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Old 09-26-2017, 05:20 PM   #1
coldbeer
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Anyone actually know why Firefox won't play some YouTube videos?


Anyone actually know why Firefox won't play some YouTube videos?

Random videos on YouTube won't play in Firefox.

These youtube users are making some choice when uploading
their videos. Videos on a channel up until last week
all play fine. The user uploads a new video and it doesn't
play.

I installed Alien Bob's 27.0 flash player - no help.

It just seems odd that this problem continues and I don't think anyone really knows what's going on with this.

Chrome works. VLC works. Firefox doesn't.

"You're browser currently doesn't recognise ANY of the video formats available."

Yet according to Youtube, I have 4 out of 6 decoders available.

I have various versions of Firefox on different computers - when a video doesn't play, it won't play on any of them.

I would like to know what the YouTube user is picking that is preventing Firefox from working so maybe I can tell him not to do whatever it is he is doing.

Last edited by coldbeer; 09-26-2017 at 05:21 PM.
 
Old 09-26-2017, 05:31 PM   #2
enorbet
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It's not just YouTube. I have gotten the same error message on several news sites for some of their videos. It appears to affect any Mozilla-based browser. I've tried 4 with same results. Flash's beginnings trace back to 1995 when the Internet was still a fairly small part of most peoples' lives. It's demise is long overdue. 2020 can't come fast enough to suit me.
 
Old 09-26-2017, 05:33 PM   #3
ChuangTzu
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sometimes if its a Vivo video it will not play if you block the ads or javascripts ie: if you use NoScript or uBlock etc....

Try using the addon UnPlug, it allows you to either download the video, copy paste in a media player or open in a separate tag without unblocking the tracking stuff....You can watch in webm mp4 etc...
https://addons.mozilla.org/en-US/fir...unplug/?src=ss

Last edited by ChuangTzu; 09-26-2017 at 05:35 PM.
 
Old 09-26-2017, 06:02 PM   #4
55020
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iirc, installing x264 from SBo solves this problem.
 
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Old 09-26-2017, 06:15 PM   #5
enorbet
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55020 - Actually it only solves a select few
 
Old 09-26-2017, 08:13 PM   #6
bassmadrigal
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Quote:
Originally Posted by 55020 View Post
iirc, installing x264 from SBo solves this problem.
That would be really odd, because x264 is supposed to only be an encoder, not a decoder.

Does it need ffmpeg or one of the gst packages? I vaguely remember Firefox used to require that before it would play a lot of videos.
 
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Old 09-26-2017, 08:14 PM   #7
jamison20000e
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I have FF, Nightly, Chrome and it's unstable so anything plays here...

Add: whoops, missed we're in the Slackware forum (from "View Latest Posts") tho may work there?

Last edited by jamison20000e; 09-26-2017 at 08:17 PM.
 
Old 09-26-2017, 09:58 PM   #8
montagdude
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It's rather impossible to help without linking to at least one of these videos. Are we supposed to go searching for them ourselves?
 
Old 09-27-2017, 06:29 AM   #9
chrisVV
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This may depend on which version of slackware, and therefore which version of firefox, you are using. What does https://www.youtube.com/html5 show? On slackware64-current, all six items are ticked as supported. This should show you at least what is missing in your installation.
 
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Old 09-27-2017, 10:29 AM   #10
svim
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Try going into your Firefox Preferences menu and in the Content section there's a 'Play DRM content' checkbox.
https://support.mozilla.org/en-US/kb...urce=inproduct
 
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Old 09-27-2017, 03:50 PM   #11
coldbeer
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Quote:
Originally Posted by montagdude View Post
It's rather impossible to help without linking to at least one of these videos. Are we supposed to go searching for them ourselves?
Sorry. Here is an example:

https://www.youtube.com/watch?v=dJtbmjfB-OM



Quote:
Originally Posted by svim View Post
Try going into your Firefox Preferences menu and in the Content section there's a 'Play DRM content' checkbox.
https://support.mozilla.org/en-US/kb...urce=inproduct
Yes, I did have that unchecked but checking it didn't help.


