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.

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

youtube videos does not play in HD quality

more options

Using windows 10 with latest firefox version 45.0.1(64 bit) don't use any add-ons, but only flash player latest version plug in, youtube videos don't play in HD quality(sometimes it plays if the video is lucky) and after playing video mouse cursor does not not disappear automatically in full screen mode having this issue from long time, that's why i have to use other browser for playing youtube videos please fix this issue i love MOZILLA and FIREFOX THANKS IN ADVANCE! solutions tried 1. clearing browser cache and temporary files.

                          2. refreshing firefox.
Using windows 10 with latest firefox version 45.0.1(64 bit) don't use any add-ons, but only flash player latest version plug in, youtube videos don't play in HD quality(sometimes it plays if the video is lucky) and after playing video mouse cursor does not not disappear automatically in full screen mode having this issue from long time, that's why i have to use other browser for playing youtube videos please fix this issue i love MOZILLA and FIREFOX THANKS IN ADVANCE! solutions tried 1. clearing browser cache and temporary files. 2. refreshing firefox.

פתרון נבחר

After checking youtube html5 page MSE& webm vp9 is disabled, then i checked if there is driver update available for display driver(not available) then i disabled hardware acceleration and restarted the browser and now Youtube videos started playing in HD quality and youtube html page is showing MSE& webm vp9 is enabled. Thanks for help!

Read this answer in context 👍 4

כל התגובות (2)

more options

YouTube uses the HTML5 media player and not the Flash plugin in current Firefox versions.

You can check that via the right-click context menu in the player area. The Flash player always shows the Flash version that is used. You can open the YouTube test page via "About the HTML5 player".

Are all features available and enabled?


You can try to disable hardware acceleration in Firefox.

  • Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"

You need to close and restart Firefox after toggling this setting.

You can check if there is an update for your graphics display driver and check for hardware acceleration related issues.

more options

פתרון נבחר

After checking youtube html5 page MSE& webm vp9 is disabled, then i checked if there is driver update available for display driver(not available) then i disabled hardware acceleration and restarted the browser and now Youtube videos started playing in HD quality and youtube html page is showing MSE& webm vp9 is enabled. Thanks for help!