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How to output avconv with pipe

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linux-howto

http://askubuntu.com – I am trying to pipe an output from avconv to grep but somehow the pipe is not working correctly. The following ways are not working: avconv -i MOVIE.mkv | grep SOMETHING - Which should show only the lines from the avconv that have SOMETHING in them. avconv -i MOVIE.mkv pipe: | grep SOMETHING - Which should show only the lines from the avconv that have SOMETHING in them. avconv -i MOVIE.mkv pipe:1 | grep SOMETHING - Which should show only the lines from the avconv that have SOMETHING in them. How can I output the information from avconv to pipe? Why is it not working? Piping something lik (HowTos)