CODEWITHSUNDEEP
c#.netvlclibvlconvif
Ali Kherad
Ali Kherad

Reputation: 965

Why LoadLibrary() fail's on libvlc.dll when I changed the target framework in C#

I encountered an strange problem in c#...
I was trying to connect to an ONVIF camera through VLC library(tell me if there's a better way)
And I found a nice pre-implemented library called nVLC on the NuGet, then I used it, and it was very good,
But when I changed the target framework in c# I realized that nVLC's target framework is different from the one I selected,
And when I changed the target framework back to 4.0(As nVLC's) I've got a strange LibVlcInitException exception,
Then I downloaded the nVLC source code and debug database as well to find out what is wrong in the nVLC
Finally I found that the exception is not in the nVLC's code but somewhere in C# internal library loading mechanism that handles extern methods.
I even tried to load the libvlc.dll using kernel method LoadLibrary() in my project but this one failed like before...

m_hMediaLib = LibVlcMethods.libvlc_new(args.Length, args); //nVLC internal line that error occures.
//and:
IMediaPlayerFactory _factory = new MediaPlayerFactory(); //in my code.

I prefer to use VLC to connect to my ONVIF camera(my camera give me a H264 format).

finally:

  1. I want to know what's the problem with LoadLibrary().
  2. I want to know if there's a better library to connect to an ONVIF camera with less code(JUST H264).

Thank you...

Upvotes: 0

Views: 1276

Answers (1)

Ali Kherad
Ali Kherad

Reputation: 965

I found the answer after a hard working week!!
This is because of nVLC's way to find the VLC installation path...

If you have installed a x64 VLC this will add a key named "SOFTWARE\VideoLAN\VLC" into the registery for sure.
Then in the nVLC it check for process(Environment.Is64BitProcess) if it is x64 get the VLC installation path from "SOFTWARE\VideoLAN\VLC" (the one I missing because I installed x86 version of VLC) but if process is x86 it search in "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" for VLC.

Hope help you...

Upvotes: 1

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