What does Universal Video Converter do?
Tubelexity is a browser-based video converter for creators who need a different container, playback codec, resolution or audio-only file. It can remux compatible streams without encoding, or re-encode when the source codec does not fit the target format. The result stays watermark-free and is prepared entirely in the browser.
How to use Universal Video Converter
- 1Choose a MOV, MKV, WebM, AVI or MP4 source.
- 2Select MP4, WebM, WAV or MP3 output and review whether fast remux is available.
- 3Set resolution, frame rate, quality, bitrate and audio options when re-encoding.
- 4Convert locally, preview the result and download it.
Supported inputs and outputs
Inputs
MOV, MKV, WebM, AVI, MP4, other FFmpeg-decodable video containers
Outputs
MP4, WebM, WAV, MP3
Practical uses
- Preparing editing exports for browser playback
- Changing a container before uploading
- Creating audio-only versions
- Normalizing resolution and frame rate
Browser and media limitations
- Browser preview does not support every source codec.
- Remuxing is offered only for detected compatible streams.
- Large files can exceed browser memory.
- Re-encoding changes quality and takes longer.
How local processing works
Processing uses FFmpeg.wasm locally in this browser. The media engine downloads on first use, but Tubelexity does not upload the selected media to a processing server.
Frequently asked questions
Can I convert a video for free?
Yes. Tubelexity converts supported local files without credits, an account or a watermark.
What is the difference between remuxing and re-encoding?
Remuxing copies compatible streams into a new container. Re-encoding decodes and creates new streams, allowing broader compatibility but changing quality.
Does my video get uploaded?
No. Conversion runs in the browser with FFmpeg.wasm.
Why can some files convert but not preview?
FFmpeg can decode some containers and codecs that the browser's native player cannot display.