Live NetTV v5.0Widevine L1 vs L3: what it means
| Level | What it is | Typical result in streaming apps |
|---|---|---|
| L1 | Decryption and video processing in the device's secure hardware | HD and 4K, where the service and the rest of the chain allow it |
| L3 | Software-only decryption | Usually limited to standard definition |
Cheap uncertified Android TV boxes often ship with L3 only, which is why Netflix or Prime Video look blurry on them even with fast internet. Google-certified devices such as Google TV Streamers, and Amazon Fire TV devices, are built for HD and 4K playback.
What else limits HD and 4K
- HDCP 2.2 on the TV's HDMI port and every cable or switch in between, for 4K.
- Your plan: many services charge more for HD or 4K.
- Internet speed: about 15–25 Mbps for 4K; check it with our speed test.
- Device certification: some apps, such as BBC iPlayer, only run on certified devices; see BBC iPlayer on Android TV boxes.
Choosing a device? Use our Fire TV model finder and the Google TV Streamer guide.
Frequently asked questions
How do I check Widevine level on an Android TV box?
Open this page in the box's browser and press Check. For the native app view, a DRM info app from the Play Store shows the system's Widevine level directly.
Why is Netflix blurry on my Android TV box?
Usually because the box only has Widevine L3 or is not certified by Netflix, so it is limited to SD.
Can I upgrade a box from L3 to L1?
No. L1 depends on secure hardware and keys installed by the manufacturer; it cannot be added with an app.
Is any data sent when I run the check?
No. The check runs in your browser using the standard media key APIs, and nothing is sent to us.