[Solved] Video File Looks Bad With Advanced Attachments

Hi Odira.

Please navigate to Dashboard => Forums => Settings => Styles

and put this css code into "Custom css Code".

#wpforo-wrap .wpfa-item.wpfa-video, 
#wpforo-wrap .wpfa-item.wpfa-video > video{
    width: 100%;
}

Have you updated wpForo to 1.3.0 and reset the Cache/CDN? This issue is already fixed with wpForo 1.3.0. Make sure you've updated, cleared and purged all caches and did Ctrl+F5 on front-end.

This is a conflict with your WP theme, if the issue is still not solved please put this CSS code in Forums > Settings > Styles > Custom CSS Code textarea. Save it, delete all caches and do Ctrl+F5 on front-end.

#wpforo-wrap .wpforo-post-content .wpf-video, #wpforo-wrap .wpforo-post-content .wpf-video iframe{max-width: 85%;}
@media screen and (max-width:1000px) {
    #wpforo-wrap .wpforo-post-content .wpf-video, #wpforo-wrap .wpforo-post-content .wpf-video iframe{max-width: 98%;}
}

If this is an uploaded video HTML5 player, put this CSS code as well:

#wpforo-wrap .wpforo-post-content .wpfa-video, #wpforo-wrap .wpforo-post-content .wpfa-video video{max-width: 85%;}
@media screen and (max-width:1000px) {
    #wpforo-wrap .wpforo-post-content .wpfa-video, #wpforo-wrap .wpforo-post-content .wpfa-video video{max-width: 98%;}
}

It is normal now. Thank you.

It is seems the first code actually solved the problem but due to browser cache, I was still seeing the first version. I cleared browser cache and it looks good now.