| Author | Message | ||
     Mart Rating: N/A |
I have the Nvidia FV 5700LE card and am currently experimenting with the TV-Out option. But I have noticed it always ouputs a progressive display even when the original source was interlaced (ie. 3D Field sequential) Is it possible to show Field sequential video via the TV-Out? If so how? Mart | ||
| Anonymous Rating: N/A |
The TV out of the video card outputs in interlace mode. In order to have field sequential you need a progressive output so that each eye has a complete screen. If it's a regular TV (non-prograssive scan) then field sequential viewing is imposible. Now if you do have a progressive scan TV (720p) then you would have to use a VGA to component video dongle, with the required software, plugged into the video card. You would then connect that using component video cables to the component input of your TV. You could try it if you have a 480p TV but the resolution would be too low to truly enjoy it. sorry to be the bearer of bad news. John | ||
| Anonymous Rating: N/A |
I would like to know what "Field sequential " means and what it is. So if someone might be kind and explain this to me I would be grateful. | ||
| Puppet Kite Kid Rating: N/A |
Field sequential basics (In field sequential 3D, one field is the left eye view and the other field is the right eye view, but the basic structure is identical): http://www.lurkertech.com/lg/fields/fields.html I have tried watching field sequential 3D video via the TV-Out (I suppose many of us have), and I can't even remember exactly what I did to get the signal to play field sequentially. It's been a couple of years ago... I think I got it to work with the VLC media player, so I'd try that if you want to experiment. Try "bob" or something... I think the problem was that the shutterglasses cannot be synced. They went in and out of phase. I think it's common knowledge that shutterglasses for a PC with a PC work fine and shutterglasses for field sequential TV used with a field sequential TV work fine (with flicker) but the two don't seem to be cross-compatible. PKK | ||
| Puppet Kite Kid Rating: N/A |
Here's the freeware VLC player: http://www.videolan.org/vlc/ BTW, I bet it's because the refresh rates of a PC are different than the scan rates of an interlaced NTSC TV's. This is more complicated than I know about, but consider that the NTSC frame rate is 29.97fps. To complicate matters, you can watch 29.97fps 3D video on a PC with PC shutterglasses, but the shutterglasses refresh rate will still be something like 85, 100 or 120 Hz. The NTSC interlaced TV is 60Hz. I know I can't get my PC shutterglasses to shutter faster than 100Hz (it won't do 120 Hz), so maybe if you have shutterglasses that can do 120Hz, it will work with the VLC media player and "TV-out". It's worth a try :-) Somebody let us know what happens :-) Also, somebody tell us why this is not working (if it doesn't :-) PKK | ||
| Jesper Rating: N/A |
Hello. Don't know if this is what we're talking about but I managed to use the pageflipping mode through the tv out and used it with my ED's glasses. I only tested it with the Nvidia test page for 3D but it worked, flickerless? not really. | ||
| Peter Wimmer Rating: N/A |
I successfully used the video output of a Matrox Marvel G400 to watch fielddequential video on a TV. | ||
| Mart Rating: N/A |
Thanks for the replies, guys! It looks like "BOB" did the trick and can now get a true FS-3D from my TV-OUT. Thanks, Mart | ||
| Anonymous Rating: N/A |
How is it possible to watch field sequential 3D on a non-progressive scan TV? I'm confused, please enlighten me. John | ||
| Anonymous Rating: N/A |
Matrox G450 will output field sequential using Peter wimmer's stereoscopic player set to monoscopic output with interlaced stereo input. Need to resize stereo video to 720x480 interlaced stereo with NTSC TV-Out and 720x576 interlaced stereo PAL TV-out You don't need to change frame rate of the video as the Matrox G450 will convert frame output for you. | ||
| Mart Rating: N/A |
John, Field sequential is exactly that; Left-eye's Field followed by the right-eye's Field. A prgressive TV would simply show both fields at the same time. So a non-progressive TV is mandatory for Field sequential 3D | ||
| Anonymous Rating: N/A |
A non-progressive scan TV by is by definition an interlaced TV. Meaning that the first pass is on the even lines and the second is on the odd lines. The second pass begins when the first pass is halfway down the screen with the overall refresh rate being 60Hz. Progressive scan will fill each line of resolution on each pass in a progressive manner. In order to have field sequential each frame must be display in its entirety for each eye ie. the first pass goes to the right eye, the second to the left, the third to the right and so on. On an interlaced TV, which is ALL TV's up to about 5 years ago, the nature of the technology would disallow field sequential viewing. Not to mention that TV's only refresh at 60Hz whether in interlaced or progressive mode so the max stereoscopic "refreshrate" would be 30 per eye. BTW computer monitors are progressive scan so the statement "A progressive TV would simply show both fields at the same time." is totally inacurate. John | ||
| Peter Wimmer Rating: N/A |
>On an interlaced TV, which is ALL TV's up to about 5 years ago, the nature of the technology would disallow field sequential viewing. Fieldsequential 3D works ONLY on interlaced TVs. On progressive TVs (including 100 Hz PAL TVs), it does not work! | ||
| Peter Wimmer Rating: N/A |
>Matrox G450 will output field sequential using stereoscopic player set to monoscopic output with interlaced stereo input. In fact, Stereoscopic Player can convert any stereo format at any input resolution to fieldsequential 3D in TV resolution. You just have to select the interlaced viewing method and resize the player video window so that its height is exactly 480 (NTSC) or 576 (PAL) pixel. Using a Matrox card, the output will be a fieldsequential 3D video! The problem is that it is extremly difficult to set the proper window height. Maybe I should add a command to set the size automatically?! | ||
| Mart Rating: N/A |
John, I suggest you read: http://nickyguides.digital-digest.com/interlace.htm As IMO your comments suggest you haven't a clue how Field Sequential 3D video is viewed! However, you seem pretty cocksure about what you say, so have you managed to view FS-3D on a progressive TV? BTW, Progressive TVs scan a full frame (Odd & Even fields) in a single pass. So my statement: " "A progressive TV would simply show both fields at the same time." (i.e. not sequentially) is totallaly accurate!!! Best wishes Mart | ||
| Anonymous Rating: N/A |
I thought odd/even is the display method used for page-flipping. One eye seening the even lines and the other seeing the odd lines like the old 3Dfx cards method of stereoscopic viewing. The difference being, between a TV and monitor, that on a monitor the odd lines don't start displaying until the even lines had finished completely. Effectivly cutting the resolution in half. To answer your questions: "However, you seem pretty cocksure about what you say, so have you managed to view FS-3D on a progressive TV?" Answer: Everyone's computer monitor is progressive scan. Does that count? and: "A progressive TV would simply show both fields at the same time." (i.e. not sequentially) is totallaly accurate!!! Answer: No, each progressive scan of the screen would be show in its entirety for each eye progressively. I think what your displaying on your TV is not progressive scan but page-flipping. My wife is calling me to dinner right now but I have an indepth explanation about the differences between field sequential and page-flipping that I downloaded from the company that used to make the stereoscopic wrappers that I used for my shutter glasses and Voodoo card. I can't remember the company's name right now but I'll find the file for you. John | ||
| Mart Rating: N/A |
John, I never mentioned page flipping, all I originally asked was how to get an interlaced output from the TV-out ofmy graphics card. Though I think I now know where you are coming from. Page flipping could be described as Frame-sequential 3D, i.e. each eye sees a full resolution frame and not a half resolution field as in Field sequential 3D. Mart |
