[Chicago-talk] Forking and Memory

richard at rushlogistics.com richard at rushlogistics.com
Fri Mar 11 09:01:27 PST 2016

I have this code below that forks to convert a large uploaded video. I just tried a 72M video and got: 
 Route exception: Can't fork: Cannot allocate memory at /usr/local/share/perl/5.20.2/Mail/Transport/Sendmail.pm

Is there something wrong with my code or do I need more RAM?

    if ($file_stg =~ /MOV/) {
    #print "File is a MOV\n";
    if (my $kid = fork()) {
                waitpid($kid, 0); # let the child die
    } else {
        if (my $grandkid = fork) {
        POSIX::_exit(0); # the child dies here
        } elsif (defined $kid && $kid == 0) {
        # child
        system("ffmpeg -i $self->{_video_in} -vcodec libx264 -profile:v main -level 3.1 -preset veryslow -crf 23 -x264-params ref=4 -acodec copy -movflags +faststart -vf scale=-2:720:flags=lanczos $self->{_video_out}.mp4");
        system("ffmpeg -i $self->{_video_out}.mp4 -c:v libtheora -c:a libvorbis $self->{_video_out}.ogv");
        #exit 0;

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