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Topic: MP3 VBR capping to 320kbps? (Read 1331 times) previous topic - next topic
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MP3 VBR capping to 320kbps?

When ever I try a something heavy at V2 I noticed the bit rate on foobar shoots to 338kbps+ for 2 seconds?. Are they using a Bit reservoir as a work around for higher than 320kbps because much of the songs/albums size matches AAC/Vorbis at 384kbps.


Re: MP3 VBR capping to 320kbps?

Reply #1
It shoots when you seek in the track, thus it's a foobar bug. LAME is capped to 320 kbps by default because it's the limit of MPEG 1 Layer 3 standard.
Opus VBR 256 + SoX

 

Re: MP3 VBR capping to 320kbps?

Reply #2
Are they using a Bit reservoir as a work around for higher than 320kbps
Yes, LAME does that, on CBR 320 kbps as well. That doesn't affect foobar bitrate meter, it's dead 320 kbps all the time because all frames are 320 kbps, but the efficient bitrate may jump up to 450 kbps on transients. Typical MP3 behaviour.
Opus VBR 256 + SoX