We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

MP4 videos won't play on firefox on ubuntu

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

more options

The videos work on microsoft edge, vlc, mplayer, mediaplayer ... but Firefox informs that they can't be played because they are broken. mp4 playback is activated and https://www.youtube.com/html5 informs that h 264 (which is the codec used on the videos) is supposedly available on my browser. Yet none of them work.

The videos work on microsoft edge, vlc, mplayer, mediaplayer ... but Firefox informs that they can't be played because they are broken. mp4 playback is activated and https://www.youtube.com/html5 informs that h 264 (which is the codec used on the videos) is supposedly available on my browser. Yet none of them work.

모든 댓글 (4)

more options

If you can fully support HTML5 player for video and audio then all check marks should be blue on https://www.youtube.com/html5

Firefox has not used Gstreamer for several releases now as FFmpeg and libavcodec is used. You need at least libavcodec 54.35.1 version or later as older versions are blocked starting Firefox 50.0 and later.

글쓴이 James 수정일시

more options

All marks are blue on https://www.youtube.com/html5

Libavcodec is 56.60.1

The files work on all the other browsers / players that I have tried

Firefox is unable to open any of them

more options

All marks are blue, Libavcodec is updated, still none of the mp4 videos work.

more options

What error messages do you see in the Web Console ("3-bar" menu button or Tools -> Web Developer)?

Does it help if you enable webm? about:config: media.*enable

Try the Firefox version from the official Mozilla server if you currently use a version from the repositories of your Linux distribution.