B4J Question MP3 to wav conversion problem using Jave2 FFMPeg Library

[zed]

Hello,
I am trying to convert an mp3 file to a wav file using the Jave2 FFMPeg Library by @Stevel05.

[B4j] Jave2 FFMPeg Library

After using FFMpeg from the command line, I came across Jave2 (Java Audio Video Encoder) a java wrapper based on FFMpeg. Useful to integrate FFMpeg into your app without having to use jShell. The library jars are quite large, so if you only want to use it for the odd conversion it might be...

www.b4x.com

Dependencies are ok but it doesn't work.

Possible to get help. THANKS

Here is the log

Waiting for debugger to connect...
Program started.
Encoding complete false
error Exception : argument type mismatch

and the code

#Region Project Attributes
    #MainFormWidth: 600
    #MainFormHeight: 600
#End Region
#AdditionalJar: jave/jave-core-3.3.1
#AdditionalJar: jave/jave-nativebin-win64-3.3.1
#AdditionalJar: jave/slf4j-api-2.0.0
#AdditionalJar: jave/slf4j-nop-2.0.0

Sub Process_Globals
    Private fx As JFX
    Private MainForm As Form
    Private xui As XUI
    Private Button1 As B4XView
End Sub

Sub AppStart (Form1 As Form, Args() As String)
    MainForm = Form1
    MainForm.RootPane.LoadLayout("Layout1")
    MainForm.Show
    
    Dim SourceFile As String = "D:\test.mp3"
    Dim TargetFile As String = "D:\test.wav"
        
    Dim AudioAttrs1 As AudioAttributes
    AudioAttrs1.Initialize
    AudioAttrs1.SetCodec("pcm_s16le")
    
    Dim MO1 As MultimediaObject
    MO1.Initialize
    MO1.Create(SourceFile,"")
    
    Dim EncAttrs1 As EncodingAttributes
    EncAttrs1.Initialize
    EncAttrs1.SetOutputFormat("wav")
    EncAttrs1.SetAudioAttributes(AudioAttrs1)
'       
    Dim Enc1 As Encoder
    Enc1.Initialize(Me,"Enc")
    Enc1.Encode3(MO1,TargetFile,"",EncAttrs1)
    
    Try
        Wait For Enc_Complete(EndedOK As Boolean, Error As String)
        Log("Encoding complete " & EndedOK)
        Log("error "& Error)
    Catch
        Log("Encoding failed " & LastException)
        
    End Try
End Sub

Private Sub Enc_Event(MethodName As String,Args() As Object)
    
    Select MethodName
        Case "message"
            Log("Message " & Args(0))
        Case "progress"
            Log("Progress " & Args(0))
        Case "sourceinfo"
            Log("Source Info " & Args(0))
    End Select
End Sub

 

[Daestrum]

It's probably not the cause, but you define the encoder as Enc1, but wait for Enc_Complete also Enc_Event. Should they not be Enc1 ?

 

[zed]

Exact. Stupid mistake.
I have no more log, but no output wav file.
That's another problem

 

[Daestrum]

I would try putting a file in this line where you just have ""

Enc1.Encode3(MO1,TargetFile,"",EncAttrs1)

The original java code was encode(srceFile, destFile, attributes)
maybe it just needs a filename or another file object there.

 

[zed]

This is the original code.

Enc1.Encode3(MO1,TargetFile,"",EncAttrs1)

I tried putting the folder and the file separately, but it doesn't change anything.
I also tried with other file formats and no output file.

 

[stevel05]

Try running it in release mode. Anything that uses threads cannot be used in debug mode.

 

[zed]

Try running it in release mode.

It works great in release mode.
Thank you so much.