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About this tool
Practice lip reading with a zoomed webcam view of the mouth and slow replay.
Lip-Read Practice Mirror shows your own camera feed flipped left-to-right like a mirror, magnified from 1× up to 4× so the mouth fills the frame, and can record a short clip that replays in slow motion between 0.35× and 1× normal speed. It is a practice aid for people learning to lip-read or working on their own mouth shapes with a speech therapist's exercises. The camera starts only when you press Start camera, and clips stay in the page as a temporary object URL — nothing is uploaded or saved to disk.
Open Lip-Read Practice Mirror on AltFTool — it loads instantly in your browser.
Press "Start camera" and grant camera permission; the live feed appears flipped left-to-right like a mirror and the button changes to "Stop camera".
Drag the "Mouth-area zoom" slider between 1x and 4x (it starts at 1.6x) so the mouth fills the frame, then press "Record short practice" and "Stop recording" when the phrase is done.
Set "Replay speed" anywhere from 0.35x to 1x (0.60x by default) and the clip plays back below the live mirror at that rate — video only, held as a temporary in-page URL that is discarded when you leave.
The feed is flipped so left stays left, then magnified up to 4×, which a bathroom mirror or a plain video call cannot do.
Playback runs as low as 0.35× normal speed, and the rate is re-applied if the player tries to reset it.
Recording uses the browser's own MediaRecorder and the result is held as a temporary in-memory URL that is released when you leave.
Down to 0.35× normal speed, adjustable in 0.05 steps up to 1× (full speed), with 0.6× as the starting value. That is slow enough to separate the closing and opening phases of a lip movement without the frames becoming unreadable.
No. The camera stream stays in the browser, the recording is assembled locally by MediaRecorder, and the replay plays from a temporary object URL that is discarded when you close or leave the page. Nothing is written to a server or saved as a file unless you download it yourself.
From 1× to 4×, in 0.1 steps, starting at 1.6×. Because the zoom scales the live video rather than the camera's optics, very high magnification will look soft on a low-resolution webcam — around 2× is usually the practical limit for a laptop camera.
No — the capture requests video only, so replays are silent by design, which keeps the focus on the visual mouth shape. Camera access also requires your explicit permission each session and depends on your browser supporting getUserMedia and MediaRecorder.