To calculate how many GB are needed for 3 hours of footage if a 15-second file is 100 MB, follow these steps:

Step 1: Calculate how many 15-second segments are in 3 hours

• $3 \, \text{hours} = 3 \times 60 \times 60 = 10,800 \, \text{seconds}$
• Each segment is 15 seconds, so: $\frac{10,800 \, \text{seconds}}{15 \, \text{seconds/segment}} = 720 \, \text{segments}$

Step 2: Calculate the total file size in MB

• Each 15-second segment is 100 MB, so: $720 \, \text{segments} \times 100 \, \text{MB/segment} = 72,000 \, \text{MB}$

Step 3: Convert MB to GB

• $1 \, \text{GB} = 1,024 \, \text{MB}$, so: $\frac{72,000 \, \text{MB}}{1,024 \, \text{MB/GB}} \approx 70.31 \, \text{GB}$

Final Answer:

3 hours of footage will require approximately 70.31 GB of storage.

Would you like further clarification or additional examples?

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Here are some related questions for further exploration:

1. How can you optimize file sizes for video storage?
2. What is the difference between MB and MiB in storage calculations?
3. How does changing the resolution or bitrate affect the file size of video footage?
4. How much storage would be required for 6 hours of footage at the same rate?
5. What tools can compress video files without significantly reducing quality?

Tip: Always check the bitrate and resolution when planning storage for video files, as they directly impact file size.