Not supported video formats
To index video whose file extension is AVI, MOV, FLV, WMV, MPG,... ffmpeg 1.1.2 has to be compiled with the following added options (in the "configure command): --enable-gpl --enable-libx264.
If libx264 is not found, we must run the following command: sudo apt-get install libx264-dev.
Some examples of various files extensions are attached with that issue.