I have a question. I downloaded and installed UltraVNC 1.0.8.X as server in one computer and as a viewer in the other, both computers in my LAN. When I open "Edit Settings" in the server computer and I go to the Screen Capture tab, under Advanced it shows two options, one is to "use system hookdll" and the other one is to "use mirror driver" which I have installed and it shows under Display Adapter in my Device Manager, right on top of my regular Nvidia video driver for my video card.
What's the difference in using system hookdll or the mirror driver?. What are the advantages and/or disadvantages?. What happens if I don't select either of them?.
I ask this because I did some tests, when I used the "mirror driver" and there was a webcam connected in the server computer, I couldn't see the image captured by the webcam in the viewer computer. I went back and changed it to use "system hookdll" and now I can see the image captured by the webcam, but the refresh rate is very slow, I have to click "refresh screen" in the viewer in order to see changes in the webcam captured image in the server. Is there a better way to do this?.
Thanks.
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Feedback is welcome
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A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38095
Feedback is always welcome
2025-12-05: Celebrating the 23th anniversary of the UltraVNC (26th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38130
2025-12-03: Could you please complete our poll/survey? Renaming UltraVNC files and service to be more clear: https://forum.uvnc.com/viewtopic.php?t=38128
There was a problem to vote, it is solved now! Thanks in advance!
2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
Any help is welcome to improve the UltraVNC page and/or to comment on the Wikipedia Talk page
2025-05-06: Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078
2023-09-21: Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864
Development: UltraVNC development is always here... Any help is welcome
Feedback is welcome
Join us on social networks and share our announcements:
- Website: https://uvnc.com/
- GitHub: https://github.com/ultravnc
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
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- Reddit community: https://www.reddit.com/r/ultravnc
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Difference between system hookdll and mirror driver?
-
Aguilabrava
- Posts: 2
- Joined: 2010-11-24 16:55
Re: Difference between system hookdll and mirror driver?
faq
[topic=15864][/topic]
i won't use mirror driver on vista/7 for this reason and eliminate border side issue with another driver limitation.
experienced just today.
i have very good result of video rendering.
win7 winvnc 1.0.9.3.3 MultiCPU with only system SCHook and ultravnc viewer 1.0.9.3.3 MP with best result with lossy quality video tight codec, very fast with full color and watching 640x480 video youtube via 2Mbit Internet
zrle is a lossless codec and slower if not optimized multi CPU/thread
but you need to wait build uvnc 1.0.9.4
(http://www.uvnc.eu/download/UltraVNC_1. ... _MP_update is not available)
[topic=15864][/topic]
i won't use mirror driver on vista/7 for this reason and eliminate border side issue with another driver limitation.
experienced just today.
i have very good result of video rendering.
win7 winvnc 1.0.9.3.3 MultiCPU with only system SCHook and ultravnc viewer 1.0.9.3.3 MP with best result with lossy quality video tight codec, very fast with full color and watching 640x480 video youtube via 2Mbit Internet
zrle is a lossless codec and slower if not optimized multi CPU/thread
but you need to wait build uvnc 1.0.9.4
(http://www.uvnc.eu/download/UltraVNC_1. ... _MP_update is not available)
UltraVNC 1.0.9.6.1 (built 20110518)
Windows OS: XP Home + Vista Business + 7 Home
Only experienced user, [u]not[/u] developer
Windows OS: XP Home + Vista Business + 7 Home
Only experienced user, [u]not[/u] developer