1. What is Video File Size Calculation?

The video file size calculation estimates the storage space required for a video recording based on its bitrate and duration. This is essential for storage planning and bandwidth considerations.

2. How Does the Calculator Work?

The calculator uses the fundamental equation:

Where:

• \( Bitrate \) — Data rate in bits per second (bps)
• \( Duration \) — Recording time in seconds
• \( 8 \) — Conversion factor from bits to bytes

Explanation: The equation calculates the raw data size in bytes, then converts it to more readable units (KB, MB, GB).

3. Importance of File Size Calculation

Details: Accurate file size estimation helps in storage capacity planning, bandwidth requirements for streaming, and determining recording limits on devices.

4. Using the Calculator

Tips: Enter the video bitrate in bits per second (common values range from 1Mbps for SD to 50Mbps for 4K video) and duration in seconds. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between bitrate and file size?
A: Bitrate is the amount of data processed per second, while file size is the total storage space needed for the entire video.

Q2: How does compression affect file size?
A: Compression reduces file size by eliminating redundant data, but this calculator shows the uncompressed size based on bitrate.

Q3: What are typical bitrate values?
A: For H.264: 1-5 Mbps (SD), 5-10 Mbps (HD), 15-50 Mbps (4K). Actual values depend on codec, resolution, and quality settings.

Q4: Why divide by 8 in the formula?
A: There are 8 bits in a byte, and file sizes are typically measured in bytes rather than bits.

Q5: Does audio affect the total file size?
A: Yes, but this calculator assumes the bitrate value already includes both video and audio components.