1. What is Pixel Size?

Pixel size refers to the amount of data (in bits) used to represent each pixel in an image or video frame. In the context of MPG (MPEG) video files, understanding pixel size helps in analyzing video quality and compression efficiency.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• File Size — Total size of the image/video file in bits
• Width — Image/video width in pixels
• Height — Image/video height in pixels
• Bit Depth — Number of bits used to represent each color channel

Explanation: The equation calculates how many bits are allocated per pixel based on the total file size and image dimensions.

3. Importance of Pixel Size Calculation

Details: Calculating pixel size helps understand compression ratios, estimate video quality, and optimize storage requirements for video files.

4. Using the Calculator

Tips: Enter file size in bits, width and height in pixels, and bit depth in bits. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between MPG and MPEG?
A: MPG is simply a file extension for MPEG (Moving Picture Experts Group) video files. They refer to the same format.

Q2: How does compression affect pixel size?
A: Compression reduces the effective pixel size by removing redundant information, resulting in smaller file sizes.

Q3: What's a typical pixel size for uncompressed video?
A: For 8-bit RGB (24-bit total), uncompressed pixel size is exactly 24 bits. Compression can reduce this significantly.

Q4: Does this calculation work for all video formats?
A: The basic formula works for uncompressed video. Compressed formats like MPG have variable pixel sizes due to compression.

Q5: How can I get the file size in bits?
A: Multiply the file size in bytes by 8 (since 1 byte = 8 bits).