Error opening of qtmeld1.lib

[piyushjain0909]

Hi,

I tried asking in different forums about my problem but didnt got satisfactory reply. I hope you can help me out.

I want to record a video using webcam in Qt on windows 10, I added qtmeld1.lib along with its path in the .pro file but when I build my project it gives me an error - LNK1104: cannot open file 'qtmeld1.lib'.

Can you please guide me on how can I use the library?

Thank you for your time and knowledge.

[kibsoft]

Hello Were you able to manage it? If not, did you build QtMEL youself or downloaded binaries from my website? What Qt version and MSVC do you use?

[piyushjain0909]

Hello,

Its still not working. I downloaded ready to use build from your website. I am using Qt Creator 4.2.1 based on Qt 5.8.0 (MSVC 2013 64 bit).

Thank you for your time and knowledge.

[kibsoft]

Unfortunately, you have to build it yourself, because my "ready to use" builds are too old. And I used MinGW instead of MSVC to build it, that is the problem.

[piyushjain0909]

Alright, I will try with MinGW and check.

Thanks for the reply.

[kibsoft]

The problem that in this case you have to use old MinGW and possibly old Qt. So, It would be better to build it from scratch somehow.

[piyushjain0909]

By old you mean how much old? Do you have any recommended version of Qt and MinGW?

[kibsoft]

Here is the build for Qt 5.0 and MinGW 4.8 https://www.dropbox.com/s/60e2pf13z0ncmix/QtMEL_Qt5_MinGW48.zip?dl=0 Here is the build for Qt 5.0 and MSVC2010 https://www.dropbox.com/s/2kwnvl2pa96pr5y/QtMEL_Qt5_MSVC2010.zip?dl=0

These are the "newest" builds I have. Unfortunately I've freezed development in 2013.

[piyushjain0909]

Thanks for the links. I will try and let you know if it works fine for me or still I am facing a problem.

[piyushjain0909]

Hi again,

I tried with Qt 5.0 and MinGW4.7 but this time I ran into another error of "exited with code -1073741511" . I have opencv and ffmpeg installed and linked with Qt.

I have mentioned include path in .pro file and listed the library. I copied all the dll files into debug folder but still not able to run the program.

Can you please guide me on this.

Thank you for your time and knowledge.

[kibsoft]

I wrote MinGW 4,8, this can be a reason. Do you run the app from Qt Creator? Try to launch these examples on your PC - https://dl.dropboxusercontent.com/u/77719957/QtMEL_Examples.zip If they work then the problem may be in missing dependencies.

[piyushjain0909]

Sorry, there was a type error. Is it MinGW 4.8 . The examples link contains no files.

Can you please give the link again.

[piyushjain0909]

Yes, I am running through Qt creator

[kibsoft]

Sorry, here is the actual link: https://www.dropbox.com/s/nzmh0iyr1hymfki/QtMEL_Examples.zip?dl=0

[piyushjain0909]

The examples works fine. How can I run it through Qt Creator?

[kibsoft]

Nohow. Just compare dlls from examples and yours dlls, maybe you missed something.