862816 - Motion JPEG webcam stream disappears regularly with Firefox 22

Status: RESOLVED DUPLICATE of bug 861595

(Core :: Graphics: ImageLib, defect)

Description

[Lou Mergens]

User Agent: Mozilla/5.0 (Windows NT 5.1; rv:20.0) Gecko/20100101 Firefox/20.0
Build ID: 20130409194949

Steps to reproduce:

I started to look my Webcam at the URL  http://loumergens.dyndns.org/img/main.cgi?next_file=main.htm
Since the Change to Version 20.0.1 Firefox cant display my Webcam, i can only see the Webinterface.
If i switch Firefox to Offline-Modus i can see a still Picture from my Webcam.
If i switch now to Online-Modus and press F5 to reload the Picture, Firefox displays the Webcam-Image in Motion correctly.
I hope you understand my Problem, i don´t want to to use IE or other Browsers, because i prefer my loved Firefox.
Is there a Solution for me to fix the Problem with your Help or should i wait for the next Update?

Comment 1

[Loic]

Could you fix your website, I can't see the webcam stream to test.

Comment 2

[Lou Mergens]

Sorry, i must shut the Webcam down for one Day, because of cleaning Works with much Water in my Aviary, i start the Webcam tommorow Morning new. Thank you for your Patience!

Comment 3

[Loic]

Thanks, it works now.

There are 2 regression ranges.

1st regression: mjpeg stream of the webcam isn't displayed and the webpage loads endlessly

m-c
good=2012-12-05
bad1=2012-12-06
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=1942b4d64dc8&tochange=3c81e1c0d252

2nd regression: mjpeg stream appears during a few seconds then disappears then reappears a few min with the same error message displayed a ton
[14:51:46.301] SyntaxError: missing ) after argument list @ http://loumergens.dyndns.org/img/main.cgi?next_file=main.htm:152
Screenshot: http://i.imgur.com/E81SJMd.png

m-c
bad1=2013-04-10
bad2=2013-04-11
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=9db46ddfb517&tochange=2949e808ed33

Comment 4

[Alice0775 White]

I have filed Bug 864014 about 1st regression.

Comment 5

[Loic]

Thanks, so keep this current bug for the regression #2.

Comment 6

[Alice0775 White]

Attachment: testcase

2nd regression is triggered by error of image.

Steps to reproduce:
1. Open Web Console(Ctrl+Shift+K)
2. Open testcase
3. Wait

Actual Results:
"img error" shows in the console soon(5-6 sec after loading page)

Expected Results:
No error

Regression window(m-i)
No error:
http://hg.mozilla.org/integration/mozilla-inbound/rev/a703fa409b15
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20130409 Firefox/23.0 ID:20130409142132
Error:
http://hg.mozilla.org/integration/mozilla-inbound/rev/6ceb44926370
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20130409 Firefox/23.0 ID:20130409142734
pushlog:
http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=a703fa409b15&tochange=6ceb44926370
Suspected: bug 857906

Comment 7

[Alex Keybl [:akeybl]]

Patrick - can you take a look? It's suspected to be a regression from your patch.

Comment 8

[Patrick McManus [:mcmanus]]

(In reply to Alex Keybl [:akeybl] from comment #7)
> Patrick - can you take a look? It's suspected to be a regression from your
> patch.

I'm actively looking - you can follow along in 861595.

It's not a straight up regression of my patch (well, I don't think so - but I'm not sure yet).. its more a conflict of the resource loader work (mine) that was going on at the same time as the image thread decoding work.. so any obvious backout isn't really working without regressing something else. I've tried :)

I haven't figured out the root cause for what's going on yet.. but that's the track I'm on. when I understand that we can have an approach. probably need :seth to do the same.

Comment 10

[jeff.peelman]

As of 7 July 2013 @ 12:15EST, I tested the webcam link listed the comment by Lou Mergens and it functioned without issue or crashing.  The past issue appears to be fixed. ~ Jeff