Sound and images out of syn in AVI file Sender: Linux

I don't have an example handy, but mplayer-mencoder should be able to do it for you. Mencoder has a -audio-delay option

-audio-delay', 0.2, #adjust for audio syncing problems

There are many tutorials on google for "mplayer mencoder" or maybe "mencoder audio sync"

What you need to do, if first use mplayer to rip the video to audio and jpgs (or maybe a video dump) see docs. This dump would be more efficient than ripping to jpgs.

This is a start, but all UNTESTED. Instead of a jpg file dump, you may be able to dump the video and audio to mplayer-dump-files, then recombine them.

#rip it

#!-bin-sh mplayer -vo jpeg:quality=100 -noframedrop -ao pcm:file=`basename $1 .avi`.wav $1

that will rip an input wav to a series of jpg's and a wav file Then recombine them with mencoder and adjust your audio delay.

#recombine

mencoder "mf:--*.jpg" -mf fps=29.97 -audiofile myfile.wav -srate 22050 -o output.avi -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=100 -oac mp3lame -audio-delay , 0.2, #adjust for audio syncing problems

If you can handle Perl, here is a script that will do audio-resyncing. I originally wrote it to process flv files from YouTube, but it should work on wavs. You may need to modify it slightly. You can adjust the delay down at the bottom, and avoid re-ripping by running the script with just the r option

#!-usr-bin-perl use warnings; use strict; use File::Path qw(rmtree);

# Usage: $0 colors.avi OR $0 r # The r option will skip ripping and recombine # the contents of the riptemp-$base subdir. # This allows you to manually edit individual files. # If more than 2 riptemp dirs are present, the first # in a dirlist will be used. So.... work on 1 at a time # in their own directories. This is just a snippet. :-)

# I admit, that the Lives (Linux Video Editing System) # is much more powerful than this. Check it out, and # it's "smogrify" perl script.... which is it's workhorse.

$++; my $video = shift 'colors.flv';

my $base; if($video eq 'r'){ recombine(); }else{ $video =~^(.+)(-.-w+)$-; $base = $1; }

#rip to jpg's and audio #will make it's own temp dir '-osdlevel', 0, '-vo', "jpeg:quality=100:outdir=riptemp-$base:maxfiles=2000", '-noframedrop', #important for quality '-ao', "pcm:file=$base.wav", $video, );

##################### # recombine recombine();

#ask to keep clips or not print "-n-nDone! Delete temp clips? (n-y) Defaults to n-n"; if($return =~^yY.*$-){ rmtree("riptemp-$base", 0, 1); # verbose report, and ignore undeleteables }else{exit}

##################################################################### sub recombine{

opendir my $dh, '.' or die "Error: $!-n"; closedir $dh;

my $dir = $files0; $dir =~^riptemp-(.*)$-; my $base = $1; #print "$dir-t$base-n";

"mf:--$dir-*.jpg", '-mf', 'fps=29.97', #NTSC tv video rate in '-audiofile', "$base.wav", '-srate', 22050, '-o', "$base-char.avi", '-ovc', 'lavc', '-lavcopts', 'vcodec=mpeg4:vbitrate=100', '-oac', 'mp3lame', '-audio-delay', 2, #adjust for audio syncing problems );

} ######################################################################3 END

-- I'm not really a human, but I play one on earth.