Text-to-video vs image-to-video: which to use, and when
One invents the whole shot from a sentence; the other animates a frame you already approved. Picking the right one saves most of the credits people waste on video.
By Ideovex Team
Use image-to-video when you care what the shot looks like, and text-to-video when you are exploring ideas. Image-to-video animates a still you have already approved, so you only gamble the motion; text-to-video invents composition and motion at once, so a rejected clip throws away the whole render. For anything with a brief, lock the frame first.
What is the difference?
Text-to-video (T2V) takes a prompt and generates a moving clip from nothing. Image-to-video (I2V) takes a starting image plus a prompt and animates that image. The distinction matters because a video render is expensive — 60 credits for a fast clip, 140 for a standard one, up to 400 for a flagship — so the question is really: how much do you want to leave to chance on each run?
When should I use image-to-video?
Whenever the look is not negotiable. Because you generate and approve the first frame as a cheap still (1–20 credits) before committing to a video render, I2V splits an expensive gamble into a cheap decision and a smaller one. Use it for: a specific product, a consistent character, brand-controlled art direction, or any shot where "close enough" is not good enough.
When should I use text-to-video?
When you are still finding the idea and motion matters more than an exact frame. T2V is faster to a first result — one prompt, one clip — so it is the better tool for mood exploration, quick concept boards, or effects where the movement is the whole point and the exact composition is not. The free experimental video pool runs at zero credits, which makes T2V exploration genuinely free.
Side by side
| Text-to-video | Image-to-video | |
|---|---|---|
| Starts from | A prompt only | A still you approved + a prompt |
| Control over the look | Low — the model decides | High — you set the frame |
| Cost of a rejected clip | The full render | Only the motion attempt |
| Best for | Exploration, mood, effects | Products, characters, brand work |
| Prompt should describe | The scene and the motion | Only the motion |
The hybrid most professionals use
Explore on text-to-video (often free), pick the direction, generate a proper first frame as a still, then finish on image-to-video. You get T2V's speed of ideation and I2V's control of the final shot, and you only spend premium video credits on a frame you have already chosen. That is the workflow the camera-control guide assumes.
Getting the length right
Clips are short — typically 5 or 10 seconds, or 4/6/8 on some models. Decide the cut length you need before you pick the model, then filter to models that hit it. Generating ten seconds to trim to four wastes credits, and the extra seconds usually hold the drift you did not want. Start in the text-to-video or image-to-video studio.
