What is gmpopenh264.dll?

gmpopenh264.dll is usually located in the 'c:\documents and settings\%USERNAME%\desktop\old firefox data\krw2g2bn.default-1359144506687\gmp-gmpopenh264\1.1\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about gmpopenh264.dll.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

Vendor and version information [?]

gmpopenh264.dll does not have any version or vendor information.

Digital signatures [?]

gmpopenh264.dll is not signed.

VirusTotal report

None of the 53 anti-virus programs at VirusTotal detected the gmpopenh264.dll file.

None of the 53 anti-virus programs detected the gmpopenh264.dll file.

Filename variants

gmpopenh264.dll may also use other filenames. The most common variants are listed below:

Folder name variants

gmpopenh264.dll may also be located in other folders than c:\documents and settings\%USERNAME%\desktop\old firefox data\krw2g2bn.default-1359144506687\gmp-gmpopenh264\1.1\. The most common variants are listed below:

Hashes [?]

PropertyValue
MD57cc4965741508bb6ac40e366f5190cf0
SHA2569d4e7158cea716731f8240aa1b74816cdc67062f6746516a3e1574dbaeb0a1af

What will you do with the file?

To help other users, please let us know what you will do with the file:



What did other users do?

The poll result listed below shows what users chose to do with the file. 61% have voted for removal. Based on votes from 416 users.

User vote results: There were 254 votes to remove and 162 votes to keep

NOTE: Please do not use this poll as the only source of input to determine what you will do with the file.

Malware or legitimate?

If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.

Please select the option that best describe your thoughts on the information provided on this web page


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Comments

Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

Roger Karlsson writes

5 thumbs

I think gmpopenh164.dll is part of the OpenH264 plugin that comes with Firefox 33+. Anyone having problems with this file?

"When you open Firefox 33 for the first time after upgrading the browser or installing it anew, you will notice that the OpenH264 plugin is now included under plugins automatically.

This can be used by the browser to decode and encode H.264 video so that these videos play in the browser now. If you check the HTML5 page on YouTube for instance you will notice that Firefox supports H.264 now which it did not before."

source: http://www.ghacks.net/2014/10/14/firefox-33-find-out-what-is-new/

# 30 Oct 2014, 13:04

Colin Buckingham writes

-1 thumb

Comment about the above issue.
Still not 100% sure about ''gmpopenh264.dll'', but Firefox says it's safe/ok so that will do for me.

# 1 Nov 2014, 9:27

Reza K. Ghazi writes

5 thumbs

OpenH264 Video CODEC provided by Cisco Systems, Inc.

This is a video CODEC plugin for Mozilla Firefox.

More information could be found in the following link:

http://www.openh264.org/

And also:

http://blogs.cisco.com/collaboration/open-source-h-264-removes-barriers-webrtc

And then:

https://blog.mozilla.org/blog/2013/10/30/video-interoperability-on-the-web-gets-a-boost-from-ciscos-h-264-codec/

It should be safe. I didn't see any suspicious activity from the file in the duration of 2 months.

# 2 Nov 2014, 7:18

Inge writes

1 thumb

Norton detected it and approved. I am keeping it.

# 8 Nov 2014, 2:33

Roger Karlsson writes

2 thumbs

This page about gmpopenh264.dll is currently getting lots of traffic. Is there some problem or error message related to gmpopenh264.dll that recently appeared?

# 6 Feb 2015, 6:43

piecemeallamb2dslaughter writes

0 thumbs

it's open source.

# 6 Feb 2015, 9:56

Richard Stedman writes

1 thumb

Norton Internet Security picked it up on my laptop and said it was safe.

# 6 Feb 2015, 11:52

Bill T writes

1 thumb

I installed Flash in Firefox and Norton popped up saying "gmpopenh264.exe was safe." Otherwise I would not have noticed it. I googled and checked one sight "herd..." something, which said it was malware from Eastern Europe and that they would clean it for me. I'm suspicious of their claims so I checked your sight, thankfully. Your sight is much more informative. I will hold off on deleting it until I get trustworthy confirmation that it is malicious.

# 7 Feb 2015, 20:04

kukilin writes

1 thumb

se abre Download Manager cada vez que abro la PC pidiendome descargar el archivo gmpoponh264.dll¿cómo se elimina esto? no puedo quedarme ni abrir algo que no conozco ni para que es, tiene fecha del 15 de enero 2 veces en distinto horario

# 13 Feb 2015, 5:58

Roger Karlsson writes

1 thumb

@Bill: Thanks for the feedback!

# 15 Feb 2015, 8:02

Matt writes

0 thumbs

I got a popup from Norton saying that "gmpopenh264.dll is safe".
I was alarmed coz it seemed like the file just downloaded itself.
Since then my computer has been slammed with pop-ups.

# 19 Mar 2015, 21:47

Matt writes

0 thumbs

By the way, before that my computer was perfectly fine.

# 19 Mar 2015, 21:48

Carly writes

1 thumb

I just found this file.. long overdue mind you.. along with a bunch of CNCARBO.DLL, CNMLR.DLL, AND CNMSR.DLL... which are known bad news. I am so lucky! haha.. but I just wanted to comment that my GMPOPENH264.DLL is a variant MD5 file # EA3D36516F6119E7480912BC6ABA432F. add it to the list!
The title also says POP.. how coincidental the popups have increased! Thanks good luck and wish me some!

# 18 Jan 2016, 15:27

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