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Estimate the data for your playlist
The main variables are the average bitrate YouTube actually delivers and the total time the playlist plays. Resolution labels alone cannot give an exact amount: codec, content, frame rate, adaptive quality and the delivered rendition all affect bitrate.
Use this formula
Data (decimal GB) ≈ average bitrate (Mbps) × hours played × 0.45
The factor comes from converting megabits per second into decimal gigabytes: 3,600 seconds per hour ÷ 8 bits per byte ÷ 1,000 to convert megabytes to gigabytes. The result estimates media payload, before some network and protocol overhead.
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Example scenarios
| Assumed average bitrate | Approx. data for 1 hour | Approx. data for 3 hours |
|---|---|---|
| 1 Mbps | 0.45 GB | 1.35 GB |
| 2.5 Mbps | 1.125 GB | 3.375 GB |
| 5 Mbps | 2.25 GB | 6.75 GB |
| 8 Mbps | 3.6 GB | 10.8 GB |
These are arithmetic scenarios, not predictions of the bitrate YouTube will deliver. For a playlist with several videos, add the durations actually played. If a 90-minute playlist completes four loops, count six hours of playback, not 90 minutes.
Find a useful bitrate for your estimate
The closest estimate uses the average bitrate of the rendition that actually plays. If quality changes during playback, use a time-weighted average across those renditions. You can also compare your internet connection’s data counter before and after a representative playback period; that captures the traffic observed by that connection, though other devices or activity can affect the difference.
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Do not treat upload guidance as playback data
YouTube recommends 8 Mbps for 1080p SDR uploads at standard frame rates and 5 Mbps for 720p SDR uploads at standard frame rates. Those are encoding recommendations for uploads, not fixed rates for playback, so they should not be substituted as the bitrate of your stream. See YouTube’s upload encoding recommendations.
FFmpeg streamcopy does not set viewer usage
FFmpeg’s -c copy copies encoded packets without decoding or encoding them; transcoding decodes and re-encodes media. That distinction concerns FFmpeg’s processing pipeline. It does not, by itself, determine how much data a viewer receives from YouTube. The delivered playback bitrate and viewing time remain the useful inputs for the estimate. See the FFmpeg documentation.
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Compare the estimate with Indian broadband allowances
Indian broadband limits and fair-use policies depend on the provider and plan. TRAI says providers must clearly specify the fair-use limit and the speed after it is exhausted; check your own plan’s allowance, billing-cycle rules and post-limit speed. See the TRAI Broadband FAQ.
Provider figures can offer context, but they are not a measurement of your FFmpeg playlist. Jio’s video-use page estimates up to 0.3 GB/hour for Low, 0.7 GB/hour for Medium, 1 GB/hour for High, 3 GB/hour for HD and 7 GB/hour for Ultra HD, while noting that usage varies by app or website, including YouTube. Treat these as Jio’s broad estimates, not guaranteed YouTube rates: Jio video data-use estimates.
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Terms also differ between plans. For example, JioFiber’s cited postpaid FAQ describes unlimited high-speed data for home use, subject to restrictions for misuse, fraudulent, unauthorized or commercial use. Airtel’s cited broadband terms list a 3333 GB billing-cycle fair-use threshold followed by a speed reduction to 1 Mbps, and state that the threshold may change. Neither example applies automatically to every plan or location. Check the terms for your own service: JioFiber postpaid FAQ and Airtel broadband terms.
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