The honest answer: it depends. Three things determine whether removing a Sora watermark is legal — who owns the clip, what you're using it for, and what the destination platform requires. Get all three right and you're fine. Miss one and you're not.
1. Ownership
If you generated the clip on your own Sora account, you own the rendered output and you have the right to edit it — including removing the watermark. If you didn't generate it, you don't own it, and removing the watermark from someone else's clip is squarely off-limits.
2. Your use case
Editing your own clip for personal use, portfolio, or commercial work generally falls within OpenAI's usage policies. What's not okay is using a watermark-free clip to mislead viewers — passing AI footage off as real news, impersonating a real person, or any use that would be off-limits with the watermark intact. Removing the watermark doesn't change what the clip is allowed to do.
3. Where you're posting it
Most major platforms (TikTok, Meta, YouTube) now require AI-generated content to be labeled, regardless of whether you've removed the visible watermark. Some platforms read the C2PA metadata directly and will label the clip whether you tag it or not. Failing to label AI content can get your post taken down or your account flagged.
The short rule
Remove the watermark from clips you generated, for uses that would be allowed anyway, on platforms where you can comply with their AI labeling rules. That covers most legitimate cases.
What about the C2PA metadata?
Most watermark removers (including ours) only touch the visible logo. The C2PA provenance data stays in the file. That's usually fine — it lets platforms accurately label your clip, which is what they're asking for anyway.
For the longer version, see the complete legal guide. None of this is legal advice — talk to a lawyer if you're working in a high-stakes context like advertising or news.