NAME

       avisync - adjust audio synchronisation

SYNOPSIS

       avisync [ -o file -i file -q -n num -b num -a track -f commentfile ]

COPYRIGHT

       avisync is Copyright (C) by Thomas Oestreich.

DESCRIPTION

       avisync shift audio on frame basis.

OPTIONS

       -o name
              Specify the name of the output file.

       -i file
              Specify the name of the input file.

       -q     be less verbose.

       -n count
              shift audio by count frames. If count is positive, audio starts with audio frame
              count at the beginning of the AVI-file. If count is negative, audio is prepended
              count padding frames.

       -a track
              Specify the number of the audio channel to shift.

       -b num Specify if avisync should write an VBR mp3 header into the AVI file. Default is 1
              because it does not hurt. num is either 1 or 0.

       -f commentfile
              Read AVI tombstone data for header comments from commentfile. See
              /docs/avi_comments.txt for a sample.

EXAMPLES

       The command

       avisync -i my_file1.avi -o out.avi -n -10

       puts 10 audio frames at the beginning of the AVI-file.

       E.g. if the audio is delayed about 200 ms (0.2 seconds) and you're working with a 25
       frames per second AVI-File, you need to shift the audio 200/40 = 5 frames since one frame
       is 40 ms long.

AUTHORS

       avisync was written by Thomas Oestreich
       <ostreich@theorie.physik.uni-goettingen.de> with contributions from many others.  See
       AUTHORS for details.

SEE ALSO

       aviindex(1), avifix(1), avimerge(1), avisplit(1), tccat(1), tcdecode(1), tcdemux(1),
       tcextract(1), tcprobe(1), tcscan(1), transcode(1)