Multiple issue with VLC on Debian

Question

So I have a Raspberry(actually virtualBox) with Debian, VLC installed, and a python script that i want to run.

• Issue #1: I try to run a video with python-vlc on my python script on a Tkinter frame

The script is correct since it does run on my window pc, the code looks something like this:

instance = vlc.Instance()
player = instance.media_player_new()

def GetHandle():
    return frame.winfo_id()

def play(_source):
    Media = self.instance.media_new(_source)
    Media.get_mrl()
    player.set_media(Media)

    player.set_hwnd(GetHandle())
    player.play()

but I get this error that keeps looping

[a4c05f88] main video output error: video output creation failed
[9752e2f0] main decoder error: failed to create video output
[h264 @ 0x9752e9e0] get_buffer() failed
[h264 @ 0x9752e9e0] thread_get_buffer() failed
[h264 @ 0x9752e9e0] decode_slice_header error
[h264 @ 0x9752e9e0] no frame!

I looked up how I could fix this. What I found was that I had to set the video output to OpenGL or something like that. So I tried to set it in the settings of VLC but

• Issue #2: I don't see any text

I can't find anything about VLC not showing any text. I tried reinstalling it after removing it and rebooting. Before I also had an another issue with PulseAudio that i was able to fix, so basically nothing really worked/works. Anyone could help with this?

Is there a way to change VLC's settings by terminal without needing to open VLC?

Update: So I found out that changing the font type/size does make the text pop up for 2/3 seconds before disappearing again, so like that i tried setting the video output to all the one available(if it actually did, couldn't really read) and still didn't work