[Bug 684815] New: vp8enc: altref frames are not generated on two pass mode

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=684815
  GStreamer | gst-plugins-good | git

           Summary: vp8enc: altref frames are not generated on two pass
                    mode
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: bug-track at fisher-privat.net
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


I use this script to transcode video. Normally vpx produce lots of altref
packets, but not with current gstreamer-1.0


in_file=""$1""
gst-launch-1.0 filesrc location="$in_file" ! decodebin ! vp8enc threads=3
multipass-mode=1 target-bitrate=800000 multipass-cache-file=multipass.cache
token-partitions=1 ! fakesink

gst-launch-1.0 filesrc location="$in_file" ! decodebin name=d webmmux name=m !
filesink location="$in_file.webm" d. ! queue ! vp8enc threads=3
multipass-mode=2 target-bitrate=800000 multipass-cache-file=multipass.cache
end-usage=vbr auto-alt-ref=1 keyframe-max-dist=360 min-quantizer=0
max-quantizer=60 token-partitions=1 ! m. d. ! queue ! audiorate
tolerance=50000000 ! audioconvert ! audioresample !
audio/x-raw,rate=44100,channels=2 ! vorbisenc ! m.

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