I was trying to cut a 5 second longer sengment from a video test.wmv (10 minutes length) starting from 00:03:00 position. So I used the following ffmpeg command.
ffmpeg -ss 00:03:00 -t 00:00:05 -i test.wmv -acodec libmp3lame -vcodec copy 1.wmv
But it gives me a output wmv that is 11 seconds longer which is twice the duration specified.
What am I doing wrong? Any idea?