.Opus to .Mp3 or .M4b not complete

[Fade1973]

I have noticed this issue when converting opus files to mp3 or m4b that is not file size dependent but length dependent. Here is what i mean a 76mb opus file with a length of 7Hr 24min  length ( ie. audiobook) after converting to ether mp3 or m4b the completed file is 298mb and 3hr 6min .mp3 in this example M4b does the same. settings are default. Any ideas ? 

[elk]

You may try these steps:

Uninstall Switch, then delete 3 folders named "Switch" and 1 named "Components" from these locations:
**C:\Users\<username>\AppData\Roaming\NCH Software\Switch\
**C:\Program Files (x86)\NCH Software\Switch\
**C:\Program Files (x86)\NCH Software\Components
**C:\ProgramData\NCH Software\Switch\
**If you can't find any of the folders, just continue. 

After that, restart your computer and reinstall the program using this link: https://www.nch.com.au/components/switchsetup.exe

Once done, restart your system one more time and try again.

[IRM]

Please also try to go to encoder options, change the bitrate or the quality of the new file created in oder to apply changes on the final result of the file and adjust the file size.