[FFmpeg-user] libutvideo causes Segmentation fault

[Johann Rekowski]

Hello dear ffmpeg developers,
I'm having trouble with recording a video using the utvideo codec. It
instantly causes a Segmentation fault (core dumped) once I start encoding.
I'm using the latest Arch Linux with the latest kernel from official
repositories (3.7.10-1-ARCH). I'm trying to do a screencast with the
utvideo codec. I have compiled libutvideo and ffmpeg from git with
following parameters:

libutvideo:
# git source: git://github.com/qyot27/libutvideo.git
  ./configure \
  --prefix=/usr \
  --enable-shared \
  --disable-static \
  --optlevel=3 \
  --enable-pic \
  --enable-asm=x64

  make

ffmpeg:
# git source: git://git.videolan.org/ffmpeg
  ./configure \
    --prefix=/usr \
    --disable-debug \
    --disable-static \
    --enable-libfaac \
    --enable-nonfree \
    --enable-avresample \
    --enable-fontconfig \
    --enable-gpl \
    --enable-libass \
    --enable-libbluray \
    --enable-libfreetype \
    --enable-libgsm \
    --enable-libmodplug \
    --enable-libmp3lame \
    --enable-libopencore_amrnb \
    --enable-libopencore_amrwb \
    --enable-libopenjpeg \
    --enable-libopus \
    --enable-libpulse \
    --enable-librtmp \
    --enable-libschroedinger \
    --enable-libspeex \
    --enable-libtheora \
    --enable-libv4l2 \
    --enable-libvorbis \
    --enable-libx264 \
    --enable-libxvid \
    --enable-postproc \
    --enable-runtime-cpudetect \
    --enable-shared \
    --enable-version3 \
    --enable-libutvideo \
    --enable-x11grab

  make -j8
  make tools/qt-faststart
  make doc

Here's the command line input:
ffmpeg -f x11grab -r 30 -s 1920x1080 -i :0.0 -vcodec libutvideo output.avi

Here's the output:
ffmpeg version N-36845-gcb2bd91 Copyright (c) 2000-2013 the FFmpeg
developers
  built on Mar 10 2013 14:46:38 with gcc 4.7.2 (GCC)
  configuration: --prefix=/usr --disable-debug --disable-static
--enable-libfaac --enable-nonfree --enable-avresample --enable-fontconfig
--enable-gpl --enable-libass --enable-libbluray --enable-libfreetype
--enable-libgsm --enable-libmodplug --enable-libmp3lame
--enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg
--enable-libopus --enable-libpulse --enable-librtmp
--enable-libschroedinger --enable-libspeex --enable-libtheora
--enable-libv4l2 --enable-libvorbis --enable-libx264 --enable-libxvid
--enable-postproc --enable-runtime-cpudetect --enable-shared
--enable-version3 --enable-libutvideo --enable-x11grab
  libavutil      52. 19.100 / 52. 19.100
  libavcodec     54. 92.100 / 54. 92.100
  libavformat    54. 63.104 / 54. 63.104
  libavdevice    54.  3.103 / 54.  3.103
  libavfilter     3. 44.100 /  3. 44.100
  libavresample   1.  1.  0 /  1.  1.  0
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
[x11grab @ 0x2319140] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 1920
height: 1080
[x11grab @ 0x2319140] shared memory extension found
[x11grab @ 0x2319140] Estimating duration from bitrate, this may be
inaccurate
Input #0, x11grab, from ':0.0':
  Duration: N/A, start: 1362924305.570385, bitrate: 1990656 kb/s
    Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1080,
1990656 kb/s, 30 tbr, 1000k tbn, 30 tbc
Output #0, avi, to 'output.avi':
  Metadata:
    ISFT            : Lavf54.63.104
    Stream #0:0: Video: utvideo (ULRG / 0x47524C55), bgr24, 1920x1080,
q=2-31, 200 kb/s, 30 tbn, 30 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo -> libutvideo)
Press [q] to stop, [?] for help
Segmentation fault (core dumped)

I have two questions regarding the libutvideo codec in ffmpeg:
#1: Did I compile utvideo right for ffmpeg or is this a bug?
#2: Where do I find the documentation for the arguments accepted by ffmpeg
for utvideo?
(e. g. -vcodec libutvideo -ULRG -predict-median -threads 8 etc.**)

Yours faithfully
Johann Rekowski
**