JAVE (Java Audio Video Encoder) library exception only on Linux (CentOS 7)

Question

I'm using JAVE (Java Audio Video Encoder) library and the developed application is on windows. On windows the conversion of an .mp3 file is working fine but when I deployed on linux (CentOS 7) an exception is thrown.

As I understand JAVE has also a wrapper around an ffmpeg executable.

Here is my code:

try {
        File source = new File(sourceFile);
        File target = new File(targetFile);

        final AudioAttributes audio = new AudioAttributes();
        audio.setCodec("libmp3lame");
        audio.setBitRate(88000);
        audio.setChannels(2);
        audio.setSamplingRate(44100);   

        EncodingAttributes attrs = new EncodingAttributes();
        attrs.setFormat("mp3");
        attrs.setAudioAttributes(audio);

        Encoder encoder = new Encoder();
        encoder.encode(source, target, attrs);
} catch (EncoderException ex) {
    throw ex;
}

Exception:

...

Caused by: it.sauronsoftware.jave.EncoderException: Error while opening codec for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height
    at it.sauronsoftware.jave.Encoder.encode(Encoder.java:926)
    at it.sauronsoftware.jave.Encoder.encode(Encoder.java:713)
    at com.hft2.ejb.util.Mp3JaveEncoder.encode(Mp3JaveEncoder.java:36)
    ... 206 more

Update

Here is the official page: http://www.sauronsoftware.it/projects/jave/

Full exception log: https://jpst.it/1678l

Does anyone have any idea?

@M.Prokhorov I don't know. **JAVE** is a wrapper over `ffmpeg`; but should I define on linux server that used codec (`libmp3lame`)? — Radu Linu, Oct 13 '17 at 11:12
I'm not sure what you're asking. You told it which codec to use explicitly. But does it actually have that codec installed? Depending on how implementation is done, it might be unable to differenciate between invalid codec parameters and missing a codec altogether. — M. Prokhorov, Oct 13 '17 at 11:16
@M.Prokhorov Yes, the codec `libmp3lame` in included in JAVE library. — Radu Linu, Oct 13 '17 at 11:20
@Mulvya i don't have a `ffmpeg` log. Do you know how can I activate this in JAVE? Or where should be generated? — Radu Linu, Oct 13 '17 at 11:30

Radu Linu · Accepted Answer · 2017-10-13T13:24:05.840

I've changed the bitRate value of the audioAttributes object from 88000 to 96000 based on Sampling rates documented on the following page: https://micropyramid.com/blog/understanding-audio-quality-bit-rate-sample-rate/

Using the value of: 96000 as bit rate resolved my issue on linux environment. Very interesting that on windows worked fine with the value of 88000.

Did some tests and here is the result:

Linux supported bitRate values: 128000, 96000, 64000, 56000, 32000;
Linux not supported bitRate values: 88000, 24000, 16000;

Thanks for support!

JAVE (Java Audio Video Encoder) library exception only on Linux (CentOS 7)

Update

1 Answers1