Provided by: transcode-utils_1.1.5-0ubuntu10_amd64
avisync - adjust audio synchronisation
avisync [ -o file -i file -q -n num -b num -a track -f commentfile ]
avisync is Copyright (C) by Thomas Oestreich.
avisync shift audio on frame basis.
-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.
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.
avisync was written by Thomas Oestreich <email@example.com> with contributions from many others. See AUTHORS for details.