| 1. | How are video images structured? |
| 2. | In analog composite video, what are luma and chroma and how are they carried? |
| 3. | How do Y/C video and component video handle luma and chroma signals differently? |
| 4. | What makes compression useful? |
| 5. | Give the pros and cons of lossy codecs. |
| 6. | Name two wrappers that can carry digital video. |
| 7. | How is audio for video usually carried? |
| 8. | What is the function of timecode? |
| 9. | What does drop-frame timecode do? |
| 1. | As a series of individual frames, which can be further subdivided into two fields. |
| 2. | Luma (brightness) information is represented as a voltage level. Chroma (color) is conveyed by a modulated subcarrier. |
| 3. | Y/C video separates the luma and chroma signals; component video carries the chroma as two separate color-difference signals. |
| 4. | Compression reduces the size of video data by exploiting aspects of the human eye and redundancies in the video information. |
| 5. | Lossy codecs provide more compression, but with reductions in image fidelity. |
| 6. | QuickTime and AVI. |
| 7. | It is carried in a variety of sample rates, bit depths, and track counts. Most professional audio is 48 kHz at 16 bits or greater. |
| 8. | It identifies each video frame with a unique number, allowing frame-accurate operations. |
| 9. | It drops certain timecode numbers to keep timecode time in sync with clock time in NTSC video. |