B4J Question [SOLVED ] Audio File Properties

[Peter Lewis]

Hi All,

Is there a way to get the Audio file properties of an mp3 audio file ? I am mainly looking for the bit rate and the total time. These are in the properties of the file but not in the ID3 tag V1 or V2

ID3 v2 area

ID3 v1 area

Thank you in advance

 

[Erel]

#AdditionalJar: mp3agic-0.9.1
Sub Process_Globals
    
End Sub

Sub AppStart (Args() As String)
    Log("Hello world!!!")
    Dim mp3 As JavaObject = LoadMp3File("D:\Documents\Music\222.mp3")
    Log(mp3.RunMethod("getBitrate", Null))
    Log(mp3.RunMethod("getSampleRate", Null))
    Log(mp3.RunMethod("getLengthInMilliseconds", Null))
End Sub

Private Sub LoadMp3File (Path As String) As JavaObject
    Dim jo As JavaObject
    jo.InitializeNewInstance("com.mpatric.mp3agic.Mp3File", Array(Path))
    Return jo
End Sub

GitHub - mpatric/mp3agic: A java library for reading mp3 files and reading / manipulating the ID3 tags (ID3v1 and ID3v2.2 through ID3v2.4).

A java library for reading mp3 files and reading / manipulating the ID3 tags (ID3v1 and ID3v2.2 through ID3v2.4). - mpatric/mp3agic

github.com

Jar: https://repo1.maven.org/maven2/com/mpatric/mp3agic/0.9.1/mp3agic-0.9.1.jar

 

[Peter Lewis]

#AdditionalJar: mp3agic-0.9.1
Sub Process_Globals
   
End Sub

Sub AppStart (Args() As String)
    Log("Hello world!!!")
    Dim mp3 As JavaObject = LoadMp3File("D:\Documents\Music\222.mp3")
    Log(mp3.RunMethod("getBitrate", Null))
    Log(mp3.RunMethod("getSampleRate", Null))
    Log(mp3.RunMethod("getLengthInMilliseconds", Null))
End Sub

Private Sub LoadMp3File (Path As String) As JavaObject
    Dim jo As JavaObject
    jo.InitializeNewInstance("com.mpatric.mp3agic.Mp3File", Array(Path))
    Return jo
End Sub

GitHub - mpatric/mp3agic: A java library for reading mp3 files and reading / manipulating the ID3 tags (ID3v1 and ID3v2.2 through ID3v2.4).

A java library for reading mp3 files and reading / manipulating the ID3 tags (ID3v1 and ID3v2.2 through ID3v2.4). - mpatric/mp3agic

github.com

Jar: https://repo1.maven.org/maven2/com/mpatric/mp3agic/0.9.1/mp3agic-0.9.1.jar

Thank you

 

[CR95]

By reading the detailed description of the library, I found that it was possible also to get the frames of the MP3 track

Getting ID3v2 frame values
Convenience methods are included to easily get common ID3v2 frames. If you wish to get frame data that does not have convenience methods, or if you wish to access meta-data on frames, direct reading of frames is possible (see further down on this page).

Mp3File mp3file = new Mp3File("SomeMp3File.mp3");
if (mp3file.hasId3v2Tag()) {
ID3v2 id3v2Tag = mp3file.getId3v2Tag();
System.out.println("Track: " + id3v2Tag.getTrack());

I tried something like that :

ID2 = mp3.RunMethod("hasId3v2Tag", Null)
If ID2 = True Then
    Dim ListMP3 As Object
    ListMP3 = "getTrack"
    CurTrackTitre = mp3.RunMethod("getId3v2Tag", ListMP3)
    Log ("TitreMP3= " & CurTrackTitre)
EndIf

But I get an error.
Please could you help to get the data from the tag

 

[DonManfred]

Dim ListMP3 As Object ListMP3 = "getTrack"

??

I guess you want to use JavaObject

 

[Peter Lewis]

??

I guess you want to use JavaObject

yes.

 

[CR95]

Final target is to get the parameters from the ID (name, year, album....)
In the sample joined to the library, the author gets them by getting :
- firstly, id3v2Tag = mp3file.getId3v2Tag();
- secondly, the parameter from this tag = id3v2Tag.getTrack());
I tried to reproduce that by calling Erel's subroutine with "getTrack" as parameter.
As I said, it was a try ! I do not know Java world