| Author | Message | ||
     Robert Blouin Rating: N/A |
I recently built a dual camera rig for two 16mm movie cameras and would like eventually to project a 3-D movie to a large audience. I could do it with two film projectors, but would so like to finish it in video. Question: should I film in 30 frames per second if I decide to finish in video and project it using two polarized video projectors, or will 24 frames per second when both are transferred to video, ruin the syncing of the 2 images? One more question: video transfers from film: if I were to get a High Definition video transfer, would this be impossible to synchronize and project through video? Also, since I'm about to invest in a new custom computer system mainly for this purpose, what polarizing methods and hardware will give me the highest resolution? (ie: the mother of all questions?) Robert ps: also, since I am new to this discussion, I must say my stereo knowledge is geared less toward gaming and more toward film and photography, and if I can be of any help therein to anyone, let me know. | ||
| gerrard Rating: N/A |
I presume you live in an area where NTSC is the television standard (eg USA, Japan)? NTSC has 60 (actually 59.94) fields per second. Therefore to transfer film to NTSC video the following method is employed. quote from http://www.cs.tut.fi/~leopold/Ld/FilmToVideo/ "We take a film frame, and show it for 3 NTSC fields, i.e. 3/60s. Then we take the next film frame, and show it for 2 NTSC fields, i.e. 2/60s. The total time for the original film should be 2/24s = 1/12s, which is exactly the same it took for NTSC to show the same frames (3/30s+2/60s = 5/60s = 1/12s). Now we just continue repeating the pattern. " To ensure a perfect transfer every frame in the two films would have to be transfered in exactly the same 3 field / 2 field pattern. In my opinion PAL video is better for film transfer as it has a slightly higher resolution than NTSC and runs at 25fps. Films transfered to PAL video are speeded up to 25fps a 4% increase in speed. This makes movies last 2m24s less for every hour of the original film. The slight increase in speed is said to unoticable by the majority of people. I'll leave the "what speed should I film at?" to you but I hope the above info will help. I suggest you take a look at this website http://info.curtin.edu.au:8080/~iwoodsa/stereoscopic/committe/index.html It includes lots of info on stereoscopic displays Regards Gerrard | ||
| gb Rating: N/A |
Take a look at the following website: http://www.sledgeham.com/3dfilm/ It discusses many Film/TV 3D topics, the '3D Forum' can be a useful place to ask questions. |
