By default a static frame: the WMA file's embedded cover art if present, otherwise a solid background. The frame is held for the full duration of the audio, so the WebM file is a single still image with your WMA audio as the soundtrack — small and fast to encode.
Will the WebM video lose any audio quality versus the WMA source?
Not in this one-step converter — it uses the embedded WMA cover art or a default background. To set a custom still or a looping clip behind the audio, convert WMA to WebM here first, then use /video-editor/ to swap the visual track.
Yes — drop the full set of WMA files in and each becomes its own WebM video in parallel. Premium runs more workers, so a 12-track album finishes far faster than converting each WMA one at a time.
转换 WebM 期间 我的 WMA 文件是否私有?
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Yes — uploaded WMA files are processed in isolated workers and deleted within minutes. We never listen to, retain, or share your audio. The full retention window is documented at /privacy/.
