如果 AC3 是丢失的, 和 Opus 是无损失的( 例如 MP3 {WAV), Opus 并不比 AC3 更好, 您无法收回已经丢弃的信息。 如果 AC3 是无损失的, Opus 是丢失的, Opus 代码压缩; 在 192 kbps, 多数内容的结果是透明的 。
Does the AC3 to Opus converter keep ID3 / metadata tags?
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Yes — title, artist, album, year, track number, and album art are read from the AC3 container and written into the Opus container where the format supports tags. All common targets (MP3, AAC, FLAC, OGG) handle tags fine; raw WAV does not.
我可以批量转换成 AC3 成百上千个文件 Opus 吗?
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Yes — drop a folder of AC3 files in and we process them in parallel. Premium has more parallel workers and no per-file size cap, so a 500-file batch finishes in minutes rather than tens of minutes.
Will the Opus keep the same sample rate as AC3?
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默认是 。 - 48 kHz AC3 保留48 kHz在 Opus 中。 如果您需要降为兼容性样本( 96 kHz 44.1 kHz 用于 CD 燃烧), 样本率选项将在同一编码通行证中采用高质量的重新取样。
Yes — uploaded AC3 files are processed in isolated workers and deleted within minutes. We never play back, store long-term, or share the audio content. The full retention window is in /privacy/.
转换一个 1小时 AC3 到 Opus 需要多久?
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Same-codec re-mux: 10 to 30 seconds. Re-encode to a different codec: typically 10 to 20% of source duration, so a 1-hour AC3 → Opus finishes in 6 to 12 minutes. Batch jobs parallelize across workers for further speedups.
Why is the Opus louder or quieter than the AC3 source?
If the AC3 download is unprotected (no DRM), yes. DRM-encrypted streams (Spotify, Apple Music tracks) are encrypted at the bit level and we cannot process them. Bandcamp, SoundCloud downloads, personal recordings, and podcast files convert cleanly.
