Re: Clarification about [pd~]
Miller Puckette via Pd-list <[email protected]>
| Newsgroups | gmane.comp.multimedia.puredata.general |
|---|---|
| Message-ID | <[email protected]> |
There are two possible sources of dropouts because of gem: first, gem might run at less that 100% CPU usage but since itits calculations happen only once per frame, the computation time is irregular and can be smoothed out by using pd~ with a long-ish fifo size. This allows the sub-process to get behind on computation and later catch up as the fifos run out and refill. Second, it could be that the gem patch sometimes runs at greater than 100%. In this case you can either allow it to get behind (I think this will not just slow down the frame rate but also slow down pd's clock so that sequences might also slow down) -- or else you can slow gem's frame rate down until the computations fit -- and then you can go back to case 1. cheers Miller > > Hi, List ! > > I stumbled over one question recently, regarding [pd~]. > > PD (with Audio operations) and PD with video (GEM) are best run in 2 > seperate instances of PD, right ? (As video operations can cause audio > dropouts) > > So, given these informations about [pd~], running a GEM patch inside > an audio PD patch using [pd~) is not going to be better than having > audio and video in the same patch, right ? (because [pd~] is > synchronous to its parent) > > So, for an "asynchronous" situation, i still need to start two > seperate instances of PD to keep audio and video truly seperated ? > > Thanks for clarifications ! > > Best > > Oliver > > --- > [email protected] - the Pure Data mailinglist > https://urldefense.com/v3/__https://lists.iem.at/hyperkitty/list/[email protected]/message/EU5IZC5XZPVDNWQWGGWNYUVDGNCYFNSF/__;!!Mih3wA!GipjXBw7z7iOasCnFnRbhPoGE68mlnFdM3itl3v4PPiX2P6AhUU9xdULG7aSAQrM93z-LBWfQB0y$ > > To unsubscribe send an email to [email protected] mailing list > UNSUBSCRIBE and account-management -> > https://urldefense.com/v3/__https://lists.iem.at/__;!!Mih3wA!GipjXBw7z7iOasCnFnRbhPoGE68mlnFdM3itl3v4PPiX2P6AhUU9xdULG7aSAQrM93z-LMkXSVPw$ > --- [email protected] - the Pure Data mailinglist https://lists.iem.at/hyperkitty/list/[email protected]/message/X2TCPPHHPKGV3CG5L27AQLEXT6HTESI4/ To unsubscribe send an email to [email protected] mailing list UNSUBSCRIBE and account-management -> https://lists.iem.at/