October 16, 2026
If you produce a 30-minute documentary, you will need somewhere between 12 and 22 minutes of B-roll. That is 720 to 1,320 seconds of non-talking-head footage that has to be sourced, licensed, colour-matched and cut. Most faceless channels under 500K subscribers blow 40-70% of their per-video budget on this single line item, and they do it without ever calculating the actual broll cost per second for YouTube documentaries. That number, not the editor's hourly rate, is what decides whether a video is profitable.
This article gives you the real 2026 numbers: five B-roll sources compared on cost per second, sourcing time per finished minute, and legal risk. Then it shows you the optimal mix by documentary type — history, true crime, science, business, biography — so you can cut your average cost per second by 50-70% without the visuals looking cheap.
Every figure below is a range you can verify with a quote request this week. No vague "it depends". No affiliate fluff.
Creators quote prices per clip ("$79 for a 4K shot") because that is how stock sites sell. But a 12-second clip and a 3-second clip cost the same at checkout and deliver wildly different value in the timeline. What matters is usable seconds: after you trim to the beat, cut around the watermark-free edges, and discard the 30% of downloads that never make the final edit.
Use this formula:
True cost per usable second = (total spend on B-roll) ÷ (seconds that survive into the final cut)
Example: you spend $240 on a stock pack, download 60 clips, and 38 seconds of them end up in the video. Your real cost is $6.32 per second, not the $4.00 per clip the pricing page implied. Run this calculation once per video for a month and you will see exactly which source is draining your budget.
Prices below are typical ranges for small production teams (1-3 people) buying on standard or mid-tier plans, not enterprise deals. AI generation costs assume a paid subscription plus the credit overage you will inevitably hit.
| Source | Cost per usable second | Sourcing time per finished minute | Legal risk | Best for |
|---|---|---|---|---|
| Premium stock (Artgrid, Storyblocks high tier, Getty editorial) | $3.50 – $9.00 | 4 – 7 min | Very low | Hero shots, emotional close-ups, branded sequences |
| Budget stock (Pexels, Pixabay, Videvo free tier, Envato low tier) | $0.00 – $1.20 | 10 – 18 min | Low but inconsistent | Filler, establishing shots, background texture |
| AI-generated B-roll (Runway, Kling, Sora-class models, Pika) | $0.80 – $4.50 | 15 – 40 min | Medium (platform policy, likeness) | Impossible shots, historical reconstruction, abstract concepts |
| Public-domain archive (Internet Archive, Library of Congress, NASA, Prelinger) | $0.00 – $0.40 | 20 – 45 min | Low but requires verification | Pre-1970 history, government footage, space, war |
| Licensed archive (Getty, AP, Reuters, Critical Past, Bridgeman) | $8.00 – $45.00 | 8 – 20 min | Low if licensed correctly | True crime, recent history, celebrity, news events |
Read that table again and notice the trap: the two cheapest sources per second are also the two slowest to source. If your editor costs $25/hour, 30 extra minutes of sourcing adds $12.50 — which can erase the savings on a 60-second B-roll sequence. This is why the mix matters more than any single source.
The debate around stock footage cost vs AI B-roll usually ignores failure rates. Here is what actually happens in production.
Artgrid runs roughly $299/year for unlimited downloads; Storyblocks unlimited is around $360/year; Getty editorial is priced per clip and starts near $150 for a 10-second news shot. On a per-second basis, an unlimited plan looks unbeatable — until you count the hours spent scrolling. Realistic hit rate: you download 4 clips for every 1 you use.
Pexels and Pixabay are genuinely free for commercial use, but the library skews toward drone shots, generic offices and slow-motion coffee pours. For a documentary about the 2008 financial crisis, you will find nothing usable. Budget stock works for 15-25% of a typical documentary timeline, not 100%.
