The developers of Smart YouTube TV (and its successor, SmartTube) frequently release patches. Check the official GitHub repository for updates.
If Error 391 occurs during playback, the hardware may be struggling with the selected codec. Navigate to > Video Player . smart youtube tv 617 391 better
Ensure your DNS isn't blocking YouTube's video delivery domains. The developers of Smart YouTube TV (and its
Enable "Beta" updates in settings if the stable version is lagging. 2. Clear Cache and Data Overloaded cache files can cause the 617 timeout error. Go to your device . Select Apps > Smart YouTube TV . Click Clear Cache and Clear Data . Restart the app and log back in. 3. Adjust Video Presets Navigate to > Video Player
What are you using (Firestick, Nvidia Shield, Sony TV)?
Often indicates a playback issue caused by outdated app versions or codec incompatibilities. How to Fix Errors and Make Performance Better 1. Update to the Latest Stable Version
Sometimes a clean install is the fastest way to wipe out persistent 391 errors. If you'd like to troubleshoot further, let me know: