לאתר זה תהיה פונקציונליות מוגבלת בזמן שאנו מתחזקים אותו לשיפור החוויה שלך. אם מאמר מסויים לא פותר את הבעיה שלך וברצונך לשאול שאלה, קהילת התמיכה שלנו מחכה לעזור לך ב־Twitter תחת ‎@FirefoxSupport וב־Reddit תחת ‎/r/firefox.

Avatar for Username

חיפוש בתמיכה

יש להימנע מהונאות תמיכה. לעולם לא נבקש ממך להתקשר או לשלוח הודעת טקסט למספר טלפון או לשתף מידע אישי. נא לדווח על כל פעילות חשודה באמצעות באפשרות ״דיווח על שימוש לרעה״.

מידע נוסף

אשכול זה הועבר לארכיון. נא לשאול שאלה חדשה אם יש לך צורך בעזרה.

No H.264/mp4 video playback (FF57x64 Win10Home)

  • 4 תגובות
  • 8 have this problem
  • 2 views
  • תגובה אחרונה מאת kkkkzk

kkkkzk
kkkkzk
more options

I can't play videos on Facebook.

I am using Firefox 57.0.4 x64.

Firefox console says:

No decoders: video/mp4; codecs="avc1.4d401e", video/mp4; codecs="avc1.4d401e", video/mp4; codecs="avc1.4d401e", video/mp4; codecs="avc1.4d401f", video/mp4; codecs="avc1.4d401f", audio/mp4; codecs="mp4a.40.5", video/mp4; codecs="avc1.42E01E mp4a.40.2", video/mp4; codecs="avc1.4D401E mp4a.40.2", video/mp4; codecs="avc1.4D401F mp4a.40.2", video/mp4; codecs="avc1.640032 mp4a.40.2", video/mp4; codecs="avc1.640033 mp4a.40.2"

Youtube html5 test says no H.264 and no MSE & H.264.

I'm on Windows 10 Home WITHOUT any "N"-s, so that Windows Media Feature Pack would be missing.

I have tried all solutions presented to similar problems. None of them worked.

How can I make it work?

I can't play videos on Facebook. I am using Firefox 57.0.4 x64. Firefox console says: No decoders: video/mp4; codecs="avc1.4d401e", video/mp4; codecs="avc1.4d401e", video/mp4; codecs="avc1.4d401e", video/mp4; codecs="avc1.4d401f", video/mp4; codecs="avc1.4d401f", audio/mp4; codecs="mp4a.40.5", video/mp4; codecs="avc1.42E01E mp4a.40.2", video/mp4; codecs="avc1.4D401E mp4a.40.2", video/mp4; codecs="avc1.4D401F mp4a.40.2", video/mp4; codecs="avc1.640032 mp4a.40.2", video/mp4; codecs="avc1.640033 mp4a.40.2" Youtube html5 test says no H.264 and no MSE & H.264. I'm on Windows 10 Home WITHOUT any "N"-s, so that Windows Media Feature Pack would be missing. I have tried all solutions presented to similar problems. None of them worked. How can I make it work?

פתרון נבחר

None of these did work either. I have wasted so much time on troubleshooting this it turned out that formatting C: was a faster solution :(.

Anyway, thanks for your help!

Read this answer in context 👍 1

כל התגובות (4)

James
James
  • Top 25 Contributor
  • Moderator
more options

https://support.mozilla.org/en-US/kb/fix-video-audio-problems-firefox-windows

kkkkzk
kkkkzk Question owner
more options

Thanks for the answer.

Maybe I've constructed that sentence in a weird way, but what I meant was that it is a regular Windows version, with the Windows Media Features installed, so that solution you suggested won't do anything.

James
James
  • Top 25 Contributor
  • Moderator
more options

Some people have had issues with HTML5 player on Youtube and other sites due to extensions like Youtube Flash or force HTML5 player or such installed in Firefox.

Type about:config with a : in Location (address) bar and make sure none of the below Preferences are user set, if any are then double-click them to restore the default value of true

  • media.mediasource.enabled
  • media.mediasource.mp4.enabled
  • media.mp4.enabled
  • media.ogg.enabled
  • media.webm.enabled

After this try the https://www.youtube.com/html5 page again.

השתנתה ב־ על־ידי James

kkkkzk
kkkkzk Question owner
more options

פתרון נבחר

None of these did work either. I have wasted so much time on troubleshooting this it turned out that formatting C: was a faster solution :(.

Anyway, thanks for your help!