D:\Documents\ShareX\Tools> .\ffmpeg -y -rtbufsize 100M -f gdigrab -framerate 24 -offset_x 0 -offset_y 0 -video_size 1920x1080 -draw_mouse 1 -i desktop -f dshow -i audio="virtual-audio-capturer" -c:v libx264 -r 24 -crf 30 -preset fast -tune zerolatency -pix_fmt yuv420p -c:a libvorbis -qscale:a 3 "output.mp4"
ffmpeg version N-65142-gd76675d Copyright (c) 2000-2014 the FFmpeg developers
  built on Jul 31 2014 22:10:14 with gcc 4.8.3 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
  libavutil      52. 94.100 / 52. 94.100
  libavcodec     55. 71.100 / 55. 71.100
  libavformat    55. 50.100 / 55. 50.100
  libavdevice    55. 13.102 / 55. 13.102
  libavfilter     4. 11.102 /  4. 11.102
  libswscale      2.  6.100 /  2.  6.100
  libswresample   0. 19.100 /  0. 19.100
  libpostproc    52.  3.100 / 52.  3.100
[gdigrab @ 00000000044f8f20] Capturing whole desktop as 1920x1080x32 at (0,0)
Input #0, gdigrab, from 'desktop':
  Duration: N/A, start: 1406909931.403424, bitrate: 1592535 kb/s
    Stream #0:0: Video: bmp, bgra, 1920x1080, 1592535 kb/s, 24 tbr, 1000k tbn, 24 tbc
/ * it hangs here and I'm forced to ctrl+c, which results in no file being written */