Dim or crop a clip: does YouTube need an altered-content label?
YouTube exempts color adjustment, beauty and effects filters. Whether a Sume video filter dim or crop falls under that, and what the exemption does not cover.

A dim or crop is a pixel pass, and the YouTube disclosure page is explicit about minor edits: it lists "beauty filters," "color adjustment," "special effects filters," "caption creation," and cloning one's own voice for voice overs as not needing disclosure.
What Sume's filter does
Video filter has two ops. dim multiplies luma, so black stays black and chroma does not change. crop takes a rectangle as fractions of the frame. Both keep the geometry otherwise, and the result is a new MP4 while the source is unchanged.
| Edit | Disclosure per the page |
|---|---|
| Dim to 0.45 luma | Reads as color adjustment: not listed as needing it |
| Crop to a tighter frame | Not named; if it hides or changes what happened, disclose |
| Crop that removes a person from a real event | Could alter footage of a real event: disclose |
The test that remains
The page's criteria are about meaning: does the edit make a real person appear to say or do something they did not, alter footage of a real event or place, or generate a realistic scene that did not occur? A dim does not do any of those. A crop can, if it changes what the footage shows.
Practice
Keep the original next to the edited file. If a crop changes the story, answer Yes to Altered content, and note why. Disclosing, per the page, does not limit audience or monetization eligibility.
Sources
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Written by Sume