For a continuous local recording, estimate storage from the bitrate actually written to disk and the number of hours you keep it. A useful starting point is bitrate in Mbps × hours × 0.45 = decimal GB, then add working space for variation and other files.
At 1 Mbps, that is about 10.8 GB per day. A loop made from pre-recorded videos is a different case: its source library only needs space for the files in rotation, not a full day of unique footage. The figures below are estimates, not promises of exact file sizes.
Estimate storage from bitrate and hours
A megabit is not a megabyte. To estimate storage, convert the stream’s recorded bitrate from bits to bytes, then multiply by the runtime. Since one byte contains eight bits, 1 Mbps sustained for one hour writes roughly 450 million bytes. In decimal units, that is 0.45 GB.
Use this formula for an estimate:
Decimal GB = recorded bitrate in Mbps × recording hours × 0.45
For example, if your software records at 6 Mbps for 10 hours, the estimate is 6 × 10 × 0.45, or 27 GB. If you record the same output continuously for a day, it is 6 × 24 × 0.45, or 64.8 GB. For a month of continuous recording, use the daily estimate multiplied by the number of days you intend to keep; 30 days at that bitrate is about 1.94 TB in decimal units.
The word “recorded” matters. The value you need is the bitrate of the local file, not necessarily a setting you saw in a YouTube help page, the total bitrate of a viewer rendition, or your upload speed. If the recording software shows separate video and audio bitrates, include both for a more complete estimate. If it reports the combined output bitrate, use that figure once.
This calculation uses decimal units: 1 GB is 1,000,000,000 bytes and 1 TB is 1,000 GB. Operating systems and storage manufacturers do not always display capacity in the same units, so a drive labelled in decimal terabytes may show a smaller-looking number in a system that counts binary units. That display difference does not mean the file calculation is wrong.
YouTube’s live encoder settings list recommended H.264 ingestion examples by resolution and frame rate. Those examples help illustrate scale, but they are not instructions about what your local recording must use. Choose the recording settings for your content and setup, then calculate from the bitrate actually written to disk.
The daily storage rule of thumb
For quick planning, multiply each Mbps of continuous recorded bitrate by 10.8 GB per day. That is the same formula simplified for 24 hours: 1 × 24 × 0.45 = 10.8. At 4 Mbps, expect an estimate near 43.2 GB each day; at 10 Mbps, near 108 GB each day.
| Recorded bitrate | Approx. per hour | Approx. per day | Approx. 30 days |
|---|---|---|---|
| 1 Mbps | 0.45 GB | 10.8 GB | 324 GB |
| 4 Mbps | 1.8 GB | 43.2 GB | 1.30 TB |
| 6 Mbps | 2.7 GB | 64.8 GB | 1.94 TB |
| 8 Mbps | 3.6 GB | 86.4 GB | 2.59 TB |
| 10 Mbps | 4.5 GB | 108 GB | 3.24 TB |
| 14 Mbps | 6.3 GB | 151.2 GB | 4.54 TB |
| 17 Mbps | 7.65 GB | 183.6 GB | 5.51 TB |
Every row is a mathematical estimate, not a measured file size. The numbers assume a constant bitrate and continuous recording, and are rounded for readability. Actual output can differ because an encoder’s bitrate may vary, audio may be accounted for separately, and the file container adds some overhead.
The rule is useful for comparing choices. At the same duration, doubling the recorded bitrate approximately doubles the estimated storage. Cutting a full-day recording down to a few hours has the same proportional effect. It does not tell you whether the lower bitrate still looks or sounds acceptable; test the material you actually publish before setting a long retention target.
Do not treat the 20 per cent upload-bandwidth headroom mentioned in YouTube’s streaming tips as extra disk space. That guidance concerns network capacity for a reliable stream. Storage headroom is a separate allowance you choose for your drive and files.
Worked 1080p30 and 720p60 examples
YouTube’s H.264 guidance gives 14 Mbps as a recommended live-ingestion bitrate example for 1080p30, and 8 Mbps for 720p60. Applying the storage formula to those figures shows why resolution and frame rate choices matter to a local archive. The examples are calculations from YouTube’s ingestion recommendations, not a claim that you must record at those bitrates.
