# Convert MKV to MP4 on Mac, offline in batches

> Convert MKV to MP4 on Mac. H.264/H.265 with quality control, batch processing, fully offline. No watermark, no file-size limit. One-time $29.

Source: https://picmal.app/convert/video/mkv-to-mp4

## Why convert MKV to MP4?

MKV files are popular for high-quality video, but many players, TVs, and editors can't open them. Converting MKV to MP4 (H.264) gives you a video that plays on every device, browser, editor, and platform.

- Re-encode with H.264 or H.265, with CRF quality control
- Shrink file size with codec and frame-rate options, or keep it visually lossless
- Runs entirely on your Mac, no uploads, no watermark, no file-size limit
- Batch convert many MKV files at once
- One-time $29, no monthly subscription

## FAQ

### How do I convert MKV to MP4 on Mac?

Open Picmal, drag your MKV files into the window, choose MP4 as the output and set your codec and quality, and click Convert.

### Can I batch convert multiple MKV files at once?

Yes. Drag in as many MKV files (or a whole folder) as you like and Picmal converts them all to MP4 in one pass, each with its own progress.

### Does converting MKV to MP4 reduce quality?

Only as much as you choose. Picmal exposes a CRF quality slider, at CRF 18–20 the result is visually lossless. You can also trade quality for a smaller file when you need it.

### Will the MP4 play on my iPhone, Windows PC, and the web?

Yes. Picmal defaults to H.264 inside an MP4 container, the most widely supported combination.

Get Picmal: https://picmal.app/download