fdoeve Posted February 27, 2014 Report Share Posted February 27, 2014 Hi guys! I have been experiencing a strange but SERIOUS synchronisation problem this week... The situation: 2 display pc's, both driving 2 screens, so 4 total, all next to eachother. Each screen runs at 1920x1080, so total of 7680x1080 pixels. Each PC uses an HDMI and a DVI output, both sent to the screens via HDMI to CAT6 converters I had to run 2 videos alternating, first one 15 seconds, videoproxy and the second one 2 minutes, also a videoproxy. Both videos were MP4 videos, 30fps. to make things easy, i put both videos in a composition and put the composition on the main timeline, set to loop and free run. Starting up, everything looks ok, but after about 15 minutes, the 2 display pc's are almost a whole second out of sync! Is there some rule against videoproxys in compositions? Because after putting the videos on the main timeline and placing a play control cue to loop it back to 0:00 everything seemed to be in order... the 2 machines are shuttle computers, Intel Core i7 3 Gig processor with SX58 motherboard specs: http://dropbox.rend.tv/SPECS/Shuttle%20Specs.htm heres a video of what we saw after about 15 minutes. the first of the 4 screens isnt in the video, but you can clearly see the sync difference between the 2 pc's... http://dropbox.rend.tv/SPECS/VID-20140225-WA0000.mp4 Oh and we're running the latest version of Watchout I really hope someone can tell me anything about this problem, because it took me way too long how to get it to run as intended, since i did not know i was doing anything i shouldnt.... Thanx in advance guys! Frank Doeve R&D Communications BV The Netherlands Quote Link to comment Share on other sites More sharing options...
Jonas Dannert Posted February 27, 2014 Report Share Posted February 27, 2014 And if you remove the Cat5-extenders from the equation? (would be our first test, if you supply us a show with content to check, at support@dataton.com) /jonas Quote Link to comment Share on other sites More sharing options...
fdoeve Posted February 27, 2014 Author Report Share Posted February 27, 2014 Haven't been able to do this yet... Show was running at Mobile World Congress... But as soon as i get my stuff back i'm going to try! Thanx for the quick reply! Quote Link to comment Share on other sites More sharing options...
Dataton Partner RBeddig Posted February 28, 2014 Dataton Partner Report Share Posted February 28, 2014 " i put both videos in a composition and put the composition on the main timeline, set to loop and free run." I would look at this point. free-running means that WATCHOUT triggers the clips in sync but then does not care about synchronity of those clips anymore. Computers can run at different speeds even if you think that they are identical and if WATCHOUT does not check synchronity anymore after the start of a video.... Quote Link to comment Share on other sites More sharing options...
fdoeve Posted March 3, 2014 Author Report Share Posted March 3, 2014 well that's not very nice of Watchout... LOL But that does indeed sound like a very plausible explanation... definitely going to look into that one when i have the setup here. THANX! Quote Link to comment Share on other sites More sharing options...
Jonas Dannert Posted March 3, 2014 Report Share Posted March 3, 2014 Hi Frank, Can you supply us with this show, incl. content, to check, at support@dataton.com? /jonas Quote Link to comment Share on other sites More sharing options...
fdoeve Posted March 3, 2014 Author Report Share Posted March 3, 2014 Hi Frank, Can you supply us with this show, incl. content, to check, at support@dataton.com? /jonas Hi Jonas! Definately will, truck should be back from Barcelona tomorrow, so i will get the files to you as soon as i can! thanx! Quote Link to comment Share on other sites More sharing options...
Jonas Dannert Posted March 3, 2014 Report Share Posted March 3, 2014 Thanks! /jonas Quote Link to comment Share on other sites More sharing options...
Dataton Partner Walter Posted March 3, 2014 Dataton Partner Report Share Posted March 3, 2014 Rbeddig's story sound familiar. Frank, I would never use your chosen solution for such a project using to display pc's (just a running loop in an aux). But last week I noticed exactly the same between production PC and display PC. Just had one movie in free run on one display running during setup / rehearsal. After 30 minutes there was a gap of at least 2 seconds between preview on stage area and the actual running display PC. Incredible difference after such short time. Quote Link to comment Share on other sites More sharing options...
Jonas Dannert Posted March 3, 2014 Report Share Posted March 3, 2014 Walter: Between Stage and DisplayPC output is not strange at all to have a difference over time. Stage playback has no priority vs DisplayPC playback, and has never had. This is not the same issue as described, difference between DisplayPC outputs over time, as I see it. /jonas Quote Link to comment Share on other sites More sharing options...
Mike Fahl Posted March 4, 2014 Report Share Posted March 4, 2014 free-running means that WATCHOUT triggers the clips in sync but then does not care about synchronity of those clips anymore. Computers can run at different speeds even if you think that they are identical and if WATCHOUT does not check synchronity anymore after the start of a video. The above is statement incorrect. WATCHOUT maintains sync across computers even when videos run as "free running". They're still synchronized. The term "free running" here merely means they will not pause when the enclosing timeline is paused. Mike Quote Link to comment Share on other sites More sharing options...
fdoeve Posted March 5, 2014 Author Report Share Posted March 5, 2014 The above is statement incorrect. WATCHOUT maintains sync across computers even when videos run as "free running". They're still synchronized. The term "free running" here merely means they will not pause when the enclosing timeline is paused. Mike hmmm well there's that explanation out the window then... :-) the search continues... Quote Link to comment Share on other sites More sharing options...
fdoeve Posted March 5, 2014 Author Report Share Posted March 5, 2014 I have my equipment back and am ready to had you guys the show we were having problems with in Barcelona. Would you prefer a WeTransfer link or Dropbox? or i could put in on my own server for you to download, but that will take you a longggg time, because my upload speed here is next to nothing at the momoent... Also, i should say i was misinformed earlier about the amount of time it took for the show to get out of sync... wasnt a really short time, but about 6 hours... but still, a difference of at least one second in 6 hours is a lot i think. But let me know how you would prefer me to supply you with the show. Quote Link to comment Share on other sites More sharing options...
Mike Fahl Posted March 8, 2014 Report Share Posted March 8, 2014 Send and email to support@dataton.se, asking them for FTP upload access. Mike Quote Link to comment Share on other sites More sharing options...
Jonas Dannert Posted March 8, 2014 Report Share Posted March 8, 2014 Mike, We already have the Show. /jonas Quote Link to comment Share on other sites More sharing options...
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