670620 - Security Error with toDataURL on a canvas with drawImage on a video loaded from a data URL

Status: RESOLVED DUPLICATE of bug 604496

(Firefox :: General, defect)

Description

[S. Roeder]

Attachment: demo.html

User Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-GB; rv:1.9.2.18) Gecko/20110628 Ubuntu/10.04 (lucid) Firefox/3.6.18
Build ID: 20110628230237

Steps to reproduce:

I'm working on a javascript conversion library, it would be nice to convert the video back into an image through canvas and modify it, but firefox always gives a security exception after calling toDataURL. I think it's something like the cross-origin image loading issues with canvas, but I don't believe data urls count as a different domain. Chrome allows this behavior.

For comparison I did the same with a image, but there is no security error thrown. I don't really understand the different treatment of image and video int toDataUrl of a canvas.


Actual results:

Security error" code: "1000


Expected results:

Same treatment as on loading a image.

Comment 1

[S. Roeder]

You can reproduce the error in the demo.html.

A different point of view is that maybe the not thrown security exception on loading a image in this case is the bug. Is it like this? This will have a deep impact on our software in future releases.