Learning opencv on the second example, look at the tip, don't quite understand, is like ffmpeg version problem, but checked no problem, also checked the cmakedownload. Log, also no shortage of documents, which great god help children

CodePudding user response:

Video IO version is wrong???

CodePudding user response:

To opencv rise before class?
Upgrade from 4.1 to 4.2 when a plugin you don't have a compiler or because the network problems didn't download success
Will cause you to use now or version 4.1
Recompile 4.2 or from the Internet to find the corresponding DLL file cover

CodePudding user response:

Have a few questions,
Why use a for loop;
(2) why the if judgment;
You went to the two to see if there is no problem,

CodePudding user response:

Opencv

OpenCV related knowledge and practical experience,

CodePudding user response:

Emmm, try to remove the autosize try and have a look