|   | 21 | === Background Information === | 
          
          
            |   | 22 |  | 
          
          
            |   | 23 | -Anatomy of a Video File:[[BR]] | 
          
          
            |   | 24 |  | 
          
          
            |   | 25 | 1. Container[[BR]] | 
          
          
            |   | 26 | Defined by file extension[[BR]] | 
          
          
            |   | 27 | Holds various audio/video streams[[BR]] | 
          
          
            |   | 28 | Specifies contained encoding scheme[[BR]] | 
          
          
            |   | 29 | Encoding scheme defines algorithm(s) used to encode/decode video[[BR]] | 
          
          
            |   | 30 |  | 
          
          
            |   | 31 | 2. Content stream[[BR]] | 
          
          
            |   | 32 | Contains encoded audio/video streams[[BR]] | 
          
          
            |   | 33 | Limits video use to only specific codecs[[BR]] | 
          
          
            |   | 34 |  | 
          
          
            |   | 35 | What is a CODEC?[[BR]] | 
          
          
            |   | 36 | Encoder-Decoder[[BR]] | 
          
          
            |   | 37 | Algorithms defined in compression standard[[BR]] | 
          
          
            |   | 38 | Can sometimes encode/decode several compression algorithms[[BR]] | 
          
          
            |   | 39 | Popular compression algorithms include JPEG/MPEG family[[BR]] | 
          
          
            |   | 40 |  |