what are the advantages/disadvantages of mpeg2decode and encode vs. convert?
-- William Sutton On Tue, 26 Jul 2005, Greg Brown wrote: > Yeah, true. I got everything to work using perl and mpeg2decode and > encode. This is going to be rather processor intenstive, to say the > least! But, alas, it will work. > > Now if only I had a quad or 8-way machine to do this kind of work > with. Or a Peintium Extreme, whever that comes out. That should at > least make for a fairly decent desktop/video server machine without > having to worry about extra cooling, power, etc > > Greg > > On 7/26/05, William Sutton <[EMAIL PROTECTED]> wrote: > > it shouldn't....because it's ls'ing a directory not a bunch of files. you > > can try this for yourself... > > > > ls -1rt /path/to/your/full/directory > > > > and should promptly see every file there scroll by. If you decide to use > > the code, note the unlink() call. Take it out if you want to keep the > > original files....or adapt the code to your purpose...this should be a > > decent start at what you want to do :) > > > > -- > > William Sutton > > > > On Tue, 26 Jul 2005, Greg Brown wrote: > > > > > Yeah, but wouldn't the ls called in your perl script still crap out > > > because of too many aruguments (files in the directory)? > > > > > > Greg > > > > > > On 7/26/05, William Sutton <[EMAIL PROTECTED]> wrote: > > > > It's not entirely hopeless...I tried the following and it appears to > > > > work... > > > > > > > > I created 4 .jpg files named 1.jpg through 4.jpg, containing the > > > > equivalent number. I then executed the following commands in sequence: > > > > > > > > touch num.mpeg > > > > convert -delay 0 num.mpeg 1.jpg num.mpeg > > > > convert -delay 0 num.mpeg 2.jpg num.mpeg > > > > convert -delay 0 num.mpeg 3.jpg num.mpeg > > > > convert -delay 0 num.mpeg 4.jpg num.mpeg > > > > convert -delay 0 num.mpeg 1.jpg num.mpeg > > > > convert -delay 0 num.mpeg 2.jpg num.mpeg > > > > convert -delay 0 num.mpeg 3.jpg num.mpeg > > > > convert -delay 0 num.mpeg 4.jpg num.mpeg > > > > convert -delay 20 num.mpeg num.mpeg > > > > > > > > You can see the files at http://trilug.org/~william/convert > > > > > > > > basically I think this can be made to work as I indicated below...see > > > > revised code: > > > > > > > > #!/usr/bin/perl > > > > #----- > > > > use strict; > > > > > > > > my $convert = `which convert`; > > > > chomp($convert); > > > > > > > > # change to suit your needs > > > > my $input_dir = "/home/william/convert"; > > > > my $output_dir = "/home/william/public_html/convert"; > > > > my $frame_delay = 20; > > > > > > > > my $output_file = "output.mpeg"; > > > > my @input_files = map { chomp($_); $_; } `/bin/ls $input_dir`; > > > > > > > > foreach my $file (@input_files) > > > > { > > > > `mv $input_dir/$file $output_dir`; > > > > `$convert -delay 0 $output_dir/$output_file $output_dir/$file \ > > > > $output_dir/$output_file`; > > > > unlink("$output_dir/$file"); > > > > } > > > > > > > > `$convert -delay $frame_delay $output_dir/$output_file \ > > > > $output_dir/$output_file`; > > > > > > > > #----- > > > > > > > > to join multiple mpeg files, I think you should be able to do the > > > > following: > > > > > > > > convert -delay 0 *.mpeg out.mpeg > > > > > > > > HTH! > > > > > > > > William Sutton > > > > > > > > On Mon, 25 Jul 2005, Michael Tharp wrote: > > > > > > > > > William Sutton wrote: > > > > > > > > > > >Maybe it's time to switch to Perl :) > > > > > > > > > > > >#----- > > > > > >my @file = map { chomp($_); $_; } `ls -1rt /path/to/files`; > > > > > > > > > > > >foreach my $file (@files) > > > > > >{ > > > > > > next unless -f "/path/to/files/$file"; > > > > > > > > > > > > `cp /path/to/file/$file /tmp/date`; > > > > > > # your convert code here > > > > > > # and, if you want, uncomment the next line > > > > > > # unlink ("/path/to/files/$file"); > > > > > >} > > > > > > > > > > > > > > > > > The problem here is that he's not converting multiple > > > > > files ito multiple files, but rather multiple files into one > > > > > file, so I'm not sure this approach will help any. Perhaps > > > > > convert batches of as many files as will fit in one command > > > > > line, then seam the files together? > > > > > > > > > > Michael Tharp > > > > > > > > > -- > > > > TriLUG mailing list : > > > > http://www.trilug.org/mailman/listinfo/trilug > > > > TriLUG Organizational FAQ : http://trilug.org/faq/ > > > > TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ > > > > TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc > > > > > > > -- > > > TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug > > > TriLUG Organizational FAQ : http://trilug.org/faq/ > > > TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ > > > TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc > > > > > > > > -- > > TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug > > TriLUG Organizational FAQ : http://trilug.org/faq/ > > TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ > > TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc > > > -- > TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug > TriLUG Organizational FAQ : http://trilug.org/faq/ > TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ > TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc > > -- TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug TriLUG Organizational FAQ : http://trilug.org/faq/ TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc
