Suresh Madan Posted April 23, 2013 Report Share Posted April 23, 2013 My configuration is as follows: MB: Asus Rampage IV Extreme CPU: Intel Core i7 - 3930K RAM: 4 x Corsair 4GB Vengeance DDR 1600 MHz SSD (OS): Intel 120 GB SSD 520 Series SSD (Media) : 2 x Intel 120 GB SSD 520 Series setup in RAID O GRFX: AMD FirePro W7000 OS: Win 7 64 Bit I am running 4 outputs at 1920 x 1080 @ 60Hz I am running a single file 3840 x 1080 MP4 (H.264) encoded at 30 Mbps. The file is 30 seconds in duration. First 9 to10 seconds file runs smooth and then image on screen freezes up while timeline continues to run. Pause the timeline will instantly update the displays to the current point in the video. Playing the timeline again from paused point, video will play smooth for 9-10 seconds before image will again freeze up. Looks like the "pipeline" is choking somewhere. the first suspect would be the drive throughput. But running BlackMagic Design Design Disk Speed Utility yields read speeds of around 800 MBps. The Media raid is setup on 6 Gb/s ports 1&2 and disk write back cache is enabled. The OS drive is setup on the 3 Gb/s port 1. Any ideas - what's going on suggestions to resolve ? 0 Quote Link to comment Share on other sites More sharing options...
geogen Posted April 24, 2013 Report Share Posted April 24, 2013 I think the file is too big in its resolution, it will be better to split it as proxy 0 Quote Link to comment Share on other sites More sharing options...
Member paolino Posted April 24, 2013 Member Report Share Posted April 24, 2013 I don't agree with geogen, I have a similar computer ( but with Asus 7970 Direct CUII 6 output graphics card ) and I can play 3 - 4 video 4K. Probably the problem is the compression ( which software do you use ) If you can give me your email I can send you with wetransfer 2 -3 video with similar resolution. These videos work perfectly on my system. Paolo 0 Quote Link to comment Share on other sites More sharing options...
Member paolino Posted April 24, 2013 Member Report Share Posted April 24, 2013 have you optimized the computer with Twealing list? http://dataton.com/forum/topic/18-watchout-version-5-and-windows-7-32-or-64-bit/page__view__findpost__p__1526 0 Quote Link to comment Share on other sites More sharing options...
Suresh Madan Posted April 24, 2013 Author Report Share Posted April 24, 2013 Hi Paulino Yes all tweaks have been followed exactly. Please send files to : dynamixmedia@gmail.com 0 Quote Link to comment Share on other sites More sharing options...
Member matkeane Posted April 25, 2013 Member Report Share Posted April 25, 2013 Apologies for jumping into this thread, but I was wondering whether with WO5 and multiple outputs from the same video card, there is still the same need to split large video files into proxies? I've continued doing this - out of habit as much as anything - but since the files are being read on the same display computer, are stored on the same drive and are being shown by the same graphics card, I wonder whether it's still a necessity unless the files are in a resolution greater than those accepted by the media format. 0 Quote Link to comment Share on other sites More sharing options...
Jonas Dannert Posted April 25, 2013 Report Share Posted April 25, 2013 Please feel free to try, nothing in WATCHOUT stop you from this. BUT, it will place a completely different, more severe load on your computer hardware. It will also only play as one file, instead of as a more distributed load as separate pre-splitted files. As an alternative to a Video Proxy, one can put the separate files in a composition, too. /jonas 0 Quote Link to comment Share on other sites More sharing options...
Moderator jfk Posted April 25, 2013 Moderator Report Share Posted April 25, 2013 ... It will also only play as one file, instead of as a more distributed load as separate pre-splitted files. ... And that seems to be the key, assuming quicktime decoding is not involved, the movie decoders are multi-threaded. How multi-threading is implemented could vary by the codec (decoder). But I do not know how dynamic that multi-threading is, i.e. Does one big clip get more threads to do the work based on its pixel count? Or does multi-threaded really just mean two per movie, or some other ceiling lower than 4 or 6 times for larger pixel counts? With six outputs and a six-core hyper-threaded processor you have 12 threads to play with. If the thread utilization is 'per clip limited', then four or six HD/30p movies could utilize four to six time the processor resources than one aggregate movie - same number of total pixels either way, but total pixel count appears to be secondary to processor utilization in this case. 0 Quote Link to comment Share on other sites More sharing options...
Jonas Dannert Posted April 25, 2013 Report Share Posted April 25, 2013 The file plays OK on my testrig. 2 1920x1080p60 outputs, 1 from each machine: Specs on them: Core i7 2600K 8GB RAM 1 SSD for OS - 220 MBps 2 SSD for WATCHOUT (hardware RAID 0) - 850MBps AMD FirePro V7900, ACTIVE DP->DVI adapters Playing back the file in QuickTime on one machine was cumbersome, though. /jonas 0 Quote Link to comment Share on other sites More sharing options...
Member matkeane Posted April 26, 2013 Member Report Share Posted April 26, 2013 @Jonas, @JFK: I hadn't thought about the decoding being multi-threaded, so I guess I'll keep making pre-split files. Thanks for clearing that up for me. 0 Quote Link to comment Share on other sites More sharing options...
Member paolino Posted April 29, 2013 Member Report Share Posted April 29, 2013 Did you get the link to download the images? 0 Quote Link to comment Share on other sites More sharing options...
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