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Every free Pika export wears the corner logo, and the $8 Standard plan does not lift it. Where the boundary actually sits, and the routes to a clean file.
Every product video watermark has a source: supplier stamps, platform logos, or retired branding. Diagnose first, clean second, then match the spec.
The free plan stamps every export, and three export traps brand paid files too. The clean lane, the fix for stamped clips, and the C2PA layer.
No watermark, permanent clips, a ladder up to 1080p60 source - Twitch is the easy case. The retention clock on VODs is the catch. Every lane explained.
Facebook names a bookmark as if it were a download. Native lane, the Save trap, five URL forms, and how to fetch clean MP4s from any public video.
X gates the download button by subscription, not watermark. Premium lane vs link lane, why X file sizes are so often wrong, and how to fetch clean MP4s from any account.
Instagram's save button is a bookmark, not a file - and the export stamps a watermark. Fetch the clean CDN source instead, and learn which of three watermark types you are actually facing.
Skip the branded save: TikTok's play_addr stream is the clean original the app plays. Copy the link, parse free, take the MP4 - no watermark ever touches the file.
Downloading without removing: fetch the clean source file platforms use for playback. 15 verified platforms, seconds per clip - plus the decision frame for when AI removal is still needed.
How watermark detection models work: CNN detection, SAM 2 mask generation, temporal tracking for moving marks, and the invisible-watermark research frontier.
DMCA Section 1202 makes watermark stripping its own violation: CMI rules, per-work damages to $25,000, the 2026 scienter ruling, and when removal is legal.
Sora's logo cycles 3 regions every ~3 seconds. Tested late-2026 workflow to clean it with motion-aware AI inpainting while C2PA provenance stays intact.
