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Thread: Scan Converter using a lot of CPU resources

  1. #1
    Registered User
    Join Date
    Jul 2018
    Location
    Wisconsin
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    Scan Converter using a lot of CPU resources

    I am getting about 22-30% CPU usage from Scan Converter on my PC. What can I do to drop the resource requirement? It also has the same level even if I use region capture. I thought this was supposed to only use ~6%.

    PC stats:

    i7-7700K @ 4.2ghz
    GTX 1070
    3 - 1080p monitors
    1 - 1080p webcam
    1GbE NIC

    I'm capturing at 60fps. Also, is there some way to make it only capture from one monitor? ROI doesn't capture the whole screen.

    Note: On one of my older computers, which has an i5-2400, it uses 30-40% CPU.
    Last edited by 4xStreamer; 03-30-2020 at 10:29 PM.

  2. #2
    Registered User
    Join Date
    Oct 2018
    Location
    Houston Texas
    Posts
    21
    Quote Originally Posted by 4xStreamer View Post
    I am getting about 22-30% CPU usage from Scan Converter on my PC. What can I do to drop the resource requirement? It also has the same level even if I use region capture. I thought this was supposed to only use ~6%.

    PC stats:

    i7-7700K @ 4.2ghz
    GTX 1070
    3 - 1080p monitors
    1 - 1080p webcam
    1GbE NIC

    I'm capturing at 60fps. Also, is there some way to make it only capture from one monitor? ROI doesn't capture the whole screen.

    Note: On one of my older computers, which has an i5-2400, it uses 30-40% CPU.
    Have you updated to the most recent version of NDI? 4.5 was just released and should alleviate some of those issues.

  3. #3
    Versions of NDI Scan Converter 3.5 and later all use the GPGPU processing which have low CPU usage. I'm looking at a system right now sending [email protected] from a system and the CPU is from 1.7% up to 2.3%.

    Is 'Use Monitor Refresh' rate selected in NDI Scan Converter? And if so, are you running displays at a high refresh rate (greater then like 120/144Hz)? My understanding is that more CPU will be used in that case.
    Kane Peterson
    Solutions Architect
    NewTek, Inc.

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