Thanks Iohannes<br><br>So, i can conclude that the slaves local frame clocks are taken from the "local" gemhead objects, as explained in Matteo's answer ? Is it more reliable/light than using a metro on each computer (which would allow me to change the playback speed) ???<br>
<br>Also, for the codecs, no, i don't have raid system. And it's mostly laptops with slow drives. But i'm not sure to have some spare cpu to treat a compressed video codec.<br><br><br><br><br><div class="gmail_quote">
2010/1/28 IOhannes m zmoelnig <span dir="ltr"><<a href="mailto:zmoelnig@iem.at">zmoelnig@iem.at</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
changed the subject back to the original mail...<br>
<br>
Marco Donnarumma wrote:<br>
> Yep, I can confirm the same. I worked with three macs connected via LAN and<br>
> a simple sync via a master works very well.<br>
<br>
this will usually give you quite a lot of jitter, since the "now" in Pd<br>
drifts in the audio-buffer (network jitter is probably neglectable in a<br>
LAN, but of course you also have that), which most likely will lead to<br>
not so smooth playback.<br>
of course it depends on the material you want to play back.<br>
<br>
the solution we came up with, was to have a master frame clock and local<br>
frame clocks on the slaves.<br>
the slaves would adjust their framerates in order to keep up with the<br>
master, if the lag between the master clock and the slave clocks was low<br>
(some frames).<br>
if the lag was too big, the slaves would "jump" to the target value.<br>
<br>
this worked well with several "full size" (cannot remember the actual<br>
resolution) videos played back in sync with live and taped music over 90<br>
minutes or so.<br>
<br>
> Also, maybe someone could disagree, but in my experience not-compressed<br>
> movies (even full DV) are lighter for the machine.<br>
<br>
uncompressed video is lighter for the CPU, but more load for the<br>
harddisk. the "best" codec always depends on your system (e.g. do you<br>
have a fast RAID-system?)<br>
<br>
fgmasdr<br>
<font color="#888888">IOhannes<br>
</font></blockquote></div><br><br clear="all"><br>-- <br><a href="http://www.myspace.com/nicotep">http://www.myspace.com/nicotep</a><br><a href="http://www.bedroomresearch.com/TEP">www.bedroomresearch.com/TEP</a><br><a href="http://nicotep.free.fr">http://nicotep.free.fr</a><br>