this post was submitted on 19 Jun 2026
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Can you provide a citation for that? According to my understanding, 320 kbps is the highest the codec can go, a 320k VBR file might drop to a lower bitrate when appropriate but as far as I'm aware it will never exceed 320k.
It can go higher - LAME for example can encode up to 640kbps - but this is non-standard. Decoders are only required to support 320kbps maximum.
However, MP3 CBR uses a bit reservoir of max 4088 bits that can be donated from surrounding frames to encode particularly complex sounds.
It's been probably like a decade (or longer. Shit) since my private music tracker days, but I know back then that V0 was the highest quality level for variable bitrate. Maybe that's what they meant?
Not sure if it ever went above 320 though in that case