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Lossy conversion cannot restore detail missing from the source. Compression presets for lossless formats change file size and processing time, without reducing sound quality.
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OPUS → MP3
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OPUS → MP3: an audio copy for everyday playback
The first audio stream is encoded as lossy MP3. Re-encoding cannot recover detail already missing from OPUS. Keep the original and compare duration, channel balance and sound.
Choose a readable OPUS recording.
Wait for conversion and download MP3.
Play the beginning and end; check duration and channels.
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