Learn to customize the MP3 audio format settings in a Video Converter software.
By default, the output MP3 audio will be saved as 44,100 Hz, 128 kbps stereo. To change it:
In the installation folder of Videozilla, eg. C:\Program Files\Videozilla or C:\Program Data\Videozilla2 if you are using Windows Vista, 7, 8, 10 or 11 double click on settings.ini
To change the audio channel, look for MP3Channel=2 and use the value 1 for mono and 2 for stereo
To change the audio frequency and bitrate, look for MP3Profile=12; you can change the value to the following profile:
1: Frequency: 48000 Hz, 320 kbps
2: Frequency: 48000 Hz, 256 kbps
3: Frequency: 48000 Hz, 224 kbps
4: Frequency: 48000 Hz, 192 kbps
5: Frequency: 48000 Hz, 160 kbps
6: Frequency: 48000 Hz, 128 kbps
7: Frequency: 44100 Hz, 320 kbps
8: Frequency: 44100 Hz, 256 kbps
9: Frequency: 44100 Hz, 224 kbps
10: Frequency: 44100 Hz, 192 kbps
11: Frequency: 44100 Hz, 160 kbps
12: Frequency: 44100 Hz, 128 kbps
13: Frequency: 32000 Hz, 320 kbps
14: Frequency: 32000 Hz, 256 kbps
15: Frequency: 32000 Hz, 224 kbps
16: Frequency: 32000 Hz, 192 kbps
17: Frequency: 32000 Hz, 160 kbps
18: Frequency: 32000 Hz, 128 kbps
Click on File menu and Save.