[Bug 734424] videorate produces bogus output when framerate=0/1

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=734424
  GStreamer | gst-plugins-base | 1.4.0

--- Comment #7 from Jan Alexander Steffens (heftig) <jan.steffens at gmail.com> 2014-08-27 10:40:34 UTC ---
Yes, indeed. Automatic frame rate detection would be nice now that avdec_h264
does not do it anymore.

Though, arguably a "perfect" stream can still have a variable frame rate. IMO
perfect just means that all frames have proper time stamps and durations. In
that case videorate could just clip (and drop) frames and insert a single
variable-duration gap frame for any gaps it encounters.

Perhaps a property could be used to force a fixed frame rate; or downstream
could set caps with the framerate field being a LIST of acceptable rates or a
FRACTION_RANGE that does not contain 0/1 but starts at a minimum acceptable
rate.

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