[Bug 796540] New: x264 destroying pts

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796540

            Bug ID: 796540
           Summary: x264 destroying pts
    Classification: Platform
           Product: GStreamer
           Version: 1.14.1
                OS: All
            Status: NEW
          Severity: major
          Priority: Normal
         Component: gst-plugins-ugly
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: asilby at yahoo.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

If I run 
gst-launch-1.0 videotestsrc is-live=true do-timestamp=true num-buffers=1 ! 
video/x-raw ! identity silent=false name=first ! x264enc ! video/x-h264 ! 
identity name=second silent=false !  fakesink -v 

then the dts and pts are changed and reset by the x264enc. I don't think 
this is correct as I would have thought that the pts should stay the same. 

The output of identity "first" is: 
******* (first:sink) (115200 bytes, dts: 0:00:00.011741158, pts: 
0:00:00.005870579, duration: 0:00:00.033333333 

The output of identity "second" which is post x264enc is: 
******* (second:sink) (5795 bytes, dts: 1000:00:00.000000000, pts: 
1000:00:00.000000000, duration: 0:00:00.033333333 

I've looked at other encoders and they keep the pts as you would expect.

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