Firefox Support Forum

This may sound like word games, but I'm not trying to be funny, merely specific.

So I'm on a network with limited bandwidth. Therefore it's critical for me to understand what settings I can configure (if any) that will prevent the DOWNLOAD of video and/or large images from web sites.

For example, your basic site nowadays probably uses HTML5 and may use that vs. the old-style Flash plug-ins to embed video. And yep classic HTML links with references to image files for the images.

Back in the day you could configure a browser to ignore these references and then the browser would not even attempt to fetch the referenced image or video files. I've recently started using Firefox again, and I'm trying to learn how Firefox handles this in the HTML5 era (or rather what dumb users like me are supposed to do nowadays).

I'm noticing most of the help literature is regarding disabling settings of the auto-PLAY feature. However, due to my ignorance of modern Firefox, perhaps I'm reading it wrong, but most of it seems to involve disabling plug-ins that activate after the file is downloaded, not preventing the actual download. Similar to if I'm using Microsoft Word to view a DOCX file from a web site, uninstalling Word doesn't prevent the DOCX file from downloading. What I don't want to do is cheerfully disable the video playing while my browser still happily downloads the video in the background... because my main goal is not to avoid the annoyance of autoplay, but my goal is to conserve bandwidth on my connection.

FYI I'm using the latest version of Firefox Quantum on Manjaro Linux.

Thanks for advice anyone can provide in helping bring me into the "now" of modern Firefox, or who can point me to any further help articles or instructions to help educate me about this. If I'm over-reading and disabling auto-PLAY also inherently disables the downloading of the associated media, super, but that distinction is not obvious in any of the documentation I've seen so far.

Thanks!!

So thanks to your update today I can no longer watch videos via prime or netflix due to a Widevine.Cdm error.

That's fantastic, especially as Microsoft are moving to Chromium, you're really selling your service.

See I'm being totally nice. And not calling you names.

Last night around 8pm I watched a Youtube video without a problem, closed my browser and did other things for awhile. When I got back on at about 10pm and tried to watch another video the video suddenly stopped a few seconds, gave me "An error has occurred" then suddenly the video started again at the point it stopped but now there was a little bracket at the stopping/restart point (see image attachment). This wouldn't be a problem if it happened once in awhile but since last night it happens with EVERY video regardless of length or quality. In fact, sometimes it forces me to watch it on the highest quality and makes the other options unavailable. If I try to refresh it takes a LONG or simply refreshes forever. And heaven forbid I should have any other windows or tabs open when this happens because they'll suddenly stop loading or get REALLY laggy. I have no choice but to watch Youtube in IE which works surprisingly well and doesn't do any of the crap I've just described.

Everything is up-to-date. I have cleared cashe, temp files, cookies and history. I have not downloaded or installed anything in the last 24 hours. I've asked other people who use FF about this and they all say it's fine so I don't know what to do anymore.

When I've been playing YouTube videos lately, I've noticed that a bunch of black boxes have been appearing over the player interface (The controls below the video) while the video is playing. Unfortunately, I can't provide a good screenshot, as the boxes come and go too quickly for me to get them. This issue still occurs if I restart Firefox in safe mode. I think it started happening with Firefox 37.

I have a MacBook Pro (Retina, 13-inch, Early 2015) with firefox as my browser. I"m having a problem with playing videos and have tried to use firefox help lists to no avail. If I force quit the browser and then reload it I can play about 5-6 videos but after that it just buffers and tells me to restart my computer. I have removed adobe flash player and reinstalled it. I have removed the ad blocker I had on the computer and didn't re-install it. I have tried other things that are on the internet, nothing works. Any suggestions... please

First attempt to play a video plays instantly, but clicking any video I've viewed since a cache clear or if I refresh the page, the videos load shifted to the right (no sidebar video list). After a second, the sidebar loads in pushing the video to the 'normal' position, and as soon as this happens the video--that has played around 1 second--fails.

I have disabled all addons, refreshed firefox, disabled HW accel. Starting Firefox in safemode completely breaks it and I can't even navigate to a page, let alone test YouTube. I've reinstalled only 2 of the addons I had before since they're clearly not the issue.

Win10 1803, Firefox Quantum 61, Nvidia GTX 1080ti (driver WHQL 398.36)

Macbook pro 2011 OS X 10.9.5

Addons: Ghostery Adblock YTcenter Firebug Reddit Enhancement suite

Error message in YT-player: An error has occured, please try again later. Learn more.

Flash player is either screwed up or something else - or Firefox is blocking videos. Having experienced problems (videos just sit there or won't load at all) I've just uninstalled Flash Player and am attempting to reinstall a new version - but it won't let me. Seemingly there's another version being loaded - but no way can I find that or know what's happening, so I'm stuck.

The whole thing stems from my inability to watch any videos on Firefox - not even YouTube, BBCi LiveLeak clips or even porn. Yesterday everything went well but today I can't even see gifs on Imgur. What the hell is happening? Why is Firefox blocking me?

iam currently using acer nitro 515-52 with ubuntu 18.04 as my base os and whenever i try to access the live videos on you tube the following error occurs "our browser does not currently recognize any of the video formats available. Click here to visit our frequently asked questions about HTML5 video". I have only browsec plugin installed on my extensions. I even tried to reinstal my firefox but the same error occurs. kindly suggest me an article so that i can overcome this issue.

an invisible screen. Sometimes, I can remove it using Inspect Element. For example, on YouTube, the block is coded;

<div id="theater-background" class="player-height"></div>

After I remove the above, the block is gone. How can I get this to not be there in the first place?

