intel iMac QT problems with MIDI playback

Hopefully, the WWDC will lead to better software for the Mac, not only from 3rd parties but from Apple itself. The announcement of new computers with faster chips would help but after all these years it is astounding that QuickTime still can't playback MIDI files that are above a certain level of complexity - mainly with pedal, sustain and rapid note events that pile up in the QT synthesizer and overload it until it just stops. This has been endlessly discussed here, at Mac Music and elsewhere. But, Apple has still not made QT a better product in this regard. Or is the problem that the processing power of the Mac still is not up to the PC?
The only way to make pro music on a Mac is with an intel Mac Pro that has a pro soundcard and sufficient memory and shell out the cash for a high-end software program like Finale, Sibelius or Logic Pro or to use a lower end intel Mac with external USB playback hardware. Sad, but true, that Windows software and low-end and lower cost PC's give the user the capacity to create and playback pro music and do it much better than low-end Macs. I know, I tried it. A G4 PPC eMac or G5 iMac (and the laptops) are good for lightweight MIDI and it handles MP3 fine - the same is true for low-end intel Macs. I just wish I'd known all this about Macs and music before I shelled out for one of the first intel iMacs - live and learn.

But download these .zip MIDI files (virus scanned OK but please always scan downloaded files if you need to) and try to play them with your Mac and truthfully post your results here. Preferably, if you use both Mac and PCs - give it a try and see what happens. They playback fine on any PC with a reasonable amount of processor power, most sound synths (including QT that has been set in preferences to General MIDI and to the PC sound card or other synth instead of Quick Time synth) a good soundcard, or even onboard audio that has enough processor and memory to handle it. At the CSMA archives, the last time this was posted, every user had a different story - those who were honest said the files stopped playing with QT on Macs.

This is not a free ad for my non-commercial website. But, since it is a free site, if I just put up the remote links to the files, you will get directed to an ad page for the server. So go to the home page

http://lamplightmus.topcities.com/

and page down to the downloads listed under Jazz and Blues MIDI files

left click on the links to

Pennies from Heaven (piano solo)
Stomp (Live Piano Improvisation)

or page down further to classical music MIDI

Echoes Return, Symphony No. 1 (orchestra), 2nd movement


Any of these files will demonstrate the problem.



I've been to Apple stores and resellers and tried these files out on all the Macs and without a pro sound card you get the same results - QT was not made for MIDI, at least not pro MIDI. It appears that QT is designed for the average user and more for video and MP3/4 than advanced MIDI. So, since I found some new software that I'd like to try that only runs on PC, I'm back on my PC laptop at least for part of the time. In Apple's favor, the new intel Macs are great improvements in processing power and speed over older PPC machines and there is no doubt that many, myself included, prefer Mac for video, photos and graphics work. It does all the basic productivity software fine as well - my big beef with Apple and Macs is the lack of low-end support for high-end MIDI and music work. You have to pay the bucks for Mac Pro and a lot of new hardware and software if you want to get it right. Unfortunately, for the time being, with Windows and PC you can do it a lot cheaper.

iMac intel core duo 20", Mac OS X (10.4.9)

Posted on May 2, 2007 2:45 PM

Reply
11 replies

May 2, 2007 5:40 PM in response to hooterville

All the MIDI's played fine for me using QuickTime™ Version 7.1.5, Player Version 7.1.5

"Echoes Return, Symphony No. 1 (orchestra), 2nd movement" is MP3 and when I downloaded it opened iTunes version 7.1.1 it played fine, even saved to iTune Library.

1. Are your QT and iTunes up to date?
2. How much Ram does your 20" have and what other App's are you running at the same time as QT?
3. Are you having any other issues with your iMac not operating properly?

Keep an open mine there are many folks here that can and will help!

17" iMac Intel Core Duo 1.5GB Ram Mac OS X (10.4.9) Maxtor 300GB FireWire Creative Inspire 2.1 2G Nano

May 2, 2007 7:33 PM in response to hooterville

I tested some of the MIDI you listed there, the first piano one indeed have trouble within quicktime, but there are no noticeable problem with the Symphony one. I think you are confusing QT's software synth's performance with OS X's audio MIDI performance.

You are most likely right that QT's soft synth are just designed for consumer usage, but the MIDI/audio back-end of OS X is quite good compare to that in Windows. With iMac's onboard sound card I have no noticeable latency or performance problem with Logic or Reason on OS X, but on Windows side with bootcamp, Cubase or Reason still have quite a bit latency (40ms) without a pro ASIO sound card.

On the other hand pro digital audio these days rarely runs on the synth on your built-in soundcard any more. Logic / Garage band doesn't use QT soft synth and they works great from a low-mid end Mac. For basic MIDI sequencing and playback Mac Pro would be an overkill. My only gripe would be Garage band's abysmal support for MIDI, forces you to get at least logic express, but then again you pay for software on windows too.

May 3, 2007 7:54 AM in response to den.thed

Thanks - I'm enough of a techie to know where the problem is - everything is up to date, I have maximum memory and this problem has existed from day one with the machine and software.

You went too far down the page past the MIDI files to the MP3 files which all play fine. There are MIDI and MP3 versions with the same titles. Perhaps I will update the page and have the MIDI and MP3 links clearly marked next to each other on the same line.

The main reason I'd like QuickTime to play all the MIDI is because so many people that visit web pages use QT and if they try to play a file and it stops then unfortunately it reflects badly on the page or the file not the software.

May 8, 2007 12:20 PM in response to hooterville

Well on my G5 and Mac Book Pro with the QuickTime Pro the files on the web site play good with these third party common QuickTime (between my two Macs) plugins:

1. Perian component
2. Flip4Mac WMV components

So I think you might have a plugin that is screwing with your MIDI playback. You might want to look at your log error and system log (/Applications/Utilties). Good Luck.

May 10, 2007 8:25 AM in response to TopoTone

Thanks for the reality check - seems that some of the older Macs (I've got a G4 eMac) are doing a better job than some of the newer versions. It still has the MIDI playback problems with PC MIDI but it records and plays back well using 3rd party software. My iMac intel wouldn't even connect with the MIDI interfaces I had - driver problems. But the main problem I've had is getting the older PC produced MIDI to playback on Mac using QT.

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intel iMac QT problems with MIDI playback

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