Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Having problems veiwing h264 videos larger than 2 gb, they refuse to play, in either windows or mac verison of FF. less than 2 gb they play fine.

more options

I work for a video company encoding videos, The only problem we have is Firefox not playing videos encoded as H 264 (1080) larger than 2 gb, as they won't play. I Tried both current version 9.0.1 in mac and windows and no change. In IE, Chrome, the video plays fine. Is there a file limitation in Firefox? as I read someplace else that FF also has problems uploading 2 gb files, don't know of that's related. Any help would be appreciated.

I work for a video company encoding videos, The only problem we have is Firefox not playing videos encoded as H 264 (1080) larger than 2 gb, as they won't play. I Tried both current version 9.0.1 in mac and windows and no change. In IE, Chrome, the video plays fine. Is there a file limitation in Firefox? as I read someplace else that FF also has problems uploading 2 gb files, don't know of that's related. Any help would be appreciated.

Chosen solution

Firefox doesn't even play H264 content by default. For HTML5 video it will play OGG / Theora and WebM, but a plugin is needed for H264 content.

Read this answer in context 👍 0

All Replies (4)

more options

Chosen Solution

Firefox doesn't even play H264 content by default. For HTML5 video it will play OGG / Theora and WebM, but a plugin is needed for H264 content.

more options

ok, I'm corrected that HTML 5 support for h264 is not present in FF at the moment. SO if the Video hand-off to flash to play the video in Firefox would be the cause of the File size limitations, then it's Adobe's issue then, correct?

more options

oh sorry thanks btw for the quick answer! :)

more options

Sorry, Mozilla is never going to support H264 due to it not being free and/or open source.

Sorry, I have no idea about a 2GB limit, it there is one.