| Author | Message | ||
     Giorgio Bogoni Rating: N/A |
Seems to me the best way to get an high frame rate playing a side-by-side movie is to play 2 MPEG2 (VOB) files on 2 separate PC (cutting the movie in left and right video streams). The main problem is to get them in sync. I can start the 2 movies exactly in the same time but do you expect 2 identical PC will play 2 video streams in the same time? And after 2 hours will be them still in sync? Is there any way to lock them to the same clock? Any suggestion? Giorgio. | ||
| M.H. Rating: N/A |
Gorgio: You are right. The described way is optimal according speed, data flow distribution, standard graphic card usage. Maybe that it is cheper than one super-power machine wich is able to handle the whole stream. You can use standard mpeg2 decompressors in this way. DVD format (VOB) is not optimal, standard mpeg2 stream without the crazy DVD multiplexing will be sufficient. The sample video players from DirectX8.1 SDK could be easy modified for the simultanous playback synchronization (throug Internet or simple Direct Play (serial cable, paralel cable, net) local connection). For a coding specialist, it is a work for one week or so. I am unfortunately just now overhelmed by a work on comercial projects, I do not have time to do that .... | ||
| Anonymous Rating: N/A |
Get 2 badass DVD playahz wit RS232 plugz in'em dat means dat U can start'em at once via a PC. Standalone DVD playahz ain't az sensitive az PCz 2 timing issuez once they R started at da same millisecond. | ||
| Anonymous Rating: N/A |
Lame sync: If you use the identical DVD player on the PC in the same resolution, just get a USB-split (or whatever mouse connection you use) and use the same mouse to control the PCs at once. Mirror-mouse, twin-mouse, call it what you want. | ||
| Giorgio Bogoni Rating: N/A |
Standalone DVD player may be worth a try (anybody has already tried???), 2 soft DVD players will suck too much resources and they'll not fix graphic board and CPU overload problems. About USB-split ... well, I was thinking about starting the 2 PCs at once with one wireless keyboard but a parallel cable will ensure correct timing after hours. THX, Giorgio. | ||
| M. H. Rating: N/A |
Gorgio: Using 2 standalone DVD player you will not get higet than DVD image resolution and you will get no VGA out. Using 2 PC with 2 softvere decoder you will solve the overload poroblems copletly by reducing this troubles to 1/2. Sinchronization of 2 PC is much more easy than for DVD standalone. In adition, you will be able to use advanced compression algoritms (DiviX 5.0) on PC. | ||
| Anonymous Rating: N/A |
Don't agree with the last opinions, if you get good stand-alone DVD players with the RS232 so that you can control all at once via serial cable you get 100% sync. 2 PC using PowerDVD or whatever can much more easily de-sync when a screensaver/powersaver or random Windows swap file read/write starts working and a million other reasons a PC has for screwing up one simple task. Depending on the projectors, it might be better with 2xPC/2xDVD, if they are optimized for movies or office use, but high-end DVD's offer good RGB out with excellent quality, and low end projectors can't handle more than 800*600 anyway. The simplest way to sync is to use 2xDVD and start them with the same remote, but it's not as good as serial control. It all depends on what equipent you already might have and the needs you have. | ||
| Giorgio Bogoni Rating: N/A |
Michal, you wrote "The sample video players from DirectX8.1 SDK could be easy modified for the simultanous playback synchronization (..)Direct Play (serial cable, parallel cable, net)". Can you give us links to read about this and to learn how to do this? Is all freeware software? Are you sure that all the events listed in the previous post cannot de-sync this cable-synchronization? THX, Giorgio. | ||
| M.H. Rating: N/A |
DirectX 8.1 SDK is availabe for free download from Microsoft WWW. The link is: http://msdn.microsoft.com/downloads/?url=/downloads/sample.asp?url=/MSDN-FILES/027/001/771/msdncompositedoc.xml&frame=true The complete documentation is inside (with a lot of samples for both Direct Play synchronization and several sorts of Movie Players). Microsoft Visual C++ 6.0 is nessesery for recompilation and deveopment. Evrything is free. You have frame-precise contol on the movies playback - you can sync what you want to what you want. According format - throu direct show technology evrything si supported. By the help of third-party mpeg2 decompressors (they are not free) mpeg2 is supported as well ... | ||
| Giorgio Bogoni Rating: N/A |
THX, I'll give a look but I need someone more skilled in programming. Giorgio. | ||
| Giorgio Bogoni Rating: N/A |
:-( 165 Mb cannot be downloaded with a modem dial-up connection! And so I cannot even get information files about how this stuff works! (why MS doesn't let us download TXT, DOC and PDF files before trying to download the whole SDK???) :-( Giorgio. | ||
| John Billingham Rating: N/A |
They CAN because they ARE MS!!!!!!! John | ||
| Anonymous Rating: N/A |
I can help bu downloading and ripping out only what you need, do you know what you want or should I send you a file listing first? Got an email adress with a 1-2mb file limit? | ||
| Giorgio Bogoni Rating: N/A |
THX Anonymous, I really don't know what's inside the zipped file. I expect some code and some files that explain how to use it. If you can send me only TXT, DOC and PDF files I'll read them and I'll try to find someone that can use the attached code. If I'll find someone I'll even find a way to download the whole zipped file. No problem to receive 1-2 Mb at my e-mail adress. If you want I can share these files on 3DTV yahoo-gruop. Thanks again, Giorgio. |