For 1080p30 at 14 Mbps:
- Per hour: 14 × 0.45 = about 6.3 GB.
- Per day: 14 × 24 × 0.45 = about 151.2 GB.
- For 30 days: 151.2 × 30 = about 4,536 GB, or 4.54 TB decimal.
For 720p60 at 8 Mbps:
- Per hour: 8 × 0.45 = about 3.6 GB.
- Per day: 8 × 24 × 0.45 = about 86.4 GB.
- For 30 days: 86.4 × 30 = about 2,592 GB, or 2.59 TB decimal.
These examples make a practical distinction visible: 720p60 is not automatically “small”, and 1080p30 is not automatically “too large”. The bitrate you use, not just the resolution label, drives the estimate. A music loop with a mostly static image may have different quality needs from a local news loop with moving footage and text; you need to judge the picture and audio quality for your own material.
YouTube transcodes live streams into formats for viewers, so the number of output versions a viewer might encounter is not the quantity to multiply by your archive duration. For disk planning, look at the bitrate of the one local recording you choose to keep. The official live streaming setup help is useful for checking platform guidance, but it does not replace checking your encoder’s recording output.
If you use a codec other than H.264, do not carry an H.264 example across by assumption. YouTube lists separate recommendations for other codecs. More importantly for storage, use the local file’s actual bitrate rather than trying to infer its size from a codec name alone.
Calculate storage for your retention period
First decide what you mean by storage. A pre-recorded channel commonly has a library of source videos, a local recording of the live output, or both. The library size is the sum of the assets you plan to loop or schedule. If you have six hours of bhajans and repeat them through the day, you do not need 24 hours of unique source footage merely because the channel is live for 24 hours.
A local recording is different: it captures the output continuously, including repeats, transitions, and any gaps or holding screens that occur. For that archive, use the bitrate-hours formula. This distinction can prevent a common budgeting error: multiplying the live channel’s runtime by bitrate when you only need the source files, or adding up source assets when your actual aim is to retain the full outgoing feed.
To estimate an archive for a particular period, calculate the daily amount and multiply it by the number of days. At 6 Mbps, a continuous local recording is about 64.8 GB per day. Seven days is about 453.6 GB; 30 days is about 1.94 TB. If you only keep one week of recordings before deleting or moving them, there is no reason to size the active recording drive for a month of footage, unless you also need space for other files or a safety margin.
A useful planning sequence is:
- Find the local recording bitrate in your encoder or recording application.
- Confirm whether its figure includes audio; add audio if it is separate.
- Multiply bitrate by hours and by 0.45 for decimal GB.
- Multiply by the retention duration, expressed in hours or days.
- Add free space for normal operation, file variation, and other content.
For a changing schedule, calculate each part separately. If you record a 6 Mbps output for 16 hours and a 4 Mbps output for eight hours each day, estimate 6 × 16 × 0.45 plus 4 × 8 × 0.45, or 72 GB per day. This is still an estimate, but it is more useful than treating every hour as if it used the higher bitrate.
Retention also has a workflow cost. A longer archive can help you recover a source mistake or review what actually went out, but it uses more capacity and may need a second copy if the footage matters. A short retention period saves space, yet it leaves less history to inspect after a fault. Choose based on how quickly you notice problems and what you would need to recover, rather than treating a particular number of days as universal.
If you are building the playback side as well as sizing its files, the practical setup tools and tips for YouTube Live can help you think through the wider channel workflow. For a scheduled local playlist, the Linux systemd timer approach is relevant to how files are selected and started; it does not change the storage arithmetic.
Allow space for overhead and variation
The formula assumes the bitrate remains steady. Some recording modes target a variable bitrate, so complex moving scenes can use more data than quiet or static scenes. Audio settings, file format, metadata, and how the application closes or splits files can also move the final size away from the estimate. It is sensible to treat the answer as a planning baseline, then observe actual files from your own setup.
Do not plan to fill a drive to its advertised capacity. Keep usable free space for the operating system, temporary files, new recordings, and the difference between an estimate and real output. The right allowance depends on what else shares the device and how you manage old files; there is no single percentage that fits every home computer, external drive, or recording workflow.
