What to do if a voice command is not recognized
If your spoken phrase is not captured correctly, follow the on-screen prompts to try again. Make sure you are speaking naturally – there is no need to speak any slower or louder than you do in a normal conversation. Also try not to overpronounce syllables or words. A clear and direct command works best.
With push-to-talk voice, try holding your handheld remote 2 to 3 inches from your mouth.
If voice searches are not working to your satisfaction, remember that you can also use Roku Search with the on-screen keyboard.