否。调整 Opus 量无需账号即可免费使用，不会向音频中添加任何内容。上传的文件和结果会在任务完成约 24 小时后自动删除，这段时间足够您下载结果。
调整 Opus 量 是否有文件大小限制?
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是的:free accounts process audio up to 15 MB per file, which at typical bitrates is several hours of material; ffmpeg does the decoding and encoding, exactly as it would on a desktop。这是网站在视频之后最慷慨的上限, 音频工作很少能进入它。
