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I want to use HE-AAC v2 (Parametric Stereo) audio files in one of my applications, but it appears that iOS (as of the latest version) does not support it – those files play back as if they were mono, presumably because the decoder doesn't understand the Parametric Stereo information stored in the file, and cannot reconstitute the two-channel stereo spread.

I've done some Googling around but it's tricky to find specific information on the v2 codec (as opposed to just HE-AAC v1, which does not allow Parametric Stereo), and I'm wondering if there are any valid third-party software decoders available which would allow me to use HE-AAC v2 files in full stereo on iOS.

Alternatively, is there any other feasible solution to this problem, asides from simply using the v1 (non-Parametric) version of the codec to encode my audio files?

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我自己也遇到了这个问题，在尝试做研究时我发现了你的问题，因为我找到了解决方案，所以答案是：你使用的编码器不能正常工作。我曾经将 Premiere Pro 用于 HE-AAC 和 HE-AACv2 音频，但它在 iOS 上无法正常工作。然而，我最终找到了一个在 iOS 上运行的带有 HE-AAC 的编码器（我使用了 EZ CD 音频转换器）。

tl;dr：使用不同的 HE-AAC 支持的编码器，有些编码不正确，iOS 无法正确解码。

于 2021-10-12T20:38:33.087 回答