do ypu have youtube flash video player addon installed ?

FFus3r said

do ypu have youtube flash video player addon installed ?

nope , i have the classic shockwave flash player ( disabled , i active the flash only on the sites that still use it , sadly only few ) , and as i said 2/3 days ago not had this problem , and on my pc nothing changed from those days , hope is possible to fix it , thanks for reply

Try disabling graphics hardware acceleration in Firefox. Since this feature was added to Firefox it has gradually improved but there are still a few glitches.

You will need to restart Firefox for this to take effect so save all work first (e.g., mail you are composing, online documents you're editing, etc.,) and then perform these steps:

In Firefox 54 and below:

1. Click the menu button and select Options (Windows) or Preferences (Mac, Linux).
2. Select the Advanced panel and the General tab.
3. Uncheck Use hardware acceleration when available.
4. Close Firefox completely and then restart Firefox to see if the problem persists.

In Firefox 55 and above:

1. Click the menu button and select Options (Windows) or Preferences (Mac, Linux).
2. Select the General panel.
3. Under Performance, uncheck Use recommended performance settings. Additional settings will be displayed.

   

4. Uncheck Use hardware acceleration when available.
5. Close Firefox completely and then restart Firefox to see if the problem persists.

Did this fix your problems? Please report back to us!

If the problem is resolved, you should check for updates for your graphics driver by following the steps mentioned in these Knowledge base articles:

• Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

• Upgrade your graphics drivers to use hardware acceleration and WebGL

Thank you.

FFus3r said

Try disabling graphics hardware acceleration in Firefox. Since this feature was added to Firefox it has gradually improved but there are still a few glitches. You will need to restart Firefox for this to take effect so save all work first (e.g., mail you are composing, online documents you're editing, etc.,) and then perform these steps: In Firefox 54 and below:

1. Click the menu button and select Options (Windows) or Preferences (Mac, Linux).
2. Select the Advanced panel and the General tab.
3. Uncheck Use hardware acceleration when available.
4. Close Firefox completely and then restart Firefox to see if the problem persists.

In Firefox 55 and above:

1. Click the menu button and select Options (Windows) or Preferences (Mac, Linux).
2. Select the General panel.
3. Under Performance, uncheck Use recommended performance settings. Additional settings will be displayed.

   

4. Uncheck Use hardware acceleration when available.
5. Close Firefox completely and then restart Firefox to see if the problem persists.

Did this fix your problems? Please report back to us! If the problem is resolved, you should check for updates for your graphics driver by following the steps mentioned in these Knowledge base articles:

• Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

• Upgrade your graphics drivers to use hardware acceleration and WebGL

Thank you.

sadly still not work and i'm sure is not because of drivers outdated because i could see the same videos some days ago , also a strange thing if i copy paste a video link it does not load but if i click on the videos listed on youtube , some work but if for example i refresh the page on that video that load , the error come back , any clue on how fix this ? thank you

here a screenshot as a proof https://i.imgur.com/wE9UDjf.jpg the same video if refresh , not longer load , seems like a bug , but i don't know how fix it , basically with this bug all embed videos can't be played too

if you have any flash or youtube addons, try to remove them.

or try to clear both cookies and the cache. Note: This will temporarily log you out of all sites you're logged in to. To clear cache and cookies do the following:

1. (Firefox 57 and above) Click the Library button and choose History.
   (Click the menu button and choose History in older Firefox versions.)
2. In the History menu, choose "Clear Recent History...".
3. Under "Time range to clear", select "Everything".
4. Now, click the arrow next to Details to toggle the Details list active.
5. From the details list, check Cache and Cookies and uncheck everything else.
6. Now click the "Clear Now" button.

Further information can be found in the Delete browsing, search and download history on Firefox article.

Did this fix your problems? Please report back to us!

Thank you.

i have only the classic shockwave flash and i need it for the few sites that use it , deleting cache and cookies didn't help too sadly...

try to update or install the latest adobe flash player and restart firefox.

FFus3r said

try to update or install the latest adobe flash player and restart firefox.

i have already the latest flash ( 31.0.0.108 ) also youtube no longer use flash for videos , and i posted a screenshot that prove is porobably a bug https://i.imgur.com/wE9UDjf.jpg , but don't know how happened and how solve it...thank you for trying to help me

What boxes are blue/red on the following page, normally only the last one is red:

https://www.youtube.com/html5

Also: Fix video and audio problems on Firefox for Windows N editions

The last version of Firefox for Windows Vista is Firefox 52.9.0esr. Why are you STILL running Firefox 43? I don't think your explanation of not liking it from this thread holds up because there are lots of ways to modify Firefox so you can like it better:

https://support.mozilla.org/questions/1224508

can you check this test page?

• https://www.youtube.com/html5

usually would show 5 blue boxes

HTMLVideoElement ----------blue

   H.264 ---------------------------red
   WebM VP8 ---------------------blue

   Media Source Extensions-- blue
   MSE & H.264 ----------------red
   MSE & WebM VP9 -----------red

for now just prefer use this version , i'm sure this problem can be solved for this version , since old videos could be watched fine 2 days ago

try this addon:

• https://addons.mozilla.org/en-US/firefox/addon/html5-video-everywhere/?src=recommended

or see this page:

• https://support.mozilla.org/en-US/kb/html5-audio-and-video-firefox

FFus3r said

try this addon:

• https://addons.mozilla.org/en-US/firefox/addon/html5-video-everywhere/?src=recommended

or see this page:

• https://support.mozilla.org/en-US/kb/html5-audio-and-video-firefox

sadly on firefox 43 this addon can't be installed , can you tell me if the codecs pack listed here https://www.codecguide.com/download_k-lite_codec_pack_mega.htm can be used by firefox for load all videos ? thank you

i tried a firefox refresh too but didn't solved the issue

why are you using version 43 ? update to the latest vsersion.

any way if you don't want to update it, try to install the latest Media Feature Pack. and restart your computer.

See also:

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

• https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues
• https://support.mozilla.org/en-US/kb/html5-audio-and-video-firefox

FFus3r said

why are you using version 43 ? update to the latest vsersion.

---

any way if you don't want to update it, try to install the latest Media Feature Pack. and restart your computer.

were to find this media feature pack ? can be installed on vista sp 1 ? did the other codecs ( https://www.codecguide.com/download_k-lite_codec_pack_mega.htm ) help firefox to load videos ?

cor-el said

See also:

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

---

• https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues
• https://support.mozilla.org/en-US/kb/html5-audio-and-video-firefox

i've see those pages but didn't help , also old videos always load fine with no codecs at all , but now no more whitout that workaround , so there should be a way for solve this

run windows update OR install it from here:

• https://support.microsoft.com/en-us/help/2117917/platform-update-supplement-for-windows-vista-and-for-windows-server-20

FFus3r said

run windows update OR install it from here:

• https://support.microsoft.com/en-us/help/2117917/platform-update-supplement-for-windows-vista-and-for-windows-server-20

the codecs from microsoft need the service pack 2 that i cannot install , can the other codecs i posted before maked firefox load videos ?

also older videos loaded fine days ago with no codecs so there should be a fix for this , here a proof with the workaround i described https://i.imgur.com/wE9UDjf.jpg , need to know a way for be able to watch again older videos like before , since for older videos codecs aren't needed , thanks

• http://www. windowsvistacodecs .com/

edit: use above at your own risk!