Guide to Video Generation Parameters
Learn what video generation parameters do in getimg.ai: from aspect ratios and clip lengths to model options and references.
What Are Video Generation Parameters
Before generating a video, you can adjust a few basic settings that define how your output looks and behaves:
- Aspect ratio (the width-to-height shape of your video)
- Length
- Number of variations
- Quality (on select models).
These options are all available right in the prompt box at the bottom of Create video. Available aspect ratios, lengths, and audio support depend on the model in use.
🎥 Auto
Auto is the default and what we recommend for most users. The right video generation model is chosen automatically based on your prompt — including audio-capable models when your prompt asks for sound.
Available options on Auto
- Aspect ratios: 16:9, 9:16 (landscape or vertical)
- Lengths: 5, 6, 8, 10, 12 seconds (silent) / 5, 8, 10 seconds (with sound)
- Variations: 1, 2, or 4
- References: supports First Frame, First + Last Frame, or multiple image References. You can’t use both First (or First + Last) Frame and References simultaneously.
Read our guides to first + last frame and video references for more details.
Auto also includes smart prompt enhancement, which expands short prompts into detailed, well-structured descriptions for smoother, more consistent results.
🧠Pick a Model Yourself
If you want to explore or test different setups, click the Auto / model name button in the bottom-left of the prompt box to open the model menu.
A speaker icon next to a model name shows whether that model supports audio. Pick the one you want.
From there you can:
- Choose any specific video model
- See available clip lengths and aspect ratios (these vary by model)
- Toggle Prompt Enhancement on or off.
Check out our generation parameters guide if needed.
💎 Quality (Select Models)
Some video models support a quality switch. When you’re on one of those models, the switch sits next to the aspect ratio in the prompt box. Use it to trade speed for higher-fidelity output (or the other way around).
On Auto or a model that doesn’t support quality, the switch isn’t shown.
Reference options by model
Each model handles references differently:
- Some allow First Frame only
- Others allow First + Last Frame
- Some support multiple reference images.
You’ll see all supported features listed right under the model name once you select it.
Take a look at our Guide to Video Generation models to learn more.
That’s it: set your ratio and duration, add any references you want, and generate!
Frequently Asked Questions
Auto is the default — it automatically picks the best video model for your prompt (including audio-capable models when your prompt asks for sound) and keeps prompt enhancement on. Click the Auto / model name button in the bottom-left of the prompt box to pick any model yourself, see clip lengths and aspect ratios specific to that model, or turn prompt enhancement off.
getimg.ai uses smart prompt enhancement to expand short descriptions into detailed, structured prompts. This helps the AI generate higher-quality lighting, textures, and motion. If you prefer to use your exact words without changes, click the Auto / model name button in the prompt box, pick a specific model, and toggle prompt enhancement off.
Describe the audio you want directly in your prompt (dialogue, music genre, sound effects). On Auto, getimg.ai picks an audio-capable model automatically when your prompt asks for sound. If you’re picking a model yourself, look for the speaker icon next to the model name in the model list — it indicates whether the model supports audio. Audio-capable models may offer a slightly different set of clip lengths (e.g., 5, 8, or 10 seconds).
Yes. You can adjust the Variations parameter to generate a batch of 1, 2, or 4 videos simultaneously. This allows you to quickly test how the AI interprets your prompt differently in a single run.