this post was submitted on 09 Feb 2025
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Podcasts are almost exclusively mp3. There is no need for lossless fidelity on those. And when you are subscribed to 200 podcasts like I am a small file size matters. And when listening at 2.5x speed lossless is a complete waste.
All my podcasts appear to use the AAC spoken audio profile? It’s much smaller and cleaner than MPEG layer 3 audio.
Apple broke metadata compatibility with a recent update. The podcast producer I know with an explicit AAC feed decided to just redirect to the MP3 feed. Unrelated to that, they also increased the MP3 bitrate for better audio quality. The increased file size doesn't really matter that much compared to 15 years ago and people without unlimited data can just set their automated syncs to WiFi only.