Fábio Rodrigues

David is right.
The problem is to have PHP 5.3 or higher with e-accelerator together, because they are incompatible with the “anonymous” function used by the module.
Simply disable the “e-accelerator” in server that the installation proceeds normally.

the problem of not loading the video was resolved by upgrading WordPress and Plugin. But checking with the provider, it does not access the function ffmpeg. Thanks.

I am testing the video is 24Mb. Regarding the language is Portuguese, but I do not think have problems with this because the plugin has worked previously.
In the “overview” is giving the following message:
Warning: exec () has been disabled for security Reasons in / home / correspondentesdp / www / wp-content / plugins / cool-video-gallery / lib / core.php on line 1370
this may be causing the problem?

OK,

first step:
select the video file, upload and send
https://www.diamixweb.com.br/images/image001.jpg

second step:
the video does not load and is wordpress loop, as if loading and never ends
https://www.diamixweb.com.br/images/image002.jpg

I await your response, thank you