I am unable to watch videos in Firefox since the last update. There is a spinning wheel and it never finishes loading. Since I reinstalled FF, there are no external plugings. Tried re-install, restart, nothing worked. They do play properly in Chrome.

hey guys, i wasnt sure where i could put this info, i have discovered some info regarding the "FLASH PLAYER PLUGIN." that doesnt seem to be documented on any kb article or support thread, so hopefully one of you will be able to help getting this submitted. obviously this wont fix everyone's problem, but it should be included.

THE PROBLEM::

Flash Player Hanging or Crashing (unable to watch flash/video content) Script has become unresponsive error message when trying to view flash/video content

THE SOLUTION:

a possible cause to this problem is that you have lost permissions to the file directory where flash is actually stored. without these permissions you will be unable to properly utilize the flash plugin on firefox.

to fix the problem we will need to update the security settings on the flash directory.

for 32 bit machines: C:\Windows\system32\Macromed\Flash

for 64 bit machines: C:\Windows\SysWOW64\Macromed\Flash

navigate to the \Macromed\ folder and right click on the flash folder and select properties. click on the security tab at the top of this box then on the advanced button at the bottom of this box. after navigating to this screen, you will need to click change permissions. first make sure there is no deny statement which is denying access to this folder, if one exists, remove it. second make sure that the name "Everyone" has the abilty to read and execute, to do this: click on everyone, then edit. next, select: apply any changes to: "This folder, subfolders, and files." this is at the top of the edit box. after you click ok to the changes you made, you will need to enable the option: "Replace all child object permissions with inheritable permissions from this object." now click the apply button, then ok button. now check to see if firefox is working.

if you find that you are unable to change these permissions, then you lost access to the parent folders as well and they are replacing child object permissions. you will need to apply the solution above to the parent folder that is overriding the permissions. this will either be: \system32\ or \SysWOW64\ depending on your machine or possibly even the \Windows\ folder.

If you find that these parent folders indeed had their permissions lost, then you have likely acquired some malware. You should download Malwarebytes Anti-Malware and do an update and full scan.

So I have been using Firefox to watch various videos on my PC for a while, and never had any issues. Earlier in the week I ran into an issue with the picture on the videos I will be watching freezing at a certain point. Usually when this occurs, the sound will continue to run, but the picture on the screen will just stay frozen. And to clarify, it is just the picture in the video that freezes, no issues with Firefox freezing. Also, it is important to note that at times the sound will hop to the end of the video (while the video continues the play at the point it was at), and I have even seen the picture freeze with the sound hopping to the end of the video.

To clarify, when the video picture freezes, there is no way (that I have found at least) to move beyond that point in the video. In essence, the video is useless after this issue pops up: something such as buffering does not solve the issue.

I noticed this issue only after my PC upgraded to Firefox 37.0.1. While I am not 100% certain the issues started after the upgrade, I am fairly certain, as I ran a video in chrome and it worked without any hitches. That led me to believe it is a Firefox issue, hence why I am asking it here. I prefer Firefox to chrome, so I hope someone can help me out in resolving this issue so I can stick with Firefox.

Any remedies?

Thanks in advance for all the help :)

Can I provide any more info to spark some answers? Let me know if I left any gaps that make resolving the issue challenging.

Ever since FF 37 was released I have been unable to view most videos on the web with the exception being YouTube It either buffers eternally or simply gives me a black screen.

Thanks :3

Yes hello, as the title says some videos go slow after i pause em to look on something else, specifically in a site called animeplus.tv i watch the videos there, then i pause em for a bit to check for something else, or another video in another site or well whichever reason, the thing is when i return to this video and resume playing it, it gets very slow playback, the audio is fine, but the video itself is not working properly, so far i just seen this issue happen in that website but perhaps is the flash player? i dunno i removed a addon that i though could be the issue but is not. and when i try this on Google Chrome, it works fine, i pause the video check for other stuff, and the video still plays like normal. so i am hoping for some ideas in what to do cause i do like Firefox and i do not want to transfer over to another browser.

When playing a video in background / different tab, the picture (screen) freezes after a few seconds, while sound still going on. It can be resolved by moving over the video picture with mouse cursor again, but it is nagging... Any idea what causes this? I noticed it in Youtube, but also Facebook videos...

I've used duolingo via firefox for months. Today the sound effects stopped working. They work fine on Safari. Firefox is my preferred browser, but I'll switch if I have to. Thanks

In Firefox video frames don't scale properly. This affects both HTML5 videos e.g. youtube.com and Flash videos e.g. twitch.tv. When switching to Cinema view in youtube, or closing the side panels in twitch, the frame will extend to the left and right, leaving black bars at the side, but the video does not scale and the frame does not increase in height. I don't have the issue in Safe Mode and also not in Chrome. However I still have the issue in Firefox with all extensions disabled. I tried to delete cookies, cache and refresh Firefox, but the issue still exists. I also tried to disable Hardware acceleration in both the Flash Player and Firefox, but that also does not solve the issue.

I've recently built a desktop PC with this configuration:

Ryzen 7 1800X

Geforce GTX 750 Ti (driver version: 399.07)

16GB DDR4 RAM

250GB SSD + a HDD for data only, no system files

Windows 10 64bit

External Sound card Scarlett 2i4 1st gen. [it worked fine with my old Windows7 desktop]

Any audio (soundcloud, zophar.net/music) or video (youtube, twitch, facebook) stream has the same problem: it randomly skips frames. I mean that video nor audio are interrupted, they continue, but they skip some "frames".

This bug occurs with the current official version, the current beta version and the current Nightly.

This bug does not occur on my laptop, windows 8 running an i5 CPU and no dedicated GPU.

This bug does not occur on other apps. I've tried: VLC, Facebook app, Twitch app, Microsoft Edge, Internet Explorer, Winamp.