Hi I found a bug when using "-t" parameter for ASF containers. File length is 120 seconds. I try to cut part of the file with 10 seconds duration, but get all file from 00:00:05 till the end. It's only happens with ASF container. What's wrong? ffmpeg -i split_1_wmv2.wmv -vcodec copy -acodec copy split_1_wmv2_2.wmv -ss 00:00:05 -t 10