> ## Documentation Index
> Fetch the complete documentation index at: https://docs.letmepost.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# bluesky.media.image_video_exclusive

> A single Bluesky post is either images-only or video-only — not mixed.

## What it checks

If the `media` array contains both `kind: "image"` and `kind: "video"` items, preflight rejects.

## Why

Bluesky's record schema (`app.bsky.embed.images` vs `app.bsky.embed.video`) is exclusive — a single post embeds *either* images *or* a video, never both. There's no embed shape that holds mixed media.

## Failure response

```json theme={"system"}
{
  "error": {
    "code": "preflight_failed",
    "rule": "bluesky.media.image_video_exclusive",
    "platform": "bluesky",
    "message": "Cannot attach both images and video to the same Bluesky post; pick one.",
    "remediation": "Split the post: images in one post, video in another. Bluesky does not support mixed media in a single record."
  }
}
```

## Remediation

Send two posts. The second can quote-post or thread-reply to the first if you want them visually linked. If you need mixed media in a single visual, [Threads](/platforms/threads) is the platform that supports that — same `media` shape, just send it against a Threads `accountId`.

## Related

* [`bluesky.media.count_max`](/preflight/bluesky-media-count_max) — also caps at 4 images / 1 video.