[Bug 793284] New: h264parse: Expose framerate even if the fixed_frame_rate flag isn't set

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=793284

            Bug ID: 793284
           Summary: h264parse: Expose framerate even if the
                    fixed_frame_rate flag isn't set
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: nicolas at ndufresne.ca
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 368101
  --> https://bugzilla.gnome.org/attachment.cgi?id=368101&action=edit
Dumped SPS of the sample stream

I've came accross a test H264 byte-stream and was surprised to find out the
ffmpeg could make up a framerate where GStreamer could not. I've attached the
SPS dump, one can notice that fixed_frame_rate_flag is not set. After going
through the spec, it seems that this flags has an implication on the decoder
processing of interleaved content, but it's not stated anywhere that the
framerate value is not valid.

All in all, I think FFMPEG is right, we should consider this framerate.

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