How to put text behind yourself in a talking-head video
Upload the footage and say what the words behind you should be. Vizard Agent keys you out of the shot, generates a background with nobody in it, and layers large type in between, so the letters pass behind your shoulders and in front of the room.
What do you type into Vizard Agent?
Describe the three layers. Vizard Agent handles the keying and the compositing, so what it needs is the copy, the setting and the mood. Say "behind me" or the words become a caption, keep the text to two or three words, and say the background must have no people in it, because generated rooms come with occupants.
Prompt
What does Vizard Agent actually do?
It builds three layers: a background, large type, and you cut out and placed on top. The hard part is the cutout. A background-removal pass that returns nothing looks like a broken tool and is almost always a rotation problem, so Vizard Agent tests that rather than assuming the keying failed. In the session behind this article it:
- Inspected the video, 1920x1080 HEVC at 30fps and 127.74 seconds long, transcribed the speech and checked the speaker's position on a preview grid.
- Removed the background and generated a studio background, then regenerated it with a negative prompt because the first one contained people.
- Found no visible content in the keyed video, tested a frame over a red background, scanned for frames with any content and read the processing log.
- Extracted a raw frame without auto-rotation, confirmed the file was stored sideways, and checked a test clip rotated ninety degrees was upright.
- Transcoded the whole video upright at 1080x1920 and ran the background removal again, which keyed cleanly.
- Chose a premium sans-serif from the installed fonts and composited a test frame with the type behind the cutout before scaling everything to match.
When does this not work well?
The whole effect rests on a clean cutout, and cutouts have honest limits. Busy backgrounds make the key pick up edges it should not, hair and glasses are the hardest edges to cut, and a dark top on a dark wall will not separate. Long words disappear behind the subject. Vizard Agent shows the keying over a flat test colour before it builds anything.
Common questions
Do I need a green screen? No. Vizard Agent keys from an ordinary room, though an even background helps.
Why did my background removal come back empty? Usually rotation. Vizard Agent checks whether the file is stored sideways.
How many words work? Two or three. Vizard Agent keeps them large enough to read around you.