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A decimal 1TB drive can hold roughly 185 to 278 hours of 1080p video at the example bitrates of 12 Mbps and 8 Mbps, respectively. These are estimates, not a fixed capacity: 1080p describes resolution, not how much data each second of video uses. For a quick estimate, divide 2,222 by the video’s total bitrate in megabits per second (Mbps).
Estimate hours from bitrate
For a drive sold as 1TB, the useful rule of thumb is:
Hours ≈ 2,222 ÷ total bitrate in Mbps
Use the total bitrate when you know it, including both video and audio. The calculation assumes a decimal terabyte of 1,000,000,000,000 bytes and a constant bitrate. It gives an approximate duration before file-system overhead, metadata, and any unavailable or reserved space.
| Total bitrate | Estimated video per decimal 1TB |
|---|---|
| 5 Mbps | About 444 hours |
| 8 Mbps | About 278 hours |
| 10 Mbps | About 222 hours |
| 12 Mbps | About 185 hours |
| 15 Mbps | About 148 hours |
These figures are arithmetic estimates, not measurements of recorded files. Actual recording duration depends on the average bitrate and can vary when a video uses variable bitrate encoding.
#1 Best Overall
- Easily store and access 1TB to content on the go with the Seagate Portable Drive, a USB external hard drive.Specific uses: Personal
- Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop. Reformatting may be required for Mac
- To get set up, connect the portable hard drive to a computer for automatic recognition no software required
- This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
- The available storage capacity may vary.
Why 1080p does not determine recording time
1080p tells you the image resolution, but not the amount of data used to encode each second. Bitrate can differ with frame rate, codec, image detail, and encoding settings. Audio also takes storage, and YouTube notes that its recommended audio bitrate is not tied to video resolution.
As an illustrative reference, YouTube recommends 8 Mbps for 1080p SDR uploads at standard frame rates (24, 25, or 30 fps) and 12 Mbps at high frame rates (48, 50, or 60 fps). Those recommendations imply about 278 and 185 hours per decimal 1TB, respectively, using the calculation above. They are upload recommendations, not universal camera or screen-recording settings. YouTube’s live encoder guidance also varies by codec and frame rate.
Rank #2
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For 1080p HDR uploads, YouTube recommends 10 Mbps at standard frame rates and 15 Mbps at high frame rates—about 222 and 148 hours per decimal 1TB by the same estimate. YouTube’s recommended upload encoding settings provide the upload figures; they should not be treated as a prediction for every 1080p file.
The Tool Desk
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Drive manufacturers use decimal units: 1 TB is 1,000,000,000,000 bytes. NIST defines tera as 1012 and distinguishes SI decimal prefixes from powers of two in its Guide to the SI. Some operating-system displays use binary quantities, so the same drive may appear to have a smaller number of GB or TB. Formatting and file-system use can reduce available space further; the exact usable amount depends on the drive and system.
Rank #3
- Easily store and access 2TB to content on the go with the Seagate Portable Drive, a USB external hard drive
- Designed to work with Windows or Mac computers, this external hard drive makes backup a snap just drag and drop
- To get set up, connect the portable hard drive to a computer for automatic recognition no software required
- This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
- The available storage capacity may vary.
That display difference does not change the bytes on the drive or the bitrate calculation. It does mean that the estimated hours are a practical approximation rather than a guarantee of how many finished files will fit.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to estimate your own recordings
- Find the average total bitrate. Check the recording or export settings, or inspect a representative file’s media information. If only video bitrate is listed, remember that audio and container data add some size.
- Divide 2,222 by the bitrate in Mbps. For example, at 20 Mbps, a decimal 1TB holds approximately 111 hours before overhead.
- Allow room for real-world variation. Variable-bitrate recordings may average above or below the displayed target, and usable drive space may be less than its marketed capacity.
If you have a sample file and know its size and duration, you can make a more practical estimate from that recording: divide the drive’s usable capacity by the sample file size, then multiply by the sample duration. This approach reflects the settings and content of your own footage better than resolution alone.
Quick Recap
Best Value
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- Note: This is only compatible with Apple devices that have a USB‑C port (including iPhone 15 and later, as well as all iPads with USB‑C). Using a Lightning to USB‑C adapter will not resolve the compatibility issue.
Rank #4
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
