I reproduced this, it's a problem with the combination of the shipped ffmpeg and 1.8.3.
** Bug watch added: GNOME Bug Tracker #778283 https://bugzilla.gnome.org/show_bug.cgi?id=778283 ** Also affects: gstreamer via https://bugzilla.gnome.org/show_bug.cgi?id=778283 Importance: Unknown Status: Unknown ** Changed in: gst-libav1.0 (Ubuntu) Status: Confirmed => Fix Released ** Also affects: gst-libav1.0 (Ubuntu Xenial) Importance: Undecided Status: New ** Summary changed: - 0001-Only-use-AV_CODEC_ID_WRAPPED_AVFRAME-on-new-enough-l.patch fixes ftbfs but breaks plugin functionality + gstreamer 1.8.3 incorrectly removes some decoders and encoders when built against ffmpeg 2.8.10 ** Changed in: gst-libav1.0 (Ubuntu Xenial) Status: New => Triaged ** Changed in: gst-libav1.0 (Ubuntu Xenial) Importance: Undecided => High -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1661842 Title: gstreamer 1.8.3 incorrectly removes some decoders and encoders when built against ffmpeg 2.8.10 Status in GStreamer: Unknown Status in gst-libav1.0 package in Ubuntu: Fix Released Status in gst-libav1.0 source package in Xenial: Triaged Bug description: That is with the current ffmpeg shared in 16.04. So maybe consider reverting patch, i.e. 1.8.2-1 seems to work ok. Otherwise consider building with plugin supplied ffmpeg (called libav), there is recent precedent for static linking as seen by vlc last year. Sample files - wmapro http://samples.mplayerhq.hu/A-codecs/WMA9/wmapro/New%20Stories%20(Highway%20Blues)-2.wma wmal http://samples.mplayerhq.hu/A-codecs/lossless/luckynight.wma ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: gstreamer1.0-libav 1.8.3-1ubuntu0.1 ProcVersionSignature: Ubuntu 4.8.0-34.36~16.04.1-generic 4.8.11 Uname: Linux 4.8.0-34-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 CurrentDesktop: Unity Date: Sat Feb 4 08:51:10 2017 SourcePackage: gst-libav1.0 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/gstreamer/+bug/1661842/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp