[Bug 720104] New: videorate unusable with live streams

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=720104
  GStreamer | gst-plugins-base | unspecified

           Summary: videorate unusable with live streams
    Classification: Platform
           Product: GStreamer
           Version: unspecified
        OS/Version: All
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: salle.frederic at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Currently the videorate component insert a set of duplicated frames only at the
reception of a new buffer with timestamps in the past for that new frames. 

If you requested a framerate of 20fps and that your input stream is let say 1
fps, each time videorate receive 1 frame, it send a burst 19 duplication of the
previous frame with proper timestamps over the last second. 

If this behaviour is quite ok with non live streams, for live streams this
create a lag in your pipeline.
For live streams, you expect that a new frame is inserted every 50 ms (for a
target of 20fps).

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