PK2301A & PB2301A DMT Quiz 1

What is a Codec?

• A file format containing video files, sound files and meta data

• A program to aid a video editor

• Compress data (and decompress it when playing it back) so that you can store and transmit files with a smaller file size

• A coding procedure for storing audio files in a video capturing device

What is a Container?

• Is also referred as a File Format

• A video storage system for web streaming purposes

• Is a standard on how a video is encoded

• Contains: codecs, sound files and subtitles

Best Video Codecs for Web Streaming Purposes

• MPEG - Dash

• H.264

• H.262

• VP9

This is a video file extension you may commonly see.

• .mov, .avi, .mp4

• .doc, .docx

• .mp3, .wav

• .jpg, .gif, .png

What file type is an MP4?

• Graphic

• Video

• Sound

• Animation

What does Lossy Compression do to files?

• Increases the file size and keeps the same quality

• Eliminates no information at all

• Decreases the file size and keeps the same quality

• Eliminates unnecessary information in a file to reduce file size

What is Lossless Compression?

• No information is lost but file size is increased

• There is no loss of information at all after compression

• Files which have the exact same data after compression

• Compression involves an algorithm

Name one common file format that is LOSSY

• .PSD

• .JPG

• .TIFF

• .BMP

Which is a lossless file format?

• .JPG

• .DOC

• .XLS

• .PSD

Which font format uses an open compressed format used for delivering webpage fonts?

• WOFF

• EOT

• OTF

• TTF