[gstreamer-bugs] [Bug 627971] vp8enc regenerate timestamps

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Sat Aug 28 09:24:28 PDT 2010


https://bugzilla.gnome.org/show_bug.cgi?id=627971
  GStreamer | gst-plugins-bad | 0.10.x

--- Comment #9 from Filippo Argiolas <fargiolas at gnome.org> 2010-08-28 16:24:23 UTC ---
(In reply to comment #5)
> This is not workaround. this is actual bug.

For the record, and for who doesn't want to go and read all the comments in the
dependent Cheese bug, the actual bug Alexey is talking about here is that most
webcams advertise a quite big framerate (say 30 fps) but actually output a
lower number of frames per second (usually around 10/15 fps with average/good
light conditions).
The bug here is that videorate duplicates missing frames to reach the
advertised framerate unnecessarily increasing (doubling when you're lucky but
even triplicating and quadruplicating) the load for the encoder.

This is especially an issue with container/encoders that don't support variable
framerate (theora+ogg) but vp8+webm seems a good solution so it would be great
to be able to use it from gstreamer.

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