Editing5 October 2026·3 min read

What Tella's editor can't do after you record

Tella's help centre says you cannot add your screen or camera to a clip afterwards, record a voice-over onto it, or blur the camera background in the editor. Plus a G2 reviewer's note on the exported background, and what Prequel's editor does with tracks.

Musthaq Ahamad

Building Prequel

Tella's editor is built around what you record, and its help centre is direct about the things you cannot change afterwards. These are the ones people run into, in Tella's own words.

You cannot add what you forgot

"I forgot to share my screen (or turn on my camera). Can I add it afterwards? Not to the same clip."

Tella's reason: when you record screen and camera together, "the clip contains two tracks, and layouts arrange those tracks. An uploaded file, or a screen-only or camera-only recording, is a single track. Layouts can only arrange tracks that belong to the same clip, and one clip cannot be layered on top of another."

You can put a second recording in the other slot, but it "plays from the start of the section you put it in and is not synced to the clip automatically."

You cannot record a voice-over onto a clip

"Can I add a voice-over or an audio file to an existing video? You can add an audio file, but you cannot record a voice-over onto a clip inside Tella."

Camera blur is a recording-time setting

"Set your background before you start recording. ... Blur cannot be added in the editor afterwards." Blur and highlight in the editor work on footage in a layout's Screen slot, and media in the Camera slot is unaffected. The blur options also differ by app: the Mac app uses macOS video effects, and the Windows app and Safari have no background effects.

There is one music track

"Background music applies to the whole video, not to a single clip. There's one background track for the video, and it plays across every clip."

The exported background

A product specialist reviewing Tella on G2 in April 2026 gave it 5 out of 5, and wrote that they did not like that when exporting you cannot have just the video on its own and always have to include a background. They also wished they could remove elements from the video, or at least hide them, since blurring was the only tool offered.

Read it on G2

Tella's help centre has a separate page on exporting raw camera and screen recordings. Those are the source files without your edits, which is not the same as your edit without the background.

Why this matters

None of these is a bug. They are documented boundaries, and the useful thing is to know them before you record, because the decision about the camera, the voice-over and the blur has to be right before you press the button. Related pages cover the audio side: Tella audio out of sync, and for the recording side your iPhone demo records as a black rectangle. If you cannot find the recording to edit it at all, can't find your Tella recording is the page, and Tella export limits lists what each plan exports.

Tracks you place afterwards

Prequel records the screen, camera, microphone and system audio as separate tracks. The camera is placed in the finished video afterwards, in the editor, so where it sits is decided after you record. The Layout panel offers 14 layouts per clip across screen and camera, camera only and screen only, and each clip can have its own.

The Audio panel gives the microphone and the Mac's sound an Include switch and a Volume each, and noise reduction on the microphone. See layout, camera and audio.

Record once in Prequel and decide the layout afterwards.

Prequel needs an Apple Silicon Mac on macOS 14 or later. Download Prequel for Mac and try it free for 7 days, with no watermark on anything you export. After that it is $9 a month or $29 once. See what it costs.