Log Message:
Update gstreamer1 and plugins to 1.14.4

Highlighted bugfixes in 1.14.3

     * opusenc: fix crash on 32-bit platforms
     * compositor: fix major buffer leak when doing crossfading on some
       but not all pads
     * wasapi: various fixes for wasapisrc and wasapisink regressions
     * x264enc: Set bit depth to fix "This build of x264 requires 8-bit
       depth. Rebuild to..." runtime errors with x264 version ≥ 153
     * audioaggregator, audiomixer: caps negotiation fixes
     * input-selector: latency handling fixes
     * playbin, playsink: audio visualization support fixes
     * dashdemux: fix possible crash if stream is neither isobmff nor
       isoff_ondemand profile
     * opencv: Fix build for opencv >= 3.4.2
     * h265parse: miscellaneous fixes backported from h264parse
     * pads: fix changing of pad offsets from inside pad probes
     * pads: ensure that pads are blocked for IDLE probes if they are
       called from the streaming thread too

Highlighted bugfixes in 1.14.4

     * glviewconvert: wait and set the gl sync meta on buffers
     * glviewconvert: Copy composition meta from the primary buffer to
       both outputs
     * glcolorconvert: Don't copy overlay composition meta over to NULL
       outbufs
     * matroskademux: add functionality needed for MSE use case fixing
       youtube playback in epiphany/webkit-gtk
     * msdk: fix build on windows
     * opusenc: fix another crash on 32-bit x86 on windows (alignment
       issue in SSE optimisations)
     * osxaudio: add support for parsing more channel layouts
     * tagdemux: Use upstream GST_EVENT_STREAM_START (and stream-id) if
       present
     * vorbisdec: fix header handling regression: init decoder immediately
       once we have headers
     * wasapisink: recover from low buffer levels in shared mode
     * fix GstSegment unit test which would fail on some 32-bit x86 CPUs