Rtsp Video Streaming with Authentication

I'm tring to connect to straming ip cameras, with ip address. I tried to connect with:

rtsp://username:password@ip_camera

but the video view don't like it. I've tried with map like:

Uri source = Uri.parse("rtsp://ipcamera");
headers = new HashMap<String, String>();
headers.put("Username", "user");
headers.put("Password", "password");
videoView.setVideoURI(source, headers);

don't works anyway. So I readed on the internet that it want the base_64 basic auth so:

String authHeader = "Basic " + Base64.encodeToString("username:password".getBytes(),Base64.URL_SAFE | Base64.NO_WRAP);
headers.put("Authorization", authHeader);
Uri source = Uri.parse("rtsp://ipcamera");
videoView.setVideoURI(source, headers);

nothing. Same error

E/MediaPlayerNative: error (1, -2147483648)

that it means unknow error (?)

Any advice to find a working method? Thanks

EDIT

I found, with chrome network analyze, that this camera use a Digest Authorization. That is a way to generate it?