Was the video against the rules?

Referring to new guidance on manipulated videos, Twitter said it would most likely label the video as misleading. That is, it would if the rule, which goes into effect in March, were already in effect. The company said it would not label Mr. Bloomberg’s video retroactively.

Facebook, which owns Instagram, said it would not remove the video. The company has recently altered its policy on manipulated media to state that Facebook will remove videos that have been edited “in ways that aren’t apparent to an average person and would likely mislead someone into thinking that a subject of the video said words that they did not actually say.”

The companies are less certain of how they will handle Mr. Bloomberg’s hiring of 500 “deputy digital organizers” to recruit and train their friends. (All 500 haven’t been hired yet.) His campaign has said it is paying people to use their own social media accounts to publish content of their choosing to mobilize voters for Mr. Bloomberg.

“We are meeting voters everywhere on any platform that they consume their news. One of the most effective ways of reaching voters is by activating their friends and network to encourage them to support Mike for president,” said Sabrina Singh, a spokeswoman for the Bloomberg campaign.

The Bloomberg team said the people they hired were ordinary Americans, and would not include so-called social media influencers, or individuals with large social media followings. The campaign said the digital organizers would not add disclosures to every post, but they would be directed to clearly identify in their social media profiles that they were affiliated with the Bloomberg campaign.

“We recommend campaign employees make the relationship clear on their accounts,” said Liz Bourgeois, a spokeswoman for Facebook. But if Mr. Bloomberg’s employees do not make clear on their accounts that the campaign paid them, Facebook has no easy way to identify them, she said.

Facebook has also made it clear that influencers who post content in support of Mr. Bloomberg’s campaign must clearly label themselves as being sponsored. The company also is exploring ways in which it can identify and catalog sponsored political content.