When I add libs it comes an error.

[Deleted user]

Adding libs.

[siordache]

You need to tell Gradle that your project depends on these libraries. Put this in your build.gradle:

repositories {
    mavenCentral()
    flatDir {
        dirs 'libs'
    }
}

dependencies {
    implementation name: 'bridj-0.6.3-20130316.190111-13'
    implementation name: 'slf4j-api-1.7.2'
    implementation name: 'webcam-capture-0.3.10-RC7'
}

[Deleted user]

@siordache Thank you!!!