Unit 62 Digital Media Production for Interactive Media. Task One. Part Three.

1. By Chelsie Brandrick
Unit 62: Digital Video Production for Interactive Media
September 15th 2016
Task One. Part Three.
Using the Internet as a research tool complete the glossary of terms sheet and uploaded
it to your blog.
Key Term Describe and explain the meaning of each
term. Give examples where appropriate.
Video Formats eg .mov & avi A video file format is a type of file format for
storing digital video data on a computer system.
Video is almost always stored in compressed
form to reduce the file size.
Examples are: AVI, DivX, XVID, MP3, AAC, MP4,
VOB, MP4, M2TS, MOV, 3GP and MKV.
Streaming Streaming lets you watch films and TV online
instantly. You don't download the content, but
you can play it live on your device, such as a
laptop or iPad, via your internet connection.
Examples include Hulu and BBC iPlayer.
File Compression File compression is a data compression method
in which the size of a file is reduced to save
storage space as well as enabling the file to
upload to the internet faster.
Aspect Ratio: 4:3 and 16:9 The aspect ratio of an image describes the
proportional relationship between its width and its
height. It is commonly expressed as two numbers
separated by a colon, as in 16:9. For an x:y
aspect ratio, no matter how big or small the
image is, if the width is divided into x units of
equal length and the height is measured using
this same length unit, the height will be measured

2. By Chelsie Brandrick
to be y units.
If the ratio on your television or device you’re
watching a film on is different to the ratio of the
video then there will be a black box surrounding
the video. This is called letterboxing. If you do not
like seeing the black bars then you can alter the
aspect ratio to either crop or stretch the film to
remove the black borders.
Frame Rates In motion pictures and television, the frame rate
is the number of frames or images that are
projected or displayed per second. Common
frame rates are 24, 25 and 30 frames per
second.