In 2026, a 5-second AI clip costs roughly $0.40-$1.20 in credits on mid-tier plans, but the first generation is usable maybe 25-40% of the time. That means your effective cost per usable second is 2.5-4x the sticker price. AI shines for: historical scenes you cannot license, abstract concepts ("inflation", "compound interest"), and impossible camera moves. It fails at: real people, real places, text on screen, and anything requiring continuity across shots.
Practical rule: never generate more than 20-30% of a documentary's B-roll with AI. Past that threshold, viewers notice the plastic texture and retention drops in the analytics within the first 3 minutes.
When people research archive footage licensing for YouTube, they usually discover the gap between public domain and licensed archive the hard way — after a claim.
Pre-1929 US works are generally public domain. US federal government footage (NASA, military, NARA) is public domain regardless of date. The Internet Archive hosts millions of hours. Cost per second: effectively zero. But: resolution is often 480p, frame rates are inconsistent, and you will spend 20-45 minutes per finished minute hunting, downloading, upscaling and stabilising.
Verification checklist before you use any public-domain clip:
Getty, AP Archive, Reuters and Critical Past charge per clip. Expect $150-$600 for a 10-30 second historical news clip for YouTube use, sometimes more for celebrity or crime footage. That is $8-$45 per second. It is expensive, but for true crime and recent history it is often the only legal option — and a single copyright strike costs more than the licence.
These mixes are based on what actually ships, not theory. Percentages are share of final B-roll seconds.
| Documentary type | Premium stock | Budget stock | AI | Public archive | Licensed archive | Est. blended cost/sec |
|---|---|---|---|---|---|---|
| History (pre-1970) | 10% | 10% | 25% | 50% | 5% | $1.10 – $2.40 |
| True crime | 20% | 10% | 15% | 15% | 40% | $4.50 – $14.00 |
| Science / space | 25% | 10% | 40% | 25% | 0% | $1.20 – $3.20 |
| Business / finance | 35% | 20% | 35% | 5% | 5% | $1.60 – $4.00 |
| Biography (living subject) | 30% | 15% | 10% | 10% | 35% | $3.80 – $11.00 |
The pattern is clear: the more recent and the more specific the subject, the more you pay. History and science documentaries can run at $1.10-$3.20 per second. True crime and living-subject biographies rarely drop below $4.
Six levers, ordered by impact:
For a 30-minute history or science documentary, $1.10-$3.20 per usable second is realistic. For true crime or living-subject biography, $4-$14 per second. The blended figure depends almost entirely on how much licensed archive you need.
Per generated clip, yes — roughly $0.40-$1.20 for 5 seconds. Per usable second, often no: 60-75% of generations are discarded, which pushes the effective cost to $1.50-$4.50. AI wins on shots you cannot license, not on raw price.
Yes, if it is genuinely public domain in your jurisdiction and contains no separately-owned music, performances, or identifiable living people. Save the source page and licence statement for every clip. Verification takes 2-4 minutes per clip and is non-negotiable.
Expect $150-$600 per news clip for YouTube use, or $8-$45 per second. A 30-minute true crime video typically needs 40-70 seconds of licensed archive, so budget $600-$2,500 for that line item alone.
With a mixed-source workflow: 6-12 hours total. Premium stock is fastest (4-7 minutes per finished minute), public-domain archive is slowest (20-45 minutes per finished minute). Budget 10 hours as a baseline for a first-time workflow, 6 once your library exists.
1. Measure cost per usable second, not cost per clip. The gap between the two is where most channels lose 30-50% of their B-roll budget without noticing.
2. Match the mix to the documentary type. History and science can run at $1.10-$3.20 per second with heavy public-domain and AI use. True crime and living-subject biography cannot go below $4 without legal exposure.
3. Cap AI at 25% and always save licence proof. Those two rules alone prevent the two most common failure modes: retention collapse and copyright claims. If you would rather not manage any of this, VAATIK's AI-powered documentary production handles B-roll sourcing, licensing verification and the full edit as a done-for-you system — you get the finished 30-minute video, not the spreadsheet.
See How VAATIK Can Run Your Channel → Partner Program → €200 + 10% Recurring