Re: How to read artwork bitmaps embedded in MP3 files as "image"-Tag

[Benoît Minisini <benoit.minisini@xxxxxxxxxxxxxxxx>]

Le 09/03/2026 à 12:37, Claus Dietrich a écrit :
> Am 01.03.26 um 18:23 schrieb Claus Dietrich:
> > Am 01.03.26 um 17:59 schrieb Claus Dietrich:
> > > Hi
> > >
> > > I am writing a special type of audio file player. The ID3V2 metadata 
> > > (title/album/artist etc) are read as text inside a _Tag event 
> > > handling routine.
> > >
> > > In addidtion to this I also want to read artwork bitmaps embedded as 
> > > "image"-Tag. How can I do this?
> > >
> > > Best regards, Claus
> >
> > Sorry, I forgot to mention that I am using a MediaPipeline of gb.media 
> > and I want to avoid the installation of further cli tools.
> >
> > Brgds, Claus 
>
> No reply. So I am concluding that gb.media doesn't support it.
>
> I regard this functionality as essential for multimedia applications. 
> Gambas has a very powerful GStreamer implementation which provides all 
> we need - also the image tag. There is just no way to read it.
>
> Benoît: If you like to implement it, feel free to use the attached mini 
> app as a basis. It loads down a public domain music track with embedded 
> image (ignore the littered Comment-Tag).

I added in the last commit support for GStreamer "sample" objects, 
through a new 'MediaSample' class.

The image tag returns such an object, that includes the image contents 
(returned by the 'Data' property), and some metadata (returned by the 
'Info' property).

That metadata is returned as a collection of collections. The contents 
of these collections can be anything.

In the case of the mp3 I used for testing (not yours), I get that:

{"image/jpeg":{"width":400,"height":400,"sof-marker":2}}

It seems to mean that the image is a JPEG, so you have to use the 
'Image.FromString()' method to transform the sample data into an Image 
object.

Try it and tell me if you have any problem.

Regards,

--
Benoît Minisini.