Quote:
Originally Posted by chrisVV View Post
This may depend on which version of slackware, and therefore which version of firefox, you are using. What does https://www.youtube.com/html5 show? On slackware64-current, all six items are ticked as supported. This should show you at least what is missing in your installation.
Doesn't seem to. I have slackware64 14.1 and 14.2 running FF 50, 52 and 55. All behave the same.



HTMLVideoElement=yes
H.264=no
WebM VP8=yes

Media Source Extensions=yes
MSE & H.264=no
MSE & WebM VP9=yes

The HTML5 player is currently used when possible.=yes
 
Old 09-27-2017, 04:30 PM   #12
55020
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So I did a little experiment.

I'm on 14.2 with
mozilla-firefox-52.3.0esr-x86_64-1_slack14.2
x264-20170225 from SBo
ffmpeg-3.2.4 from SBo, built with x264 and everything else

At https://www.youtube.com/html5 I get
HTMLVideoElement=yes
H.264=yes
WebM VP8=yes
Media Source Extensions=yes
MSE & H.264=yes
MSE & WebM VP9=yes

And https://www.youtube.com/watch?v=dJtbmjfB-OM plays ok. (Oh. my. god. what squalor!)


So I removed ffmpeg and x264, then restarted firefox.

At https://www.youtube.com/html5 I now get
HTMLVideoElement=yes
H.264=no
WebM VP8=yes
Media Source Extensions=yes
MSE & H.264=no
MSE & WebM VP9=yes

And https://www.youtube.com/watch?v=dJtbmjfB-OM won't play.


So I reinstalled ffmpeg and x264, then restarted firefox.

At https://www.youtube.com/html5 I now get
HTMLVideoElement=yes
H.264=yes
WebM VP8=yes
Media Source Extensions=yes
MSE & H.264=yes
MSE & WebM VP9=yes

And https://www.youtube.com/watch?v=dJtbmjfB-OM plays once again.

Oh ye of little faith
(Edit: Well, actually bassmadrigal did mention ffmpeg...)

I shudder to think what that youtube is going to do to my recommendations

Last edited by 55020; 09-27-2017 at 04:38 PM.
 
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Old 09-27-2017, 04:56 PM   #13
jamison20000e
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Quote:
Originally Posted by 55020 View Post
...
Do you like to overspend on "camping" or just won't?

Chrome installed from their website (never logged into google) is my default, FF if something won't fly... worked in both.

FF ESR 52.3.0 (64-bit)
GC 61.0.3163.100 (Official Build) (64-bit)

 
Old 09-27-2017, 09:55 PM   #14
bassmadrigal
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Quote:
Originally Posted by 55020 View Post
Oh ye of little faith
(Edit: Well, actually bassmadrigal did mention ffmpeg...)
I still don't think x264 is required as ffmpeg should be able to DEcode h264 without anything extra, it just can't ENcode without x264. But if you compiled ffmpeg with x264, then ffmpeg might bomb silently without it if you try to use it on Firefox without x264. I'd try it out, but it's late and my 14.2 computer is really slow and I don't know how long it would take to compile ffmpeg.

Quote:
Originally Posted by 55020 View Post
I shudder to think what that youtube is going to do to my recommendations
Just go to your youtube history and remove it. I have to do that occasionally when I click on some youtube links in reddit.
 
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Old 09-28-2017, 01:58 AM   #15
enorbet
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Well I didn't have ffmpeg installed but did recently add h264 because of this thread. I just installed AlienBob's ffmpeg slackbuild and after hassling with how exactly to enable a few options it compiled in 9 minutes and now all 6 html5 items are checked and so far all previously unplayable FF items play just fine. Damn! I love this community!
 
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