OPUS to FLAC | Fast & Free & Secure
Convert OPUS to FLAC online in seconds. No signup. Secure processing; files auto-delete in ~2h. Works on mobile & desktop.
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Just upload your file and choose the format you want to convert it to. Our system automatically recognizes the input format, so you can focus on getting the output you need.
What is Opus?
Opus is a modern, royalty-free audio codec standardized by the IETF (RFC 6716) that excels at both speech and full-band music. It blends Skype’s SILK and Xiph’s CELT technologies to deliver transparent quality from very low bitrates (≈6 kbps) up to 510 kbps, with ultra-low latency using 2.5–60 ms frames. Opus supports variable bitrate, constant bitrate, and constrained VBR; features include packet-loss concealment, in-band forward error correction, and adaptive complexity for real-time networks. Files typically use the .opus extension in an Ogg container, and streams appear in WebM/Matroska. Native support in browsers and WebRTC makes Opus the default for voice chat, calls, gaming, and live streaming; many players and OSes also decode it. Compared with MP3/AAC at the same size, Opus usually sounds cleaner, especially for speech.
What is FLAC?
FLAC (Free Lossless Audio Codec) is a compression format that reduces file size without losing any audio information, so decoded playback is bit-for-bit identical to the source. Typical savings are 40–60% compared with uncompressed WAV/AIFF, while preserving metadata like artwork, lyrics, ReplayGain, and tags. FLAC supports up to 32-bit depth and high sample rates (e.g., 192 kHz), streams efficiently, and is error-resilient thanks to checksums and frame-based structure. Files usually carry the .flac extension and are widely supported across players, phones, smart speakers, and media servers. It’s ideal for archiving CDs, high-res downloads, and production stems when you don’t want generational loss. Conversions between FLAC and ALAC are lossless; for portable or streaming bandwidth limits, you can transcode FLAC to AAC or MP3 while keeping the FLAC as your master.
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Convert Your Files Instantly – Fast, Secure & Free
Welcome to ConvertSea, the ultimate online tool to convert your files with speed, accuracy, and zero hassle. Whether you're changing image formats, converting videos, editing documents, or extracting audio, our platform delivers instant, high-quality results across hundreds of file types.
No downloads, no registration, and no watermarks — just upload your file, choose the format you need, and download your converted file in seconds.
From PDF to Word, MP3 to WAV, JPG to PNG, or MP4 to MOV, ConvertSea ensures that your content stays clean, secure, and exactly how you want it.