are you using jetpack? a common error caused in wp pages by jetpack unless you disable the shortcode module of jetpack… unfortunately, a lot of this in WP support forum since wp removed the oembed max size settings in the wp admin…

if not using jetpack, please elaborate..

not using jet pack..

as far as elaborating.. i am not sure what else to add.. 

the youtube links seem to self embed when a poster posts them.. they do not have to go through the add media button on the editor.. they simply put the url of the youtube video they want to show.. and it appears..

if there is any other information you might need .. let me know and ill do my best to provide that.. you can go to my forum.. 

its at www.rchelination.com/forum

i have a generic account your welcome to use..

user name is testuser

pw is testuser

the forum is pw protected until we are ready to go live with it.. and the pw to get on the site is   werock  

your welcome to head over.. in the main forum youll see a topic called RC heli videos  you will see examples of what i am talking about there

-Dan

The problem has started because the WordPress dev team have removed the option to set a max width in the WP settings > media admin panel that was available before and are now adding in a width value dynamically – something which I personally think is a mistake and ypu are not alone in being caught out by it. Am I also right in thinking you are using some sort of third-party plugin to render the videos? That might also be in need of an update f this is the case.

As a temp measure try adding to your Wp theme CSS this and see if it helps:

.player-container {
    max-width: 82%;
}

Might be enough…

Hanna Code Insert is another option for adding YouTube, PayPal Buttons, Etc. Copy / Paste your content then past the short code in your post. Especially useful if you want to add a video that is in an iframe where SP will not allow it. WordPress puts an add code button on it’s tiny mce editor making it easy to enter short codes easily.

Ok, I’m back and still haven’t been able to solve the problem. Unfortunately, the max-width code didn’t work, YS.

Here’s an example of my problem on my actual forum: http://www.rchelination.com/forum/rc-heli-videos/rchn-snow-day/

I am unable to find anything in the css stylesheet or any of the other theme files that will allow me to force the embedded video frame width to some value less than the 730px that my forum is set at.

I want my forum users to be able to simply copy and paste a YouTube or Vimeo link into the editor and get a video that doesn’t overflow the forum width. Ideally, it would look like this: http://demo.simple-press.com/forum/guest-demo-forum/test-youtube-embed/

I don’t want to have short code or HTML editting enabled for my forum users to access, so I need a solution that changes the global default. Thanks again for your help!

try this instead:

.spPostContent iframe {max-width: 730px;}

Mr Papa,

That looks like it worked! Thanks a ton!

Good news. Thanks for the update.

Mr Papa said
try this instead:

.spPostContent iframe {max-width: 730px;}

sorry i lost something… where do i have to put this code?

thanks in advance

In your WP theme stylesheet file. (styles.css)

Mr Papa said
try this instead:

.spPostContent iframe {max-width: 730px;}

I can not help in any proportional display format, the best we got was this:
. spPostContent iframe {max-width: 82%; max-height: 43%;}

http://redetcibrasil.net/forum/sala-de-aula-paltalk/marcello-bacci/

the display cell is not proportional.

sorry, Ygor, I do not follow your comment…  how is it related to this topic?

Change the CSS to this.

With no entry for height so it will auto adjust. Then check and see if needs any tweaks from there.

None of the css options worked. My videos are still extending wider than the forum width.