TIL: You can use negative prompts in Pika, sort of.

Hey folks! I was messing around with Pika's video generation this weekend and stumbled onto something pretty handy for cleaning up generations. While it doesn't have a formal "negative prompt" field like some image generators, you can kinda fake it by being very explicit in your *positive* prompt about what you **don't** want.

Here's what I found works well:

**The trick:** Start your prompt with a strong, clear description of the main subject and style, then add a clause that explicitly removes common unwanted elements.

For example, instead of just:
> "a robot walking through a cyberpunk city"

You could write:
> "a sleek robot walking through a detailed cyberpunk city at night, cinematic, **avoiding any glitch effects, text overlays, or blurry background**"

It's not perfect, but I got way fewer of those random digital artifacts and messy frames by doing this. The AI seems to weigh the later instructions, especially if they're framed as exclusions.

I did a quick comparison. Same seed, two prompts:

**Prompt A (basic):**
```
cyberpunk market, neon signs, rain
```
**Prompt B (with 'avoid' instructions):**
```
cyberpunk market, neon signs, rain, highly detailed, **avoiding any human figures, flying cars, or lens flares**
```

The second one gave me a much cleaner scene focusing just on the environment and lighting, which is what I was after. It's great for when you have a very specific visual in mind and the default generations keep adding extra stuff.

Anyone else tried similar techniques? I'm curious if you've found specific "negative" phrasing that works consistently. I'm still experimenting to see if words like "without," "excluding," or "no" work better than "avoiding."