Converting Opus to WebM re-encodes your Opus audio into a WebM file. Upload the Opus, pick WebM and download the result. The WebM holds the audio only: no picture track is added.
Why would I convert Opus to WebM?
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You move your content from the Opus format into WebM so it works in the apps, devices or workflows that prefer WebM.
Will converting Opus to WebM reduce quality?
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Animated and wrapped formats trade some fidelity for a small file. For an animated WebM, a larger width and a higher frame rate keep more detail at the cost of size.
How long does a Opus to WebM conversion take?
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It depends on the size and length of the file. Small documents and images are usually ready quickly. Long videos take the longest, because most video conversions re-encode every frame.
Which WebM settings should I choose?
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Pick WebM when your target app or device requires it; otherwise choose the most widely-supported option in that format family.
Is the Opus to WebM converter free?
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Yes. One conversion an hour is free, with no account needed, for a file within the free size limit. A paid plan removes the hourly limit and the size limit, and lets you add several files to one job.
How large a Opus file can I convert to WebM?
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Free conversions have a size limit per file, set by the type of file, and the page tells you when a file is over it. A paid plan removes that limit, so much larger files can be converted.
Can I convert several Opus files to WebM at once?
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Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.
Do I need to install any software to convert Opus to WebM?
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No. The Opus to WebM conversion runs on our servers, so nothing needs installing: upload in the browser, convert, download.
Can I convert Opus to WebM on my phone?
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Yes. WEBM.to runs in any modern mobile browser, so iPhone, iPad and Android users can convert Opus to WebM without an app. The WebM result downloads straight to your device.
Are my Opus files kept private during conversion?
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Uploaded files are processed on our own conversion servers, nobody looks at them, and they are not shared. The upload and the converted file are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.
Do I need an account to convert Opus to WebM?
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No account is required for basic Opus to WebM conversions — you can convert immediately. A paid plan removes the hourly limit and the size limit and allows several files in one job.
Opus 是一种开放、免版税的音频编解码器，可为语音和一般音频提供高质量的压缩。它适用于各种应用，包括 IP 语音 (VoIP) 和流媒体。