Before relying on a long archive, run a test recording and note both its duration and size. Compare the observed file size with the estimate. If the difference is material, check whether the bitrate is variable, whether audio is additional, and whether your application is recording a different output from the one you thought. Recalculate using the observed average bitrate or measured size per hour rather than repeatedly trusting a setting label.
YouTube advises checking that a local archive file is growing during a live stream. Its live streaming tips also recommend verifying the local archive. Make a habit of checking a fresh recording and opening or playing it, not merely confirming that a file name exists. A file can be present but incomplete or unusable.
There is a separate reason not to rely only on YouTube’s replay archive for a continuous channel. YouTube says streams shorter than 12 hours can be automatically archived, while streams longer than 12 hours may not be captured at all. Its archive guidance recommends keeping a local archive backup. For an uninterrupted 24/7 broadcast, plan a local copy if you need a dependable record of the entire output, and verify how your own stream is divided or recorded.
A local recording can be stored on the same machine, an external drive, or another storage device. A second copy protects against a problem with the first device, but it also increases the capacity you need if you retain both copies. If you move files to a larger archive device, include the transfer and verification step in your routine; a backup that has not been checked is not much help when you need it.
Local recording versus cloud playout
If you run the stream from a computer at home, local recording consumes space on the computer or connected drive for as long as the recording is retained. The playback source library and the outgoing archive may be on the same disk, but they serve different purposes. Keep their space needs separate in your estimate, especially if a playlist loops the same material while the archive records every pass.
Cloud playout changes where the continuous broadcast is run, but it does not automatically answer what archive you need. If you upload source files and do not retain a local copy of the outgoing stream, your local storage requirement may be close to the size of the source library plus working copies. If you still choose to record the full output on your own computer, use the same bitrate and duration formula; the stream’s location does not make that file smaller.
This is a trade-off between control, ongoing local storage, and the need for a complete retained copy. Local playback and recording give you direct access to files and the ability to keep your own archive, but the machine and disk need attention. A cloud-run broadcast can remove the need to leave your personal computer on for playout; it does not remove the need to decide whether source files, backups, and recordings should be retained locally.
For a channel where the main concern is a home computer filling up with an uninterrupted output recording, StreamNeo takes that continuous playout task off the local machine: you upload the video, connect the YouTube stream, and the broadcast can run while your computer is off. You still decide what source files and backups to keep, and whether you need a separate local archive of what went out.
A practical choice is to estimate each category separately: the source library, any working copies, and the full-output archive. Keep only the copies you have a reason to retain, but do not mistake removing the local archive for keeping a backup. If a particular broadcast must be reviewable later, check that your chosen recording method produces a complete and playable file before relying on it.
For a Linux setup that uses a local playlist and a machine you operate yourself, the software choices for a 24/7 Indian music stream may help with playback planning. If your channel instead relies on a pre-recorded podcast archive, see the Windows Task Scheduler workflow. Neither workflow changes the basic arithmetic; they help clarify which files are sources and which are recordings.
Before committing, compare the operating options on the pricing page. When the file and channel are ready, start free — 24-hour trial, no card.
FAQ
Is 1 Mbps enough to estimate a day of recording?
Yes. At a continuous 1 Mbps, the estimate is about 10.8 decimal GB per day. Use the bitrate shown for the local recording, including audio if it is not already part of that figure, and expect the actual file size to vary.
Does a 24/7 playlist need 24 hours of video files?
No. If the same source videos repeat, the library only needs enough space for the unique files you choose to rotate. A recording of the outgoing feed is different because it captures the full runtime, including repeats.
Can YouTube keep the only copy of my whole 24/7 stream?
Do not assume it will. YouTube says streams longer than 12 hours may not be captured as an archive and recommends a local archive backup. Check current YouTube guidance and verify your own recording rather than relying on a replay being available.
Why is my file larger or smaller than the estimate?
The estimate assumes a steady bitrate and uses decimal GB, while your recording may use variable bitrate and include audio or container overhead. Compare a test file’s size and duration, then use your observed output to refine the estimate and leave working space.