RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Description of problem:
Red Hat Firefox 45.2 does not load 3rd party FFmpeg libraries for HTML5/MP4 video.

Version-Release number of selected component (if applicable):
Firefox 45.2

How reproducible:
always

Steps to Reproduce:
1.
Install 3rd party FFmpeg libraries (e.g. nux-dextop)
2.
Start Firefox
about:support
Supports Hardware H264 Decoding: No; Compiled without MP4 support.
3.
https://www.youtube.com/html5

Actual results:
H.264 = NO, MSE & H.264 = NO

Expected results:
H.264 = YES, MSE & H.264 = YES

Additional info:
Mozilla Firefox 45.2 uses FFmpeg libraries for HTML5/MP4 if available.

Please report that at CentOS bugzilla, CentOS can enable that. We disabled ffmpeg support on RHEL6 because of Firefox crashes caused by ffmpeg library.

*** This bug has been marked as a duplicate of bug 1330898 ***