The phrase "appears in the frame" is correct and usable in written English.
It can be used when discussing visual media, such as film, photography, or video, to indicate that something is visible within a specific scene or shot.
Example: "In the final scene, the main character appears in the frame, symbolizing their return to the story."
Alternatives: "is visible in the shot" or "shows up in the scene".
As the journalists listen respectfully, Swann's face appears in the frame and announces solemnly: "He's the most boring player I've ever played with".
Rossi is unabashedly enamored with the fashion titan: every time she appears in the frame, his camera zooms in on her to catch her every exacting expression.
Just seconds later in the Star Wars scene, the actress who played the woman (Fiona Johnson) appears in the frame briefly (below), offering Anakin a seductive look.
His attitude to these characters remains a mystery, even though he frequently appears in the frame, asking questions or directing traffic or just looking pensive.
She appeared in the frame and said, "He does not want to speak anymore".
Every time the Nazis appear in the frame, we know that we're all going to be laughing at the end of it".
The three men occupy the screen one at a time, almost never appearing in the frame together, even as their fates become ever more intimately entwined.
By the freestyle leg he was so far ahead of his nearest competitor, no other swimmer appeared in the frame as the television camera pulled back to show Lochte's final 50 meters.
He initially looked as if he didn't belong in a club setting, but then moved and bobbed with such confidence that, more than anyone else who appeared in the frame, he seemed to know what was about to happen.
To find a face in the crowd: Facebook will soon roll out its facial-recognition feature, which scans images and suggests the names of people who appear in the frame.
The FAST AF Tracking System features 35 separate focus points spread over nearly the entire sensor, enabling pin-point focusing accuracy on small subjects wherever they appear in the frame.
