TeraConvertTeraConvert

Video Converter for Mac

Convert MP4, MOV, MKV, and WebM on your Mac with nothing leaving the machine. The desktop app adds the formats browsers cannot decode.

Conversion Successful
100% local. Your file is processed in this tab and never uploaded.

Why convert on your Mac instead of online

Video is where uploading stops being a philosophical concern and starts being a practical one. A 4K clip off a phone runs several gigabytes, and pushing that to a converter site means an hour of upload, an unknown wait in a queue, and a download at the end, all for a job your Mac can do in the time it takes to make coffee. Hardware decoding is right there in the machine. This page uses it.

The browser reads MP4, MOV, MKV, and WebM, writes any of those plus TS or GIF, and pulls out the audio track when that is all you want, up to 500 MB per file. AVI, WMV, FLV, and the older camcorder formats need native FFmpeg, so those route to the desktop app, which also drops the size limit and converts whole folders in one pass. Trim, crop, rotate, resize, and quality all live in the editor before you convert.

Popular video conversions

Frequently Asked Questions

Does the video really stay on my Mac?
Yes. The browser decodes and re-encodes it with WebCodecs inside the tab, so no frame is uploaded. The desktop app does the same thing with FFmpeg on disk.
Which formats convert in the browser?
MP4, MOV, MKV, and WebM go in; MP4, MOV, MKV, WebM, TS, and GIF come out, along with MP3, WAV, FLAC, AAC, or OGG when you only want the audio. AVI, WMV, FLV, and MTS need the desktop app.
Is there a file size limit?
500 MB in the browser, because the tab has a memory ceiling it cannot lie about. The desktop app has no limit and is the better tool for 4K footage.
Can I compress a video rather than change its format?
Yes. Convert MP4 to MP4 and set a lower quality level or a target size in the editor. The output card shows an estimate before you start.
Will it add a watermark?
No. Nothing is stamped on the output, at any tier, and there is no trial watermark to remove later.

Got 4K footage or a full card to convert?

The desktop app converts natively through FFmpeg with no size cap, keeps a whole folder running in one pass, and never uploads a frame.

Get TeraConvert for MacmacOS on Apple Silicon. One-time Pro purchase, 14-day money-back guarantee.