[FFmpeg-user] how to cancat seceral audio/video files

[Rafi Fisher]

hello

  i'm trying to concat 2 audio/video files using the command:

   ffmpeg -i concat:"intermediate1.mpg|intermediate2.mpg" -c copy
intermediate_all.mpg

 as is writen in: http://ffmpeg.org/faq.html#Concatenating-at-the-file-level

 but it does not cancat the 2 files only the first file is copied to the
intermediate_all.mpg

  thanks