Znalazłem w internecie sposób na konwersję filmu z rmvb do xvid. http://ni.recoverydata.pl/content/konwersja-filmu-z-formatu-rmvb-do-avi-mencoder
Wpisuję do terminala:
mencoder NAZWAFILMU.rmvb -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=900:autoaspect -ffourcc xvid -oac lavc -lavcopts acodec=mp2:abitrate=128:atag=0x50 -o film.avi
Niestety w trakcie konwersji wyskakuje błąd: :?
MEncoder SVN-r1.0~rc3+svn20090426-4.4.3 (C) 2000-2009 MPlayer Team
success: format: 0 data: 0x0 - 0x3117d55e
REAL file format detected.
Stream description: Audio Stream
Stream mimetype: audio/x-pn-realaudio
[real] Audio stream found, -aid 0
Stream description: Video Stream
Stream mimetype: video/x-pn-realvideo
[real] Video stream found, -vid 1
Stream mimetype: logical-fileinfo
VIDEO: [RV40] 1280x536 24bpp 23.000 fps 0.0 kbps ( 0.0 kbyte/s)
[V] filefmt:11 fourcc:0x30345652 size:1280x536 fps:23.000 ftime:=0.0435
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
[cook @ 0x9fc89c0]MC_COOK not supported!
Could not open codec.
ADecoder init failed :(
ADecoder init failed :(
Opening audio decoder: [realaud] RealAudio decoder
Error: libstdc++.so.5: cannot open shared object file: No such file or directory
Win32 LoadLibrary failed to load: cook.so, /usr/lib/codecs/cook.so, /usr/lib/win32/cook.so, /usr/local/lib/win32/cook.so
Error loading dll
ERROR: Could not open required DirectShow codec cook.so.
Read the RealAudio section of the DOCS!
ADecoder preinit failed :(
ADecoder init failed :(
Opening audio decoder: [realaud] RealAudio decoder
Decoder init failed, error code: 0x80040005
ADecoder preinit failed :(
ADecoder init failed :(
Opening audio decoder: [realaud] RealAudio decoder
Win32 LoadLibrary failed to load: cook.dll, /usr/lib/codecs/cook.dll, /usr/lib/win32/cook.dll, /usr/local/lib/win32/cook.dll
Error loading dll
ERROR: Could not open required DirectShow codec cook.dll.
Read the RealAudio section of the DOCS!
ADecoder preinit failed :(
ADecoder init failed :(
Opening audio decoder: [realaud] RealAudio decoder
Win32 LoadLibrary failed to load: cook3260.dll, /usr/lib/codecs/cook3260.dll, /usr/lib/win32/cook3260.dll, /usr/local/lib/win32/cook3260.dll
Error loading dll
ERROR: Could not open required DirectShow codec cook3260.dll.
Read the RealAudio section of the DOCS!
ADecoder preinit failed :(
ADecoder init failed :(
Opening audio decoder: [realaud] RealAudio decoder
Error: /usr/lib/codecs/cook.bundle/Contents/MacOS/cook: cannot open shared object file: No such file or directory
Win32 LoadLibrary failed to load: cook.bundle/Contents/MacOS/cook, /usr/lib/codecs/cook.bundle/Contents/MacOS/cook, /usr/lib/win32/cook.bundle/Contents/MacOS/cook, /usr/local/lib/win32/cook.bundle/Contents/MacOS/cook
Error loading dll
ERROR: Could not open required DirectShow codec cook.bundle/Contents/MacOS/cook.
Read the RealAudio section of the DOCS!
ADecoder preinit failed :(
ADecoder init failed :(
Cannot find codec for audio format 0x6B6F6F63.
Read DOCS/HTML/en/codecs.html!
==========================================================================
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
==========================================================================
Opening video decoder: [realvid] RealVideo decoder
Win32 LoadLibrary failed to load: drvc.dll, /usr/lib/codecs/drvc.dll, /usr/lib/win32/drvc.dll, /usr/local/lib/win32/drvc.dll
Error loading dll
ERROR: Could not open required DirectShow codec drvc.dll.
Read the RealVideo section of the DOCS!
VDecoder init failed :(
Opening video decoder: [realvid] RealVideo decoder
Win32 LoadLibrary failed to load: drv43260.dll, /usr/lib/codecs/drv43260.dll, /usr/lib/win32/drv43260.dll, /usr/local/lib/win32/drv43260.dll
Error loading dll
ERROR: Could not open required DirectShow codec drv43260.dll.
Read the RealVideo section of the DOCS!
VDecoder init failed :(
Opening video decoder: [realvid] RealVideo decoder
Error: /usr/lib/codecs/drvc.bundle/Contents/MacOS/drvc: cannot open shared object file: No such file or directory
Win32 LoadLibrary failed to load: drvc.bundle/Contents/MacOS/drvc, /usr/lib/codecs/drvc.bundle/Contents/MacOS/drvc, /usr/lib/win32/drvc.bundle/Contents/MacOS/drvc, /usr/local/lib/win32/drvc.bundle/Contents/MacOS/drvc
Error loading dll
ERROR: Could not open required DirectShow codec drvc.bundle/Contents/MacOS/drvc.
Read the RealVideo section of the DOCS!
VDecoder init failed :(
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffrv40] vfm: ffmpeg (FFmpeg RV40)
==========================================================================
Forcing output FourCC to 64697678 [xvid].
Segmentation fault
Dodam, że podczs odtwarzania Mplayer jest wideo, a dźwięku nie ma 
Czy ktoś mi pomoże ?
