Results 1 to 2 of 2

Thread: NVENC in Windows service / Session 0 Isolation

  1. Default NVENC in Windows service / Session 0 Isolation

    Drivers for NVIDIA NVENC and NVIDIA Tesla GPU hardware are structured in a way such that the hardware acceleration capabilities are available to applications running in Session 0 Isolation.
    According to the documentation; NVENC should be available when running Wowza as a Windows service. (ref: How to enable hardware-accelerated transcoding when running as a Windows service)

    But when I start the Windows service, start a stream that has the Transcoder Add On enabled, the log tells me "NVidia hardware acceleration is NOT available". And when I start Wowza from the desktop, it works ("NVidia NVENC hardware acceleration is available; GPU[0]: name:"Quadro K4200" version:3.0 driver:6050 ... etc")

    How can I make NVENC available even when Wowza is running as a Windows service?

  2. #2



    Have you made sure you meet these requirements:
    Hardware and driver requirements

    Sorry I do not have much to add as far as help. It may be best for you to open a support ticket and work with the support team on this as there are plenty of variables to account for. You can open a ticket by emailing

    Kind regards,


Similar Threads

  1. NVENC not available on Windows g2.2xlarge EC2 instance
    By gavram in forum Wowza Media Server 3 for Amazon EC2 Discussion
    Replies: 5
    Last Post: 03-12-2014, 12:23 PM
  2. Windows: install wowza service
    By dardarlt in forum General Forum
    Replies: 2
    Last Post: 09-13-2012, 07:16 AM
  3. Windows 2008 R2 Service
    By haarvik in forum Server Administration Discussion
    Replies: 12
    Last Post: 05-08-2012, 01:13 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts