scripting - Merge AVI files with partial sound tracks -

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i need merge 2 avi files sound tracks substantially shorter video ones - i.e. can minutes of video without sound @ end. when merge either transcode or mencoder, sound , video merged "independently", resulting in avi file audio glued , silence glued , put @ end causing enormous loss of sync between audio , video. there way merge files file boundaries left intact , sound attached proper video frames? need linux command-line solution.

edit: here code using:

avimerge -i file.avi file2.avi -o result.avi   mencoder -oac copy -ovc copy -o result.avi file1.avi file2.avi

there tool in ubuntu repository called avidemux seems should need.


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