Valve has officially introduced the Pyrowave video codec as an experimental feature within the latest Steam Beta client. This addition aims to improve the visual quality and latency of Steam Remote Play sessions, specifically targeting users who prioritize color accuracy and text clarity during desktop streaming. By supporting YUV 4:4:4 and HDR color formats, the codec provides a significant upgrade for those streaming high-fidelity content from a host machine to a client device.

Technical Requirements and Performance

The implementation of Pyrowave comes with specific hardware and network demands. Because the codec is designed for high-quality output, it requires significantly more bandwidth than standard streaming options. Users should be prepared for bandwidth usage that is 5 to 10 times higher than traditional codecs, making a robust Gigabit ethernet connection essential for a stable experience. Valve has explicitly stated that this codec is intended for flat streaming only and is not currently supported for Steam Link VR applications.

For Linux users, accessing this feature requires specific configuration. You must enable the experimental SteamRT3 Steam Client to gain access to the codec settings. Once enabled, the client provides granular control over the streaming experience, allowing users to manually adjust bitrates between 100 Mbit/s and 500 Mbit/s to match their local network infrastructure.

Key Specifications and Constraints

  • Codec Type: Experimental Pyrowave video codec.
  • Color Support: Full YUV 4:4:4 and HDR color formats.
  • Bitrate Control: Manual settings ranging from 100 Mbit/s to 500 Mbit/s.
  • Bandwidth Demand: 5-10 times higher than existing codecs.
  • Platform Compatibility: Windows, macOS, and Linux (requires SteamRT3).
  • Usage Restriction: Flat streaming only; not for Steam Link VR.

While the codec offers superior visual fidelity, the high bandwidth requirement means it is not suitable for all network environments. Users with limited network capacity may find the manual bitrate controls useful for balancing quality against stability. As an experimental feature, Valve continues to monitor performance data to refine the codec before a potential wider release.

Official evidence

  • Official announcement
  • Official announcement
  • Official announcement