Totem cannot play H264 videos

[pramathesh ambasta]

I am opening a fresh bug report although I am aware that similar bugs have been reported in the past. This bug is on Ubuntu 21.04 and the other bug reports relate to much older versions of Ubuntu.

I have done a clean install of 21.04 and am unable to play H264 videos. Starting totem from a terminal gives the following messages:

** Message: 11:45:32.305: Missing plugin: gstreamer|1.0|totem|H.264 (High Profile) decoder|decoder-video/x-h264, level=(string)3.1, profile=(string)high, chroma-format=(string)4:2:0, bit-depth-luma=(uint)8, bit-depth-chroma=(uint)8 (H.264 (High Profile) decoder)
** Message: 11:45:35.429: PackageKit: xid = 0
** Message: 11:45:35.429: PackageKit: desktop_id = org.gnome.Totem.desktop
** Message: 11:45:35.429: PackageKit: Codec nice name: H.264 (High Profile) decoder
** Message: 11:45:35.429: PackageKit: ignoring field named level
** Message: 11:45:35.430: PackageKit: ignoring field named profile
** Message: 11:45:35.430: PackageKit: ignoring field named chroma-format
** Message: 11:45:35.430: PackageKit: ignoring field named bit-depth-luma
** Message: 11:45:35.430: PackageKit: ignoring field named bit-depth-chroma
** Message: 11:45:35.430: PackageKit: structure: gstreamer1(decoder-video/x-h264)()(64bit)
** Message: 11:45:35.553: Missing plugins installed. Updating plugin registry ...
** Message: 11:45:35.593: Plugin registry updated, trying again.
Segmentation fault (core dumped)

I have installed all gstreamer plugins and ubuntu-restricted-extras. VLC is able to play the same file. But totem crashes

Output of lsb_release -rd
Description: Ubuntu 21.04
Release: 21.04

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: libgstreamer1.0-0 1.18.4-1
ProcVersionSignature: Ubuntu 5.11.0-22.23-generic 5.11.21
Uname: Linux 5.11.0-22-generic x86_64
ApportVersion: 2.20.11-0ubuntu65.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Jun 30 11:41:14 2021
InstallationDate: Installed on 2021-06-22 (7 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
SourcePackage: gstreamer1.0
UpgradeStatus: No upgrade log present (probably fresh install)
XorgLog: Error: [Errno 2] No such file or directory: '/var/log/Xorg.0.log'