Hi and thank you for your participation.
No, there are no black frame in the start of the video. I have edited a new version whith an absolutely clean cut in the start. Between the white .jpg and the video black frames showing up.
Ok then please add the same video in any page and share me the page URL so that we can check it.
Also see the solutions posted in the following topics.
I have problem with installation af a Revolution slider filmstrip plugin “codecanyon-2751380-slider-revolution-responsive-wordpress-plugin (1)”.
I have updated the slider to the latest version but the plugin is rejected.
Earlier this plugin was installed on a “testsite” but this is now deleated.
The theme only comes with Revolution slider plugin and not any other add ons or plugins of it so we don’t provide support to them here. Please see https://themeforest.net/item/jevelin-multipurpose-premium-responsive-wordpress-theme/14728833/support