[gstreamer-bugs] [Bug 615471] Videoscale filter broken

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=615471
  GStreamer | gst-plugins-base | git

--- Comment #1 from David Schleef <ds at schleef.org> 2010-04-11 20:30:08 UTC ---
Are you scaling before or after deinterlacing?  videoscale attempts to do
interlaced-aware scaling (ffvideoscale does not) and could explain the
differences in the outputs.

Nevertheless, videoscale's method for scaling interlaced video is questionable
at best.  But it's still better than pretending that it's progressive.

(For the record, the best way currently in gstreamer to scale between
interlaced formats is to deinterlace, then scale, then reinterlace.  Um, except
for the part where you'd need to write an interlacing element.)

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