1131478 - YouTube html5 video no playback

Status: VERIFIED WORKSFORME

(Core :: Audio/Video, defect)

Description

[chaosfreedom1220]

Attachment: Nightly64 raw 21015.txt

User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:38.0) Gecko/20100101 Firefox/38.0
Build ID: 20150209030204

Steps to reproduce:

Try to play HTML5 video on YouTube. No playback at all. Tried new profile using both the "refresh nightly" button on about:support as well as the old fashion deletion of profile from root folder. Firefox 35 and 36 work perfectly. IE does as well. 


Actual results:

No playback at all. Zero audio or video no matter how long I wait. 


Expected results:

Audio and video playback of HTML5 video on YouTube.

Comment 1

[chaosfreedom1220]

Attachment: nightly64 21015.txt

Comment 2

[Steve Chessin]

I have this problem too, with Firefox 35.0.1 on MacOSX 10.9.5. I have the latest Flash (16.0.0.305). I can play flash videos from other web sites, and I can play Youtube videos in Safari, but I can't play Youtube videos in Firefox. (I think the problem started before 35.0.1.) All I see is the stylized "f" and it is not clickable. (I'll attach a screen shot.)

Comment 3

[Steve Chessin]

Attachment: youtube.problem.png

This is all I get from videos on Youtube with Firefox. I used to be able to click on the "f" and the video would load and play. (I can do this on other websites that have Adobe Flash content.) But beginning sometime before 35.0.1 the "f" became unclickable.

Comment 4

[Virtual_ManPL [:Virtual] 🇵🇱 - (please needinfo? me - so I will see your comment/reply/question/etc.)]

Please test it with a clean fresh new Firefox profile without any addons and plugins.

Comment 5

[chaosfreedom1220]

I have with no luck

Comment 6

[Steve Chessin]

(In reply to Virtual_ManPL [:Virtual] from comment #4)
> Please test it with a clean fresh new Firefox profile without any addons and
> plugins.

How do I do that?

Comment 7

[Virtual_ManPL [:Virtual] 🇵🇱 - (please needinfo? me - so I will see your comment/reply/question/etc.)]

In simplest way go to:
C:\Users\YOUR_ACCOUNT_NAME\AppData\Roaming\Mozilla\Firefox\Profiles\SOME_SIGNS.default
and rename "SOME_SIGNS.default" to ex. "SOME_SIGNS.default-BACKUP" so you can revert it if it still be happening in clean fresh new profile

Comment 8

[Marcia Knous [:marcia]]

Looks as if you are both using the Flashblock addon? In installed it on my 10.9.5 machine and I am still able to click the "F" button and the video plays fine.

Comment 9

[chaosfreedom1220]

Im not using Flashblock at all. I am using Ad Block Plus and its pop-up blocker extension.

Comment 10

[Virtual_ManPL [:Virtual] 🇵🇱 - (please needinfo? me - so I will see your comment/reply/question/etc.)]

So please test it with a clean fresh new Firefox profile without any addons and plugins,
and report back if it still happens or not.

Comment 11

[chaosfreedom1220]

As I stated above in comment #5, I already have done that. I reinstalled them after testing. I think me and the other guy are having different issues as any older youtube videos that are still Flash-based works. It is strictly HTML5 failing for me.

Comment 12

[chaosfreedom1220]

Every update for Nightly I try at minimum using the "restart nightly" button in about:support every time hoping for a change.

Comment 13

[Marcia Knous [:marcia]]

chaosfreedom: Can you please try disabling DXVA:

Set the pref "media.windows-media-foundation.use-dxva" to "false"in about:config and then restart.

Comment 14

[chaosfreedom1220]

Did that. No luck. Im going to add two attachments that are snips of a video. One of what it does, and the other of the stats YouTube gives for the video.

Comment 15

[chaosfreedom1220]

Attachment: Capture.JPG

Capture of HTML5 video constantly buffering, never starting.

Comment 16

[chaosfreedom1220]

Attachment: Capture2.JPG

Stats given by YouTube from the video. As displayed some of the video was parsed with a few frames decoded but nothing else. This is after letting the video try to load for ~5 minutes.

Comment 17

[Virtual_ManPL [:Virtual] 🇵🇱 - (please needinfo? me - so I will see your comment/reply/question/etc.)]

Please update your GPUs drivers to the latest ones and post graphics section info from about:support if it still happens.
e10s is enabled as I see, it still happens if disabled?
disabling HW Acc helps in any way?

If you can, you may try finding a regression range as it will be needed probably next to get this bug fixed faster:
- first try mozilla-central builds:
https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/
- next, deeper in mozilla-inbound builds:
https://ftp.mozilla.org/pub/mozilla.org/firefox/tinderbox-builds/

Before this, try Firefox stable, Beta and Aurora to make it sure it's really a regression.

Comment 18

[chaosfreedom1220]

35.0.1 works

Comment 19

[chaosfreedom1220]

So far I have gone back to Jan 19th. Totally dead here. 

Just so its here.

Nvidia drivers: 347.52

Comment 20

[chaosfreedom1220]

I don't understand why, but I decided to see if this was directly a Windows issue so I reformatted my entire system and now it works. So maybe it was something with Nightly communicating with the kernel or graphics drivers through Windows 7 that can corrupt the process? I guess we can call this resolved, but I suspect maybe some others could be effected by this if it's something that can happen due to odd software to OS communication issue. Could just be one of those random glitches Windows has that cannot be explained. Who knows.

Comment 21

[chaosfreedom1220]

Ill switch this to resolved, I guess.