Opus MP3 Converter is a powerful audio converter. It allows converting Opus audio to MP3 easily. Opus is a totally open, royalty-free, highly versatile audio codec. Opus is unmatched for interactive speech and music transmission over the Internet, but is also intended for storage and streaming applications. Key features: Batch-convert unlimited Opus files in the fast and easy setup interface; Convert Opus files into custom file sizes for use with portable MP3 players; You can customize the size of output file and its Bitrate will be calculated automatically; Multithreading are supported and the more files you convert the faster; Easy to use - Just two clicks, everyone can become the master of Opus MP3 Converter; Automatically shutdown the computer after conversion; Many settings are adjustable, such as audio size, bit rate, frame rate, so that the output MP3 audio will match most portable MP3 player.