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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Multiply the recording’s combined video-and-audio bitrate by the total recorded seconds, then divide by 8 to estimate bytes. At YouTube’s recommended H.264 settings for 1080p30—10 Mbps video plus 128 kbps stereo audio—a continuous 30-day local recording works out to about 3.28 TB decimal (2.98 TiB). That is a calculation from the selected settings, not a measured file size or a universal rule for 1080p.
Calculate storage from bitrate and recording time
Use the bitrate of the file you are recording, not resolution by itself. If video and audio bitrates are listed separately, add them together first.
Storage in bytes = combined bitrate in bits per second × recording duration in seconds ÷ 8.
For decimal storage units, divide bytes by 1,000,000,000 for GB or 1,000,000,000,000 for TB. For binary units, divide by 1,073,741,824 for GiB or 1,099,511,627,776 for TiB. TB and TiB are not interchangeable, so label which convention you use.
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Worked example: 30 continuous days at 1080p30
YouTube’s encoder guidance recommends 10 Mbps H.264 video for 1080p30 and 128 kbps stereo audio. Together, those settings give 10.128 Mbps, or 10,128,000 bits per second. Thirty uninterrupted days contain 2,592,000 seconds:
10,128,000 × 2,592,000 ÷ 8 = 3,281,472,000,000 bytes
That is approximately 3.28 TB decimal or 2.98 TiB, and about 4.56 GB decimal per hour at the same combined bitrate. These are arithmetic estimates based on the chosen settings and duration, not guaranteed file sizes. See YouTube’s encoder settings and bitrate guidance.
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Worked example: 720p60
YouTube lists 6 Mbps H.264 video for 720p60; adding 128 kbps stereo audio gives 6.128 Mbps. Over 30 continuous days, that equals approximately 1.99 TB decimal. Use the bitrate for the actual recording settings you expect to sustain.
Adjust the estimate to your schedule and recording settings
Record fewer than 24 hours a day
Thirty days is 2,592,000 seconds only if recording runs continuously. Multiply the continuous estimate by the fraction of each day you actually record. For example, eight hours per day is one-third of 24 hours, so the 1080p30 example is about 1.09 TB decimal before adding headroom.
Use the actual bitrate, not resolution alone
Resolution does not uniquely determine file size. The result depends on the encoder’s bitrate and settings, audio, and how many hours are recorded. For variable-bitrate recording, pauses, separate audio tracks, or multiple saved quality copies, actual storage can differ from an estimate based on one configured rate. For planning, use the highest plausible sustained combined bitrate and the full retention period.
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Leave room for overhead and extra copies
Plan for more capacity than the raw estimate to accommodate filesystem overhead and recording variation. The amount of headroom is your planning choice, not a YouTube rule. Count any duplicate local copies separately: keeping two full copies requires roughly twice the library capacity, before headroom.
YouTube archives and viewer resolutions do not change the local calculation
YouTube transcodes a live stream into multiple viewer formats. You do not need to multiply your local recording estimate by the number of playback renditions; calculate the capacity for the files you actually keep.
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YouTube Help recommends a local archive as a backup and says streams shorter than 12 hours can be automatically archived, while a longer stream may not be captured. The 12-hour note is an archive caveat, not a file-size limit. Check YouTube’s live-stream archive guidance and retain a local recording if you need dependable access to the original file.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Choose storage for the calculated library
For one local library, a high-capacity external drive is the straightforward category to compare. Check its usable capacity after formatting, price per usable terabyte, connection type and sustained transfer capability, warranty, and portability. Choose capacity above your estimate plus the headroom you selected.
If you want an independent backup, budget for a second drive and keep a separate copy; a single drive does not provide that second copy. A NAS may suit a larger, shared, or expandable archive, but it is not necessary to do the storage calculation. No particular drive or NAS is required by the estimates above.
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Or let it run in the cloud
If the goal is to keep uploaded prerecorded videos looping as a YouTube live stream rather than maintain a local 30-day recording library, StreamNeo runs the stream from the cloud: upload your video or build a playlist, add your YouTube stream key, and go live. Your computer and home connection do not have to stay on. It streams the uploaded file as made, up to 4K 60fps, at one price per slot; it can recover automatically if YouTube drops the stream. StreamNeo is for YouTube streams, not camera broadcasts.
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