Can't log in yt music

[down2hell]

I'm using the gui. When I click login it says "file not detected, login required" and it does open ytmusicapi.exe, but it doesn't provide a URL like the readme says, instead it just shows "Enter your Google Youtube Data API client ID". I might just be stupid, but I can't figure out what to do here.

[Kav47]

Looks like Youtube Music made some changes and you'll need a Google Cloud Project to get things working with Oauth. You can read about it here. Your best bet is to use browser auth.
I followed this: #125 (comment)

1. Open a new tab with web developer tools and go to YT Music
2. Open the "Network" tab and filter for "browse?" If it doesn't show up, refresh the page (Ctrl + Shift + R / CMD + Shift + R), and scroll down or play any song.
3. Git clone the repo with git clone https://github.com/linsomniac/spotify_to_ytmusic and cd spotify_to_ytmusic
4. Install the required dependencies pip install ytmusicapi and pip install tk
5. For Windows/ Linux: run the command ytmusicapi browser and paste whatever you copied.
6. For Mac: run the command pbpaste | ytmusicapi browser
7. edit the backend.py file: open the spotify2ytmusic/backend.py file in your preferred text editor or nano spotify2ytmusic/backend.py
8. Just above line 22, if not os.path.exists("oauth.json"): add the following line return YTMusic("browser.json"). Save the file. The "def get_ytmusic() -> YTMusic:" block should look like the following:

def get_ytmusic() -> YTMusic:
    """
    @@@
    """
    return YTMusic("browser.json")
    if not os.path.exists("oauth.json"):
        print("ERROR: No file 'oauth.json' exists in the current directory.")
        print("       Have you logged in to YTMusic?  Run 'ytmusicapi oauth' to login")
        sys.exit(1)

    try:
        return YTMusic("oauth.json")
    except json.decoder.JSONDecodeError as e:
        print(f"ERROR: JSON Decode error while trying start YTMusic: {e}")
        print("       This typically means a problem with a 'oauth.json' file.")
        print("       Have you logged in to YTMusic?  Run 'ytmusicapi oauth' to login")
        sys.exit(1)

9. Run python3 -m spotify2ytmusic list_playlists to check whether the tool is working. It should display your YouTube Music playlists.
10. Run python3 -m spotify2ytmusic gui
11. Now you can "Load liked songs" and "Copy all playlists" from the tabs.

Update:

• If you are importing a large number of songs, you might get a '401: Unauthorized' error after some time. You'll need to update your browser authentication (refer to steps 2 and 5/6). Once the browser.json is updated, run step 10 again.
• I also had some problems with my huge library. To fix it, I had to delete songs that were updated in that 'playlists.json' file. Whenever I got that '401 Unauthorized' error, I searched the song in the JSON file. Then, I deleted all the songs block listed below it and try loading everything again.

Ref:
https://ytmusicapi.readthedocs.io/en/stable/setup/browser.html
sigma67/ytmusicapi#679
sigma67/ytmusicapi#682
Thanks to @ohadklein11