MediaInfo.Open works on windows but not on Ubuntu

[modmanx]

Hello, I hope someone can help me out here :) I have pretty basic example, which works fine on Windows but not on Ubuntu 20.04. File does exist and I'm keep getting "No video streams in file" on Ubuntu without any error message. Is there a way how to figure out what's going on?

if (!System.IO.File.Exists(filename))
{
    return new { Error = "File does not exists" };
}

var mw1 = new MediaInfo.MediaInfo();
mw1.Option("ParseSpeed", "0");
mw1.Open(filename);            

var videostreamcount = mw1.CountGet(StreamKind.Video, 0);
if (videostreamcount > 0)
{
    var _height = mw1.Get(StreamKind.Video, 0, "Height");
    var _scanType = mw1.Get(StreamKind.Video, 0, "ScanType");
    var _isInterlaced = _scanType == "Interlaced";
    var _duration = mw1.Get(StreamKind.Video, 0, "Duration");
    return new { Height = _height, ScanType = _scanType, IsInterlaced = _isInterlaced, Duration = _duration };
}
else
{
    return new { Error = "No video streams in file" };
}

[yartat]

Have you installed additional libraries specified in README file?
I've just run tests on Ubuntu 20.4 LTS

Debug: MediaInfo library was loaded. Handle=140138212771056 Version is MediaInfoLib - v21.03

In case use internal MediaInfo class you should validate Handle property. If it has a zero value the libmediainfo.so was not loaded.

[modmanx]

Hello, thank you for replying. I installed mediainfo with apt and it was working with cli. I thought all libs are installed. I will try with manually installing all in readme and let you know :)

…

On Sat, 4 Sep 2021, 13:20 Yaroslav V Tatarenko, ***@***.***> wrote: Have you installed additional libraries specified in README file <https://github.com/yartat/MP-MediaInfo/blob/master/README.md#ubuntu>? I've just run tests on Ubuntu 20.4 LTS Debug: MediaInfo library was loaded. Handle=140138212771056 Version is MediaInfoLib - v21.03 — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#33 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAGTLP5JD4L4E5GQGZR6A4TUAH6H3ANCNFSM5DNBTPLQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[yartat]

Any news?

[modmanx]

Hello, thank you for asking, I'm still running production workload. I did install libs but couldn't get it to run. Probably I need to restart server to load everything from scratch and not from memory.

[910399614]

Hello, thank you for asking, I'm still running production workload. I did install libs but couldn't get it to run. Probably I need to restart server to load everything from scratch and not from memory.

Hello, I have the same problem as you. Did you find a solution？Thank you.

[squareballstudios]

This worked for me; needed to install libmediainfo0v5. Not part of the installation instructions. Got this from here: StefH/MediaInfo.DotNetWrapper#7

Uninstall official / downloaded versions

sudo apt remove --purge libmediainfo0v5 libzen0v5
sudo apt autoremove
sudo apt install libmediainfo-dev

[MichaelHochriegl]

I've got the same problem on Fedora 37.
My installed version of MediaInfoLib is v22.12 and the libs from the readme are the following versions:

Package zlib-1.2.12-5.fc37.x86_64 is already installed.
Package zlib-1.2.12-5.fc37.i686 is already installed.
Package curl-7.85.0-5.fc37.x86_64 is already installed.
Package libzen-0.4.40-1.fc37.x86_64 is already installed.
Package openssl-1:3.0.8-1.fc37.x86_64 is already installed.
Package libmms-0.6.4-18.fc37.x86_64 is already installed.

Any info on this? Or should I create a separate issue because I'm running on Fedora 37?

[drakiula]

This worked for me; needed to install libmediainfo0v5. Not part of the installation instructions. Got this from here: StefH/MediaInfo.DotNetWrapper#7

Uninstall official / downloaded versions

sudo apt remove --purge libmediainfo0v5 libzen0v5
sudo apt autoremove
sudo apt install libmediainfo-dev

This is working for me also, on Ubuntu 22.04.
It is still not 100% clear for me how DllImport is performing these lookups on Linux, not a .NET expert.
I was able to do some debugging with Jetbrains Rider,

NativeMethods.MediaInfo_New() 

was returning IntPtr.Zero at MediaInfo: 137.