Why can I only use MP3 56KB/s on 22050hz?

[george_zhu]

I captured video from a video capture card with audio at 44100khz CD quality
in VirtualDub? But when I want to compress it, the audio option in MP3 only
has the maximum 56kB/s with 22050Khz. I want to do a 128KB/s with 44100.
Why? I got a new computer recently and this is the first time I do video
stuff. Is that something wrong with the MP3 codec? Or something else?

[whomacuddy]

You possibly only have the windows included codec for MP3 which allows only this as the highest bitrate you can obtain a number of codecs that allow you to encoded MP3 streams at higher bitrates a useful tool is the Universal AV Codec package which contains a number of these MP3 codec that can support 44.1KHz and 48KHz Audio Sample Rates plus bitrates as high as 320KBps

[Baldrick]

Read this
https://www.videohelp.com/forum/viewtopic.php?t=193866