Does the WMA to AIFF converter keep ID3 / metadata tags?
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Yes — title, artist, album, year, track number, and album art are read from the WMA container and written into the AIFF 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 WMA 成百上千个文件 AIFF 吗?
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Yes — drop a folder of WMA 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.
Yes — uploaded WMA 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 WMA 到 AIFF 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 WMA → AIFF finishes in 6 to 12 minutes. Batch jobs parallelize across workers for further speedups.
Why is the AIFF louder or quieter than the WMA source?
If the WMA 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.