Free online OPUS to XML converter

Audio cataloging, analysis, and archiving tools may require OPUS stream details in XML rather than an audio file. The conversion normally produces structured metadata—codec, duration, bitrate, channels, and sample rate—not playable audio encoded inside XML.

What the OPUS format is

OPUS is a lossy audio codec designed for speech and music, commonly stored in an Ogg container with the .opus extension. Web browsers, voice-chat applications, internet telephony systems, screen recorders, and media tools create or export OPUS files. The format supports low-latency speech at low bitrates and higher-quality music at larger bitrates.

What the XML format is

XML is a text-based markup format for representing structured data. In audio workflows, XML can store technical metadata, chapter markers, cue points, annotations, transcripts, loudness measurements, or catalog records. XML has no single universal audio schema and is not an audio codec, so an XML file generally cannot replace an OPUS file for playback.

How to actually convert OPUS to XML

Extract audio metadata with FFprobe

FFprobe, included with FFmpeg, is the most direct desktop method for creating XML that describes an OPUS file:

1. Install FFmpeg so the ffprobe command is available.
2. Open a terminal in the folder containing the source file.
3. Run ffprobe -v quiet -print_format xml -show_format -show_streams input.opus > output.xml.
4. Open output.xml in an XML editor or import it into the cataloging application.

The resulting document includes stream and container information such as the Opus codec, channel count, sample rate, duration, bitrate, tags, and time base. Use -show_packets or -show_frames only when packet- or frame-level data is required, because those options can create very large XML files.

Use the online converter

You can convert the file on 101convert.com for free without installing software: open the OPUS-to-XML converter, upload the .opus file, start the conversion, and download the generated XML. Check the resulting fields against the requirements of the application receiving the file.

Create XML for a transcript or annotation

FFprobe does not transcribe speech or place decoded samples into XML. For those purposes, first decode or transcribe the OPUS file with an audio or speech-recognition application, then export the result using the target application’s required XML schema. Without a defined schema, choose field names, time units, character encoding, and speaker or annotation structure before automating the export.

Quality, compatibility, and limitations

Metadata extraction is lossless because it reads information from the source without re-encoding audio. XML generated by FFprobe is FFmpeg-specific; another program may require a different schema, namespace, timestamp format, or mandatory fields. Validate output.xml against the receiving application’s schema when one is provided. If the target requires audio samples rather than metadata, XML alone is unsuitable; retain the OPUS file or convert it to the target audio format separately.