Formats

What a file format actually does, and when it is the wrong choice.

2 articles

Your MMF ringtone has almost no sound inside it. That's why it won't convert

An MMF ringtone is a SMAF score for a synthesizer chip, with almost no recorded sound inside. Here's what we found in nine real handset files, and how to convert one.

Vashist Nagori·Aug 11, 2026·6 min read

Formats

Does converting MP4 to MP3 lose quality? We measured it

The audio in an MP4 is usually AAC, and converting AAC to MP3 re-encodes it with a second lossy codec, so a little quality goes every time. Here's what we measured with our own converter, and the one case where you can skip the loss entirely.

Vashist Nagori·Jul 24, 2026·4 min read

Formats

Articles in Formats

Your MMF ringtone has almost no sound inside it. That's why it won't convert

Does converting MP4 to MP3 lose quality? We measured it