Understanding Multimedia File Sizes

The video revisits multimedia topics, focusing on calculating file sizes for images, audio, and video. It emphasizes understanding the process rather than obtaining a final number, especially in exams where calculators are not allowed. The tutorial explains the difference between calculating and evaluating, discusses compression, and provides a detailed example of calculating an uncompressed image's file size using resolution and bit depth.

Why is it important to focus on the calculation process rather than the final number in multimedia topics?

• Because the final number is always the same.

• To understand the process and logic behind the calculations.

• Because the final number is not important.

• To avoid using calculators in exams.

Which of the following is NOT a type of multimedia file size discussed?

• Video

• Text

• Image

• Audio

What is the primary focus when calculating the size of multimedia files?

• The uncompressed size

• The color depth

• The type of compression used

• The file format

What are the two key factors needed to calculate the size of an uncompressed image?

• Bit depth and file format

• Resolution and file format

• Bit depth and resolution

• Compression type and resolution

How many colors can a 24-bit image display?

• 32.7 million

• 1 million

• 16.7 million

• 256

What is the resolution of the iPad screen used in the example calculation?

• 1280 by 720

• 2048 by 1536

• 1920 by 1080

• 2560 by 1440

What is the first step in converting bits to kilobytes?

• Divide by 1024

• Multiply by 8

• Divide by 8

• Multiply by 1024

Why do uncompressed image sizes seem large compared to compressed formats like JPEG?

• Because they are stored in a different format

• Because they use a different color model

• Because they are not reduced by compression

• Because they have more pixels

What is the final calculated size of the uncompressed bitmap image in the example?

• 9 terabytes

• 9 megabytes

• 9 kilobytes

• 9 gigabytes

What is the significance of understanding uncompressed file sizes?

• To reduce file size

• To improve image quality

• To estimate storage requirements accurately

• To choose the best file format