540127 - Firefox should restore plugins with autoplay disabled

Status: RESOLVED DUPLICATE of bug 495840

(Firefox :: Session Restore, enhancement)

Description

[Liam K.]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100105 Firefox/3.6 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100105 Firefox/3.6 (.NET CLR 3.5.30729)

I find that when restoring many tabs, the main cause of high CPU usage and freezing is when I have more than one YouTube page being restored. I have to navigate through all my tabs and pause the videos and/or mute my sound. If Firefox restored YouTube with autoplay disabled, it would make Session Restore much more efficient.

Reproducible: Always

Steps to Reproduce:
1. Open various YouTube videos.
2. Close Firefox.
3. Run Firefox and restore your last session.
Actual Results:  
Firefox tries to load all YouTube videos simultaneously.

Expected Results:  
Firefox should not start playing the videos automatically and/or implement a better way of restoring flash videos.

Comment 1

[u88484]

Note that this could potentially be useful (if something is exposed) for OOPP.  When a plugin crashes and the user is prompted about the crashed plugin and how many tabs crashed, the user would not need to reload each and every tab individually.  I think a big part of not being able to do that now is because of the autoplay causing a headache with N tabs making noise.

Comment 2

[Liam K.]

Here's a GreaseMonkey script, if it helps: http://userscripts.org/scripts/review/49366