Storing+video+data

Introduction
There are a number of different formats which are used for storing video data. In this course we will focus on 2 video formats:
 * Audio Video Interleave (AVI)
 * Moving Pictures Experts Group (MPEG)

Task
Research the way in which AVI works. In your own words, explain how AVI works. Your answer should include: **Higher**
 * Int 2**
 * audio synchronisation (Hint: AVI interleaves the audio and frames of video)
 * uncompressed AVI [|(][|Read this article])
 * audio synchronisation (Hint: AVI interleaves the audio and frames of video)
 * uncompressed AVI [|(][|Read this article])
 * AVI codecs (DivX, XviD, WMV)

Task
Research the way in which MPEG works. In your own words, explain how MPEG works. Your answer should include: **Int 2**
 * overview of MPEG ([|Read this article])
 * lossy compression ([|Read this article])

**Higher**
 * overview of MPEG ([|Read this article])
 * lossy compression ([|Read this article])
 * key frames / i-frames. (Hint, for these the complete JPEG frame is stored. In subsequent frames, the rest of the data consists of predictions or actual changes since the last key frame).

In both cases, your answer should also make reference to the following image