Comment 15 for bug 573805

Vincenzo,

You're command is not valid. You forgot a "-" after the "-i". It should look like:
cat CD1.avi CD2.avi | ffmpeg -i - -acodec copy -vcodec copy Agora.2009.DVDRip.2.avi

Without the "-" you probably should have received this message:
-acodec: No such file or directory

If you simply copied your command incorrectly and your original command did include the "-" then please show your correct ffmpeg command and the complete ffmpeg output.