Stuff

marius@marius-desktop:~$ mencoder -oac copy -vc null -format mpeg2 -o bla.aac QUbV8092aK0.mp4 -ovc copy
MEncoder 1.0rc4-4.5.2 (C) 2000-2010 MPlayer Team

WARNING: OUTPUT FILE FORMAT IS _AVI_. See -of help.
success: format: 0  data: 0x0 - 0x4bf6d5d
libavformat file format detected.
[lavf] stream 0: video (h264), -vid 0
[lavf] stream 1: audio (aac), -aid 0, -alang und
VIDEO:  [H264]  1920x1080  24bpp  29.917 fps  847.7 kbps (103.5 kbyte/s)
[V] filefmt:44  fourcc:0x34363248  size:1920x1080  fps:29.917  ftime:=0.0334
videocodec: framecopy (1920x1080 24bpp fourcc=34363248)
[format] Sample format big-endian MPEG-2 not yet supported 
[libaf] Unable to setup filter system can not meet sound-card demands, please send bugreport. 
Error at audio filter chain pre-init!

Exiting...