Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Issues with Flash playback, in Firefox.

more options

Hi,

I have noticed some issues with Flash player in Firefox.

Videos playing in Flash player, flashes so that I see the background about once or twice a second unless I engage full screen.

When I engage fullscreen and later go back, selecting fullscreen a second time shows a full screen blackbox with only audio. The only way to resolve the issue is to reload the web page.

Sometimes going back from full screen makes the OS X stop light buttons in the upper left corner disapper.

Thank you!

Hi, I have noticed some issues with Flash player in Firefox. Videos playing in Flash player, flashes so that I see the background about once or twice a second unless I engage full screen. When I engage fullscreen and later go back, selecting fullscreen a second time shows a full screen blackbox with only audio. The only way to resolve the issue is to reload the web page. Sometimes going back from full screen makes the OS X stop light buttons in the upper left corner disapper. Thank you!

All Replies (2)

more options
more options

Thanks for the suggestion. Having tried this, it doesn't change this issue unfortunately. I beleive that it's specific to Firefox because I have not seen this in other browsers when using Flash, native HTML video players doesn't have this problem though as far as I have noticed so far.