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AI video generators: which spec claims actually matter
How to tell an AI video toy from a production tool — by testing control, consistency and cost before you buy.
Every AI video launch lands with the same two numbers: how many seconds it can generate, and how crisp the output claims to be. Both are worth ignoring on day one. What separates a toy from a production tool is how much control you actually get over the result.
Read the spec sheet sideways
Three claims matter more than resolution:
- Character consistency. Can the same person, logo or product appear across several shots without drifting? This is the hardest problem in the field and the one demo reels hide.
- Shot-level control. Can you lock a camera move, a framing choice or a beat, instead of re-rolling the whole clip until you get lucky?
- Cost per usable take. Generation is metered, and unusable takes still count. A cheap per-second price means little if you burn ten rolls for one keeper.
How to test in one afternoon
Pick a real deliverable — a ten-second product shot, not "a cinematic city". Then run it twice: once with a detailed written prompt, once with a reference image. If the tool cannot keep the subject recognisable across both runs, the resolution number on the box does not matter.
Tools in our directory
Runway is the name most editors reach for when they need cinematic, controllable output. Descript takes a different lane: editing video by editing the transcript, which suits talking-head content and podcasts. Both have full reviews under media with pricing spelled out. If you are just starting, the honest advice is to run the same test clip through each free tier and keep the one whose second take you trust.
The honest summary
The gap between "looks amazing in the showcase" and "survives a client round" is wider in video than anywhere else in AI. Test on your own footage, your own deadline, and your own tolerance for re-rolls — that is the spec that actually determines whether the tool earns its subscription.
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