What does Shorts Converter do?
Tubelexity converts horizontal, square or portrait video into vertical YouTube Shorts and other social ratios. You choose the crop position, zoom and background rather than relying on face tracking. The export is rendered locally to match the preview, with 9:16, 1:1 and 4:5 layouts available without a watermark.
How to use Shorts Converter
- 1Load a local MP4 or MOV video.
- 2Choose 9:16, 1:1 or 4:5 and an output resolution.
- 3Select crop, fit, blurred or solid background mode, then position the video.
- 4Check the safe-zone overlay and export the framed MP4.
Supported inputs and outputs
Inputs
MP4, MOV
Outputs
MP4 (H.264/AAC)
Practical uses
- Turning a landscape tutorial into a Short
- Creating square social clips
- Adding a blurred background behind wide video
- Keeping text away from Shorts controls
Browser and media limitations
- Framing is manual; there is no face tracking.
- Uncommon rotation metadata can render differently between decoders.
- Large 1080 × 1920 exports require substantial memory.
- Background blur increases processing time.
How local processing works
Processing runs locally in your browser with FFmpeg.wasm. The media engine is downloaded on first use, but your media is not sent to Tubelexity or a processing server.
Frequently asked questions
Can I convert a horizontal video to YouTube Shorts?
Yes. Choose 9:16, position the source manually and export a vertical MP4.
Does Tubelexity crop faces automatically?
No. The preview provides manual drag, position and zoom controls so you decide the framing.
Can I avoid cropping the video?
Yes. Fit with borders, blurred background and solid background modes preserve the full source frame.
Does the exported video match the preview?
The same crop calculations drive the preview and export, although codec and rotation differences can affect uncommon files.