You wrote a prompt. You waited. And the video came out looking nothing like what was in your head. Sound familiar?
If you are using an AI video generator regularly, you probably already know that the tool is only half of the equation. The prompt is the other half, and honestly, its the bigger half. Most people blame the model when the video looks off, but in most case, the real problem is sitting right there in the prompt box.
We work with a lot of users on our Veo Video Generator, and after going through hundreds of prompts, we noticed the same mistakes coming up again and again. So we made a list. Here are the 7 biggest ones, and what you should do instead.
1. Being Too Vague About the Scene
This is mistake number one, and its the most common by far. People type something like “a man walking in a city” and expect the AI to fill in every gap perfectly. It can’t, at least not reliably.
The model needs to know:
- What TIME of day is it
- What is the MOOD of the scene
- What camera angle you want
- What the environment actually looks like
A prompt like “a man walking through a rainy Tokyo street at night, neon lights reflecting on wet pavement, cinematic wide shot” is going to give you a completely different (and much better) result than the vague version.
Quick fix: Before you type anything, ask yourself: could a stranger picture this scene exactly from my words alone? If not, add more detail.
2. Ignoring Camera Movement Instructions
A lot of users forget that AI video tools actually understand camera language now. Words like “pan,” “zoom in,” “tracking shot,” “aerial view,” these are not just decoration, they change how the whole video feels.
If you skip this part, the AI will usually default to a static or random movement, which often looks flat and, well, kind of boring honestly.
Try adding phrases such as:
- Slow zoom out
- Handheld camera shake
- Drone shot rising above the scene
- Smooth dolly forward
This one small addition can make a huge difference, more than people expect.
3. Overloading the Prompt With Too Many Ideas
Here’s a mistake that goes the opposite direction. Some users try to cram five different scenes, three different subjects, and two different moods into a single prompt. The result? A confused, messy output where nothing gets enough attention.
AI video models, just like humans honestly, do better with focus. One clear idea, executed well, beats five half baked ideas every time.
| Bad Prompt Style | Better Prompt Style |
|---|---|
| A dragon flying over a city, then a knight fighting, then a sunset, then rain | A dragon flying over a burning city at sunset, cinematic wide shot |
| A woman dancing, singing, cooking, and driving in one clip | A woman dancing in a neon lit studio, close up shot |
Keep it simple. Pick ONE strong idea and describe it well instead of trying to fit a whole movie into 5 seconds.
4. Forgetting to Mention Style or Aesthetic
Do you want it to look realistic? Like a Pixar movie? Like an old film shot on 35mm? If you don’t say it, the AI is basically guessing, and it might guess wrong.
Style keywords matter a lot more then people think. Things like:
- Photorealistic, 4k, cinematic lighting
- Anime style, hand drawn look
- Vintage film grain, retro color grading
- 3D animated, claymation
Leaving this out is like asking a painter to paint something without telling them if you want oil paint or watercolor. Technically they can do both, but the result changes completely.
5. Not Testing Short Variations First
A lot of users write one long, detailed prompt and just run with it, without testing smaller variations first. This is a mistake because you don’t actually know which part of your prompt is doing the heavy lifting until you experiment a bit.
Try this instead. Write your main prompt, generate it, then remove or change one element at a time. Change the lighting. Change the camera angle. See what shifts.
This is especially useful if you’re creating content for platforms like Instagram, where short form video needs to hook viewers fast. If that’s your goal, our Instagram Reels Generator is built specifically for that kind of quick, high engagement content, and testing small prompt tweaks there can save you a lot of time.
6. Using Contradicting Descriptions
This one sounds obvious but it happens ALOT more than you’d think. Prompts that say things like “a bright, sunny day” and then also mention “dark, moody shadows” in the same sentence. The AI has to choose one, and usually it picks something in between that satisfies neither request properly.
Before submitting a prompt, read it back to yourself, slowly. Does anything contradict? Are you asking for “fast paced action” and also “slow, calm movement” in the same shot? Fix these conflicts before you hit generate, it will save you multiple attempts.
7. Skipping the Subject’s Details
Last one on the list, and it’s a big one. People describe the scene, the lighting, the camera, everything… except the actual subject of the video. Who is this person? What are they wearing? What’s their expression?
If your prompt says “a woman standing in a garden” without any other detail about her, the AI is left to invent everything, and it might not match what you actually pictured.
Add details like:
- Age range or general appearance
- Clothing style and color
- Facial expression or mood
- What she’s doing exactly, not just standing there
The more specific you are about your subject, the more consistent and intentional your output will feel.
So, What’s the Real Takeaway Here?
Honestly, prompt writing for AI video is a skill, and like any skill it takes a bit of practice. The good news is, once you know these 7 mistakes, you can literally start fixing them today. No need to wait, no need for fancy tools, just better, more thoughtful prompts.
A quick summary before you go:
- Add real detail to your scene description
- Use camera movement language
- Don’t overload one prompt with too many ideas
- Always mention a visual style
- Test small variations before committing
- Watch out for contradicting descriptions
- Describe your subject properly, not just the background
If you want to put this into practice right away, head over to our Veo Video Generator and try rewriting one of your old prompts using these tips. You’ll probably notice the difference in the first try itself.
And if your content is aimed at short form platforms, don’t forget to check the Instagram Reels Generator too, its built with that fast, scroll stopping style in mind.
Better prompts don’t happen overnight, but they do happen fast once you know what to avoid.
