YouTube Watch With: Reactors Keep Live Ad Revenue. Uploaders Get Views and a Veto.

YouTube is writing the payout split for live reaction streams into the product rules.

At Made on YouTube on 23 September, Barbara Macdonald, who leads product management for YouTube Live, said the platform is expanding Watch With beyond livestreams to all eligible long-form videos, with rollout starting later this year. A React live control on eligible long-form videos or livestreams will let a creator open a reaction broadcast from the source. Reacting creators keep the live ad revenue and fan funding they earn. Original creators get clear attribution, added view credit in YouTube Studio, and full control over which of their videos can be reacted to. The blog lists no cut of that live money for the uploader.

Treat the economics as company-announced product terms, not a negotiated rights deal and not a disclosed revenue-share percentage. YouTube also put the live audience base on the table: in August 2026, more than 600 million logged-in viewers on average watched live content each day, including archives, per internal YouTube Live data cited in Macdonald's post. More than 40 per cent of live watch time already comes from outside a creator's home country — the number YouTube used to sell live auto-dubbing, a separate pilot due in early 2027.

Watch With has been built in stages. YouTube first piloted it on premium tentpole streams so creators could react to major broadcasts, then tested live reactions between creators' livestreams earlier in 2026. The Verge's Jess Weatherbed (24 September) and trade write-ups including PPC Land's 25 September Creator Insider recap framed the long-form step as the commercial hinge: someone else's upload becomes inventory inside a second creator's monetised live. Creator Insider's Made on YouTube live segment, posted 25 September, presented the same toolset; Posthype sticks to Macdonald's dated blog for what ships when.

What still is not public matters as much as the headline split. YouTube has not said whether eligible videos are reactable by default with an opt-out, or locked until a creator opts in — "full control" covers both designs. It has not defined what "added view credit" means for the public counter, Analytics, or Partner Program qualified views. It has not said whether Shorts are in or out of the long-form expansion (Macdonald specifies eligible long-form; a creator briefing phrased it more broadly). And it has not addressed how paid-promotion disclosures travel when a sponsored upload plays inside another creator's ad-supported reaction stream, or which ads run around the embedded video.

Adjacent live tools stay later. Live creator matchmaking for Go Live Together and Live showdowns — timed co-host competitions where viewers send chats, gifts, and Super Chats to move a score — are dated to 2027. Neither announcement discloses how ad or gift revenue splits when two live audiences merge on one screen.

Until YouTube publishes the default setting, the view-credit definition, and any brand-disclosure guidance, the hard public facts are Macdonald's 23 September terms: reactors keep live ads and fan funding, uploaders get attribution plus Studio view credit plus a veto, and the long-form Watch With rollout starts later this year.