Does AMD Ryzen 5 3400G can transcode 4K Hevc 265 10bit (50Mbps+) to 1080P(20Mbps)

Plex Media Server Desktops & Laptops
20

I think you have different questions?

  1. What hardware transcoding can the Ryzen CPU support?
  2. What hardware transcoding does a Synology NAS support? (You added a screenshot)

First:

  • There is no hardware transcoding support for AMD CPU or AMD GPU cards at this time.
  • Intel QSV (Quick Sync Video) and Nvidia cards only.

Second:

  • The Synology NAS model support is based on: Intel CPU without external GPU.
  • We are considering adding more information to the NAS Compatibility Guide.

While not clear what you’re asking:

If you add an Nvidia GPU card to your Ryzen system, with the Nvidia drivers, Plex will see the Nvidia and use it.