| 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 | |