[QLab] MIDI file playback

[Steven Devino]

Thanks Jeremy.

I think this sounds reasonable. I don't think I want QLAB taking on  
the overhead of being a MIDI (or anything else) sequencer (poor Chris!).

Steve


On Apr 14, 2007, at 10:59 AM, Jeremy Lee wrote:

> You can send MIDI data (MMC, notes, program changes etc) via an IAC  
> or physical MIDI port already.  What you can't do yet is play back  
> a MIDI file and have it go to an external source.  The thing is  
> that Chris has written a MIDI cue that will currently only play  
> individual messages.  The Video cue will playback MIDI files as  
> they are interpreted by Quicktime.  The problem is that Quicktime  
> can only send MIDI to it's internal synth.
>
> So, you could control DP, LIVE, etc from QLab, but just can't  
> properly route a MIDI sequence from QLab...
>
> On Apr 14, 2007, at 10:20 AM, Steven Devino wrote:
>
>> OK but how is it that Pro Tools, DP and Logic can do this? In those
>> apps Quicktime can be used as one of many playback devices.
>> This is a minor issue right now, but I would almost never see using
>> Quicktime as the playback source.
>>
>> What I would like to do is tell an external sequencer to Start,
>> pause, stop etc. Can I already do this? I'd like to be able to
>> operate external devices or computer based devices like sequencer
>> programs etc.
>>
>> Steve
>>
>>
>> On Apr 14, 2007, at 9:30 AM, Christopher Ashworth wrote:
>>
>>>
>>> On Apr 14, 2007, at 9:19 AM, Steven Devino wrote:
>>>
>>>> This whole thread has me confused.
>>>>
>>>> What CAN be sent via MIDI fro m QLAB?
>>>>
>>>> I thought MIDI was MIDI. So any string of MIDI command or MIDI  
>>>> notes
>>>> would be possible, No?
>>>
>>> Yes.
>>>
>>> The limitation discussed here is in reference to directing the  
>>> output
>>> of pre-composed MIDI files played back from a Video Cue (i.e. from
>>> QuickTime).
>>>
>>> Sometimes it would be handy to direct the MIDI notes in a pre-
>>> composed file to an external device.
>>>
>>> Even though the QuickTime reference manual says you can route MIDI
>>> files to an external device in the System Preferences, this is not
>>> true.  A CoreAudio engineer has confirmed that they have "not
>>> supported this feature on Mac OS X".
>>>
>>> Pretty annoying that the manual has been wrong for so long, even
>>> though people keep pointing out that it is wrong, but there it is.
>>>
>>> Therefore, while QLab *can* send any set of MIDI notes or MSC
>>> messages to any external device, it can't yet redirect a MIDI file
>>> (pre-composed music or otherwise) to an external device.
>>>
>>> Christopher
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>
> -- 
> Jeremy Lee
>     Sound Designer, NYC - USA 829
>         http://www.jjlee.com
>
>
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