting of 480 lines of vertical resolution out of a total of 525 (the rest are used for sync, vertical retrace, and other data such as captioning).

PAL

Phase Alternating Line;

PAL describes the way that part of the part of the colour information on the video signal is reversed in phase with each line, which automatically corrects phase errors in the transmission of the signal. The PAL colour system is usually used with a video format that has 625 lines per frame and a refresh rate of 25 frames per second.

SECAM

Sequential Couleur Avec Memoire/Sequential Colour with Memory;

SECAM is an analog television system, using frequency modulation to encode chrominance information. It is so named because it uses memory to store lines of color information, in order to eliminate the color artifacts found on systems using the NTSC standard.

Australia uses the PAL standard.

ieee 1394 port;

An IEEE 1394 port is also known as a FireWire. It is a component originated from Apple which allows connection of peripherals to a computer, such as video cameras. IEEE 1394 ports are like USB ports which are entry points for devices that you want to connect to your computer.

It allows you to get feeds from a high-resolution video camera onto a computer without experiencing issues. It also functions through peer-to-peer network, which means that devices can connect and 'talk' to each other without needing a computer. Because of this, today they have become a standard for high-bandwidth devices.

The following is an image of an IEEE 1394 port:

digital camera & video compression;

rgb;

Red Green Blue;

It is an additive colour model in which the three hues of light - red, green and blue - are added together in various ways so that they may reproduce a broader array of various colours. Essentially, these hues are 'mixed' together to form any colour.

The following is a colour model of RGB:

resolution;

Resolution refers to the sharpness and clarity of an image, or in this case, videos. The resolution is the number of pixels per square inch/dots per inch (dpi). It describes the details a frame holds so the greater the resolution of a frame, the better quality the video is.

The following is a comparison with the same image, each with different resolutions:

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video & movie frame rate;

In terms of video and movie, frame rate is the frequency/rate which each frame is flashed on a screen.

To answer the question, no, videos/movies don't all have the same frame rate. The rate in which the frame flashes varies according to the type/kind of video or movie that is being filmed. In fast-paced action movies or live sports matches, there would be a lot of cuts and varied fps. In slower types of videos/movies, a lower fps can be used. An example could include putting pictures and images together (animation) and changing the frame rate.

frame rate;

Frame rate is the frequency at which an imaging device produces unique consecutive images called frames. Frame rate is used to measure the speed in which a frame stays still.
It is usually expressed as frames per seconds, but in terms of videos, they are expressed as hertz.

advantages of digital video;

Digital video has may advantages due to its ease of use, portability and durability. The advantages of digital video include:
• enhanced learning as moving pictures with sound are more effective than stills
• footage can be updated or changed with ease
• digital video adds a whole dimension to presentations as it can easily be incorporated computer presentations
• with network capabilities, presentations can be distributed easily
• since digital video clips are basically files, they can be integrated into many databases