[gstreamer-bugs] [Bug 402076] New: videoscale 4-tap method broken for downscaling

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: HEAD CVS

           Summary: videoscale 4-tap method broken for downscaling
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: Uraeus at linuxrising.org
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


I tried the 4-tap videoscaler method today and it did not work nicely at
all. I am using the pipeline below:

gst-launch-0.10 filesrc
location=/home/cschalle/Desktop/animusic2dvd_m720p.mov ! decodebin2
name="decode" decode. ! ffmpegcolorspace ! videoscale method=2
qos=false ! "video/x-raw-yuv, width=(int)640, height=(int)360" !
ffmpegcolorspace ! schroenc ! queue ! oggmux name=mux ! gnomevfssink
location=file:///tmp/anime.ogg decode. ! audioconvert ! vorbisenc !
queue ! mux.

The output looked horribly pixelated and whats worse is that instead of
scaling the image down it cropped it. Any 720 HD clip should work with this
pipeline.


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