본 사이트는 여러분의 사용자 경험을 개선하기 위해 유지 보수를 진행하는 동안 기능이 제한됩니다. 도움말로 문제가 해결되지 않고 질문을 하고 싶다면 Twitter의 @FirefoxSupport 및 Reddit의 /r/firefox 채널을 활용하세요.

Avatar for Username

Mozilla 도움말 검색

고객 지원 사기를 피하세요. 저희는 여러분께 절대로 전화를 걸거나 문자를 보내거나 개인 정보를 공유하도록 요청하지 않습니다. "악용 사례 신고"옵션을 사용하여 의심스러운 활동을 신고해 주세요.

자세히 살펴보기

이 쓰레드는 보존되었습니다. 만약 도움이 필요하시면 새로운 질문을 올려주세요.

Youtube play button missing and progress bar doesn't show when video playing

  • 4 답장
  • 1 이 문제를 만남
  • 1 보기
  • 최종 답변자: cor-el

baums547
baums547
more options

When I watch a Youtube video the play/pause button that's normally in the bottom left corner is missing. When the video is playing my mouse disappears if it's over the video and the progress bar won't show. Youtube works fine on other browsers on this computer. My browser updated to version 92.0 today, so I'm not sure if that's what caused it. I'm using Windows 10 64 bit.

When I watch a Youtube video the play/pause button that's normally in the bottom left corner is missing. When the video is playing my mouse disappears if it's over the video and the progress bar won't show. Youtube works fine on other browsers on this computer. My browser updated to version 92.0 today, so I'm not sure if that's what caused it. I'm using Windows 10 64 bit.
첨부된 스크린샷

모든 댓글 (4)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Do you see media related messages in the Web Console ?

Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window
baums547
baums547 질문자
more options

This is what I see on the console screen (picture attached). I have Adblock Plus and a Youtube video downloader extension installed but disabling them doesn't fix the problem. Logging out of my Youtube account fixes the problem, but when I log back in the problem returns.

baums547
baums547 질문자
more options

I also get these (see picture). I just don't understand why videos play fine when I'm not logged in, but have problems when I am.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

This could be a problem with cache or cookies.

You can try these steps in case of issues with webpages:

You can reload webpage(s) and bypass the cache to refresh possibly outdated or corrupted files.

  • hold down the Shift key and left-click the Reload button
  • press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
  • press "Command + Shift + R" (Mac)

Clear the Cache and remove the Cookies for websites that cause problems via the "3-bar" Firefox menu button (Settings).

"Remove the Cookies" for websites that cause problems:

  • Settings -> Privacy & Security
    Cookies and Site Data: "Manage Data"

"Clear the Cache":

  • Settings -> Privacy & Security
    Cookies and Site Data -> Clear Data -> Cached Web Content: Clear

Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window