Since Sora’s second-gen video tool, the corner watermark has become noticeably harder to deal with. When distributing clips to other platforms—especially for vertical edits, mashups, or remixes—it looks out of place. I often need a clean version for editing and packaging, so I built a simple button: upload → click → download. Site: sorawatermarkremover.net

What it does

Automatically detects the corner region and cleans it with AI in one click;

Works with default settings—no manual tweaking for most clips;

Outputs common formats that drop straight into your edit/distribution flow.

Boundaries & use

For content you own or are authorized to edit only. Please don’t remove marks that must remain or use it for infringement.

This isn’t an ownership check; I rely on user responsibility. If stronger guardrails are needed, I’m open to adding them.

Privacy

No login required to try;

Processing is server-side; I don’t use uploads for training or share them;

Retention/deletion policy will be tightened and clarified based on feedback.

Known issues

Fast motion + complex textures may show subtle artifacts;

Heavily compressed footage is more likely to reveal edges. I welcome hard cases.

Why HN This started as a small button for my own distribution workflow, and I’d love honest feedback:

Web app vs a Chrome extension—which would you prefer?

Any watermark scenarios in distribution that I’m missing?

Suggestions on policy/abuse prevention.

What’s next

Batch processing and API if there’s demand;

A “light blend” mode that favors natural look over total removal.

Thanks for reading—feel free to share short clips that break it, and I’ll follow up.