1: Choose local M4A files or enter URL of online M4A file. 2: Choose "OPUS" as target format and set options (optional). 3: Click "START CONVERSION" button and wait for conversion to complete.
Choose filesChoose files or enter remote file URLremote file URL
Set conversion options (optional)
File extension: .m4a
MPEG-4 Part 14 or MP4 is a digital multimedia container format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. M4A stands for MPEG 4 Audio and is a filename extension used to represent audio files.
Opus Audio Format
File extension: .opus
Opus is a lossy audio coding format developed by Xiph and standardized by the IETF, designed to efficiently code speech and general audio in a single format, while remaining low-latency enough for real-time interactive communication and low-complexity enough for low end ARM3 processors.