Video Editing Export and Delivery 1 — Questions and Answers
Question 1: What does 'codec' stand for in video production?
- Color Optimization and Digital Encoding Compression
- Coder-Decoder (Correct answer)
- Compressed Output Digital Editing Code
- Content Optimization and Delivery Engine Control
Correct answer: Coder-Decoder
Codec stands for Coder-Decoder, a software algorithm that compresses video data for storage/transmission and decompresses it for playback.
Question 2: What is the difference between 'lossy' and 'lossless' compression?
- Lossy is faster; lossless is slower
- Lossy permanently discards data to reduce file size; lossless reduces file size without data loss (Correct answer)
- Lossless is used for web; lossy for broadcast
- There is no difference in practice
Correct answer: Lossy permanently discards data to reduce file size; lossless reduces file size without data loss
Lossy compression permanently removes data to achieve smaller file sizes (e.g., H.264), while lossless compression reduces size without discarding any data (e.g., ProRes 4444).
Question 3: What does 'H.264' refer to in video delivery?
- A professional camera model
- A widely-used video compression codec for web and broadcast delivery (Correct answer)
- A color space standard for HDR
- An audio codec for streaming
Correct answer: A widely-used video compression codec for web and broadcast delivery
H.264 (AVC) is one of the most widely used video compression codecs, offering high quality at relatively small file sizes for streaming, web, and broadcast.
Question 4: What is 'bit rate' in video encoding?
- The number of bits per frame in a video
- The amount of data processed per second, affecting video quality and file size (Correct answer)
- The bit depth of the color information
- The number of audio bits in a video file
Correct answer: The amount of data processed per second, affecting video quality and file size
Bit rate is the amount of data (bits) processed per second in a video file — higher bit rates mean better quality but larger file sizes.
Question 5: What aspect ratio is used for standard widescreen HD and 4K video?
- 4:3
- 16:9 (Correct answer)
- 21:9
- 1:1
Correct answer: 16:9
16:9 is the standard widescreen aspect ratio used for HD and 4K television, streaming, and most modern digital video.
Question 6: What is 'frame rate' and what does 24fps represent?
- The resolution of each frame; 24 megapixels per frame
- The number of still images displayed per second; 24fps mimics the look of cinema film (Correct answer)
- The encoding speed; 24 frames are processed per second
- The refresh rate of the monitor; 24Hz display speed
Correct answer: The number of still images displayed per second; 24fps mimics the look of cinema film
Frame rate is the number of still images (frames) displayed per second; 24fps is the standard cinematic frame rate that gives film its characteristic motion look.
Video Editing Export and Delivery 1
What does 'codec' stand for in video production?