---
title: "Register existing objects under a prefix"
method: POST
path: "/admin/media-processing/backfill"
tags: ["Admin Media Processing"]
---

# Register existing objects under a prefix

`POST /admin/media-processing/backfill`

Skips derivative keys and subtitle sidecars. Use dryRun to see what would be picked up before spending Lambda time on it.

## Response `202`

---

[API](https://skmtc.dev/miaai/apis/backend-template-api.md) · [All operations](https://skmtc.dev/miaai/apis/backend-template-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/miaai/backend-template-api/revisions/2a8d88a5124f/schema)