output increases size significantly

[geddski]

I'm testing this lib out by combining two mp3s. One is 22kb and the other is 37kb. The output mp3 is 113kb. I'm using 0 gap for testing purposes. What could be increasing the output file size so much?

[geddski]

testing on an entire directory of mp3's takes it from 1.3MB separate files to 2.8MB combined.

[ramilushev]

Check the bit-rate you are exporting at. Does it match the mp3s you're converting? Had the same issue with .ogg files, so I equalized the export settings and it worked.

[monteiz]

@geddski try these settings:

{
    channels: 2,
    samplerate: 48000,
    vbr: 4
}

The key is the vbr option. A value of 4 should slightly reduce the size of the file, while preserving the quality.

channels and samplerate are used to create the sample (a pre-conversion to a raw file). Using these values, you're sure that no quality is lost during the process.