858600 - When I put src with MJPEG stream adress value to <img> with JS no animation happens

Status: RESOLVED DUPLICATE of bug 861595

(Core :: Graphics: ImageLib, defect)

Description

[Dmitry Tabakerov]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1106.241 YaBrowser/1.5.1106.241 Safari/537.4

Steps to reproduce:

I have webcam streaming MJPEG and url where I can get camera's status. On webpage i have img-tag with src pointing to MJPEG stream.
If camera goes offline I change img's src to "Camera offline" placeholder image (by JS script)
When camera appears online again I change img's src back to stream.


Actual results:

But only one frame appears - no animation is going


Expected results:

Animation should play again

Comment 1

[tad]

You appear to not be using Firefox here. To confirm this bug, we need your script, also. Can you paste your webpage script to pastebin.mozilla.org? Thanks!

Comment 2

[Dmitry Tabakerov]

Attachment: Sample page to reproduce mjpeg problem

Sample file attached

1. Start browser and open index.html;
2. Firefox shows four animated pictures (from http://172.20.32.80:9082/mjpeg/cam2 );
3. We stop mjpeg camera, pictures become still;
4. We start the camera again. The JS should cause images to resume (which actually happens on Google Chrome 26.0.1410.43 m), but in Firefox pictures remains still;
5. We open Firebug and point mouse over <img> src attrubute. Firebug shows popup with animated mjpeg content in it. At the same time all four pictures on the page also become animated;
6. We press F5. Now it shows four still images that becomes animated when we resize the FF's window.

Comment 3

[tad]

Do you have issues on other browsers? I can't reproduce this, you used a local ip. I don't have any cameras that can stream in this way to hand, sadly

Comment 4

[Dmitry Tabakerov]

>Do you have issues on other browsers?
No, at Chrome and Opera seems to work fine

>I can't reproduce this, you used a local ip.
Sorry, but yeah, you have to be able to manualy start and stop mjpeg stream for it. Mayby using some public mjpeg stream and connect-disconnect internet connection will works?

Comment 5

[Vitaly "_Vi" Shukela]

Started public mjpeg server at http://vi-server.org:4444/

It streams mjpeg for 30 seconds, than fails with 404 for 20 seconds, in a loop.

(Source code and the sample file available at http://vi-server.org/pub/mjpeg_firefox/ )

Tested with "Chromium25.0.1364.160 (Developer Build 186726) Debian 7.0, x86" - works normally.

Tested with 17.0.4 "Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20100101 Firefox/17.0 " - fails.

Comment 6

[Matthias Versen [:Matti]]

What are now the steps to reproduce here with y<our testcase ?

Comment 7

[Vitaly "_Vi" Shukela]

1. Download the page in attachment,
2. Replace all mjpeg links with http://vi-server.org:4444/ (or download the program, start it locally and use http://localhost:4444/).
3. Try to open in Firefox and in Chromium, wait for about a minute.

Firefox: the video does not resume after periodic interruptions; Sometimes there is also weird state where it shows the next frame only when I switch tabs/resize/otherwise make it repaint.
Chomium: the video does resume after interruptions.

Comment 8

[Seth Fowler [:seth] [:s2h]]

It's possible that bug 791258 is related.