Quicktime - Revision history

Craig: /* Converting MIDI into MP3 files */

2020-01-30T00:47:28Z

Converting MIDI into MP3 files

← Older revision		Revision as of 00:47, 30 January 2020
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	where "-Ow" means create a WAVE file. This is then passed to lame, and "-b 64" will create a 64 kbit/sec/chnanel MP3 file.		where "-Ow" means create a WAVE file. This is then passed to lame, and "-b 64" will create a 64 kbit/sec/chnanel MP3 file.


			Once timidity and lame are installed, you can use the following script to convert MIDI files to MP3 files without needing to remember the command options:

			<pre>
			#!/usr/bin/perl
			use strict;
			chomp (my $timidity = `which timidity`);
			chomp (my $lame = `which lame`);
			die "Cannot find timidity command\n" if $timidity =~ /^\s*$/;
			die "Cannot find lame command\n" if $lame =~ /^\s*$/;
			foreach my $file (@ARGV) {
			my $base = $file;
			$base =~ s/\.midi?$//i;
			next if $base eq $file;
			print "Converting $file...\n";
			my $result = `timidity $file -Ow -o - 2> /dev/null \| $lame - -b 64 $base.mp3 2> /dev/null`;
			}
			</pre>

			For example, save to "/usr/local/bin/midi2mp3" and set the permissions:

			chmod 0755 /usr/local/bin/midi2mp3

			and then to convert a MIDI file:

			midi2mp3 file.mid

			To convert all MIDI files in a directory:

			midi2mp3 *.mid

Craig at 00:31, 30 January 2020

2020-01-30T00:31:03Z

← Older revision		Revision as of 00:31, 30 January 2020
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	[[Image:Twinkletwinkle.png]]		[[Image:Twinkletwinkle.png]]


			== Converting MIDI into MP3 files ==

			Alternatively, you can convert MIDI files to MP3 files for easier playback of the MIDI files in a audio player. One way is to use [https://sourceforge.net/projects/timidity timidity] to convert the MIDI file to audio, such as a WAVE file, and then use [https://lame.sourceforge.io/ lame] to convert the WAVE file to an MP3.

			To do this in MacOS, install [https://brew.sh Homebrew], and then install these two packages:

			brew install timidity lame

			Then to convert a MIDI file into an MP3, run the command:

			timidity file.mid -Ow - \| lame - -b 64 file.mp3

			where "-Ow" means create a WAVE file. This is then passed to lame, and "-b 64" will create a 64 kbit/sec/chnanel MP3 file.

Craig at 22:48, 29 January 2018

2018-01-29T22:48:55Z

← Older revision		Revision as of 22:48, 29 January 2018
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	can click on the play button to listen to the file:		can click on the play button to listen to the file:

	[[Image:~~twinkletwinkle~~.png]]		[[Image:Twinkletwinkle.png]]

Craig at 22:46, 29 January 2018

2018-01-29T22:46:02Z

← Older revision		Revision as of 22:46, 29 January 2018
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	If your MIDI file is correct a playing console should appear and you		If your MIDI file is correct a playing console should appear and you
	can click on the play button to listen to the file.		can click on the play button to listen to the file:

			[[Image:twinkletwinkle.png]]

Craig at 22:41, 29 January 2018

2018-01-29T22:41:17Z

← Older revision		Revision as of 22:41, 29 January 2018
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	configuration for your computer:		configuration for your computer:
	http://support.apple.com/downloads/#quicktime		http://support.apple.com/downloads/#quicktime
			or
			https://support.apple.com/kb/dl923?locale=en_US

	(2) After installing QT Player 7 from the .dmg download file, you will		(2) After installing QT Player 7 from the .dmg download file, you will

Craig: Created page with " Playing MIDI files in recent versions of OS X is complicated... Here are instructions for getting everything set up. The main problem is that QuickTime Player 10 (and later)..."

2016-01-26T00:36:40Z

Created page with " Playing MIDI files in recent versions of OS X is complicated... Here are instructions for getting everything set up. The main problem is that QuickTime Player 10 (and later)..."

New page

Playing MIDI files in recent versions of OS X is
complicated... Here are instructions for getting everything set up.

The main problem is that QuickTime Player 10 (and later) which comes with OS X
Mavericks (and later; or version 9 or even perhaps version 8) does not play MIDI
files. Any MIDI file you give it will cause the QT Player to choke,
both correctly formed MIDI files as well as MIDI files with errors in
them.

To solve the problem, you must installed QuickTime Player 7 and then
associate QT Player 7 with MIDI files. Here are the installation
steps:

(1) Download QT Player 7 from this website, choosing the correct
configuration for your computer:
http://support.apple.com/downloads/#quicktime

(2) After installing QT Player 7 from the .dmg download file, you will
need to associate MIDI files with QuickTime 7 rather than v10. To do
this is a long involved process:

(2a) Go to the File Browser and select a MIDI file.

(2b) Then type command-i to open up information about the file.

(2c) For the "Open with..." field in the window that comes up, select
"Other..." and choose /Applications/Utilities/QuickTime Player 7.app

(2d) Click the box "Always Open With".

(2e) Press Add.

(2f) Press the "Change All..." button in the command-i window.

(2g) And then press "Continue" to finally associate QuickTime Player
7.app with MIDI files.

Now you should be able to open MIDI files in QT Player 7 by either of
these two methods:

(1) Double click on them in the file browser.
(2) In the terminal, you can type
open file.mid
where "file.mid" is the name of the file you want to listen to.

If there is a syntax error in your compiled MIDI file, QT Player 7
will display the unhelpful error message:
"The movie could not be opened. The operation couldn't be
completed. (OSStatus error -208.)"

If your MIDI file is correct a playing console should appear and you
can click on the play button to listen to the file.