From: Gabriel Maldonado ()
Date: Apr 30, 2005
Subject:
Re: Scoring
It is possible to play the score events with CsoundAV (both with
OpenGl-based instr and audio instr) but if you uses OpenGL, the
performance must be realtime.
Regarding video files, yes CsoundAV is able to play a video file in AVI
format, assuming that you have the appropriate codec installed in your
Windows machine. Notice that some codecs require less CPU than others
and the compression level also affects CPU. Also notice that an eventual
drop-out (frame lost) in the video file would cause a drop-out in the
audio performance too. I suggest to use a separate hard-disk for the
video file and use a reduced frame size for the video file if your
machine is not fast enough and the video transfer bandwidth is poor.
For the maximum reliability, where it is possible, I suggest to separate
the video and audio into two separate processes with two instances of
CsoundAV. I often use this solution by controlling the two instances
with the same MIDI messages to have them in sync.
Gabriel
Chuckk Hubbard wrote:
> Hi Gabriel.
> So when you say realtime, does that mean it won't play a coded score
> while playing a video file? Because that would be enough. That, and
> the ability to only play certain segments.
>
> As far as actually typing the score, and later merging the video with
> the score, other programs are fine.
>
> -Chuckk
>
> On 4/29/05, Gabriel Maldonado wrote:
>
>>Take into account that the video part of CsoundAV only works in realtime
>>at present time. CsoundAV at present time is intended as a versatile and
>>powerful VJ instrument for live performances.
>>
>>Gabriel
>>
>>Chuckk Hubbard wrote:
>>
>>>Actually I wasn't scoring for film before. I just learned how in
>>>Digital Performer at school, and figured out how in Sonar.
>>>The problem with using Sonar is it doesn't do the kind of microtuning
>>>I want. I'll probably do some standard tuning scoring, probably more
>>>so, but I'm curious as to whether an open-ended just tuning system
>>>could be used with film; Sonar (any sequencer) would be more than
>>>capable of doing a closed microtuning, you just record pitch-bent
>>>samples and assign them to individual keys in an sf2 or whatever
>>>sampler you're using, then compose in piano roll.
>>>
>>>But for non-closed tuning, it has to be possible to enter ratios or
>>>tuning numbers per note. Entering pitch bend numbers in event lists
>>>does work, and I've tried that for stuff other people had already
>>>composed, but it's grueling, and impossible to actually compose with.
>>>
>>>I read up on CsoundAV's GL opcodes last night, and I think it might
>>>have what I'm looking for. It looks like I would have to go back and
>>>forth between CsoundAV and a score editor. That wouldn't be a
>>>problem.
>>>
>>>Anyone know, what's the best way to skip around in CsoundAV? Would I
>>>have to use score statements to start from certain points, or is it
>>>possible to build a transport GUI?
>>>
>>>-Chuckk
>>>
>>>
>>>On 4/28/05, Michael Gogins wrote:
>>>
>>>
>>>>I don't use Blue, but I've looked at it several times and talked about it quite a bit with Steven Yi, its author. Looks to me like a good choice for you -- I think you should give it a try.
>>>>
>>>>The other choice would be to keep using Sonar and export your score as a MIDI file, which csound 5 can render quite well, I think.
>>>>
>>>>But I didn't realize till now that you are scoring for video or film or something. I've never heard of anyone using Csound in sync with moving pictures. It would certainly be nice to be able to do that.
>>>>
>>>>CsoundVST works in Cubase SX 3 which I just upgraded, but performance is not really very good. I'm going to look into that (might have something to do with the GUI, which I could fix). Cubase SX 3 automatically adds an audio level channel to VST instrument channels, which makes it much easier to use CsoundVST since now you can adjust the gain if your orchestra is too loud or too soft. SX 3 has both surround (5.1 anyway) and sync to video. If I can improve the performance, scoring with CsoundVST in SX 3 will be quite attractive -- Csound with surround sound! Other than being a CPU hog, CsoundVST in SX 3 seems to work quite well.
>>>>
>>>>Perhaps you can provide me with more detailed info about the Sonar problems?
>>>>
>>>>-----Original Message-----
>>>>From: Chuckk Hubbard
>>>>Sent: Apr 28, 2005 4:05 AM
>>>>To: Csound List
>>>>Subject: [Csnd] Scoring
>>>>
>>>>Hi. I'm interested in finding ways to score with Csound.
>>>>I have Sonar, which has great scoring abilities, but I haven't yet
>>>>gotten CsoundVST to work in it. I also would like to use non-scale
>>>>based microtonal music, which won't work in Sonar.
>>>>
>>>>So the two programs I am thinking of are CsoundAV and Blue. CsoundAV
>>>>has video input, but will I be able to edit and run a Csound score
>>>>synced with video? I mean, I'll take care of the tempos, but will it
>>>>start both at the same time and stay in time? It wouldn't even have
>>>>to output video, I can render the score separately and merge it with
>>>>video in Sonar.
>>>>
>>>>The other thing I can think of would be to set audible markers for any
>>>>important video events, or even use the audio track from the video,
>>>>and import that soundfile in Blue while composing with the piano roll.
>>>>
>>>>I'm running WinXP. Anyone know any other options?
>>>>
>>>>Thanks.
>>>>-Chuckk
>>>>
>>>>--
>>>>"Some people got attitude,
>>>>Backed up with attitude."
>>>>-G. Love
>>>>-- [EMAIL REMOVED] >>>> (or to http://www.cs.bath.ac.uk/cgi-bin/csound ) [EMAIL REMOVED] >>>>
>>>>
>>>
>>>
>>>
>>--
>>Gabriel Maldonado
>>http://csounds.com/maldonado
>>--
>>-- [EMAIL REMOVED] >> (or to http://www.cs.bath.ac.uk/cgi-bin/csound ) [EMAIL REMOVED] >>
>
>
>
--
Gabriel Maldonado
http://csounds.com/maldonado
--
-- [EMAIL REMOVED] (or to http://www.cs.bath.ac.uk/cgi-bin/csound ) [EMAIL REMOVED]