By Boris BlankPosted Wednesday 14th May 2008 14:48 GMT
Given that it's impossible to perfectly interpolate video, how can this ever look anything other than horrible?
Smoother movement is easy: somebody tell the friggin TV companies to stop filmising video and at least broadcast at the 50/60Hz rates we have available.
"The potential flaw is that some folk already complain that 120Hz TVs produce movement that's too smooth, it seeems unnatural."
Now it all makes sense! i know a couple of people with large Samsung TV's and i keep thinking to myself that the way people move on screen just looks strange? I assume those sets are 120Hz!
I understood that the problem with 100Hz (horrible) refresh was that it cause problems with the frequency of the little movements the eyes make when following things. Hopefully 240Hz would be beyond this.
By John LawtonPosted Wednesday 14th May 2008 15:58 GMT
You aren't increasing the transmitted frame rate at all. All you can do therefore is convert the interlaced (as transmitted) frame to non-interlaced, and do some interpolation. Most SD digital TV still looks crap to my eyes due to all the processing artifacts. Make the most of analogue TV while you've still got it!
By Anonymous CowardPosted Wednesday 14th May 2008 16:05 GMT
It would be FAR more useful if the broadcasters upped their data rates rather than compressing the image so much that it's impossible to reconstruct it to create a half-decent image!
Then again, if they did that, where would they find the bandwidth for Buy-Shite TV, and Gamble-Shite TV, and Inane-Soap-Shite TV and....
By Andy BrightPosted Wednesday 14th May 2008 16:45 GMT
Not sure about TV, and as for "too smooth" the human eye can't actually see animation that fast - so it would appear to us as if the whole thing was sped up and I imagine that would look odd.
But it wouldn't take much to fix either.
The real potential I see from these screens are for PC/Console video games, particularly first person shooters. It would fix the tearing problem video cards produce, because currently flat panel monitors can only support 60 FPS. Anything faster and the image is corrupted (torn), hence the vertical sync (vsync) setting that forces the game to cap at 60 FPS.
Oh great, another 'our number is bigger than yours' race... #
By AsocesPosted Wednesday 14th May 2008 16:58 GMT
Everyone knows that big numbers impress the sheep and make them want to buy new stuff. Personally, I'm not buying a new TV until they come out with a 1GHz model.
There are so many other things wrong with digital video, I wouldn't be focusing on how many more times faster the TVs refresh rate is than the source signal.
Q: What do you get when you interpolate frames in between 2 frames of video that contain a lot of motion-blur?
By Ross FlemingPosted Wednesday 14th May 2008 17:09 GMT
But it's either going to try and fill in the missing 3 (at best) frames if we're talking about any playback today (i.e. DVD, BD, DVB-T etc).
I just realised yesterday when watching a DVD on my PS3 with a 60HZ TV, it seems that when you watch it frame-by-frame, it only updates the picture every second frame - so rather pointless!
However, it goes back to the aliasing argument. Most TV broadcasts are aliased to introduce forced motion-blur. But the sharper the images (as is becoming the trend with HD), the more noticable the transition between frames - this is rather evident in an HD panning shot, you can start to see it becoming jerky.
By Henry CobbPosted Wednesday 14th May 2008 18:54 GMT
Place a date certain to eliminate television and just go with web.
Then content providers can deliver with whatever bandwidth they can sue the cable companies to accept.
Also assume that everything will be pirated and change the advertising ratio. Instead of delivering 6 minutes of ads for each 30 minute slot, put product placement in every frame and sell 30 minutes of ads for each 30 minute program.
Too right. The last CRT I had took up half my desk, weighed about 70 lb and could do 120Hz at 1024x768. It was a gem for online FPS games. I still mourn it sometimes when I play HL2 on my current LCD.
Have you seen a BD (or HD-DVD while it lasted) movie on a decent Hi-Def screen at 1080p24?
It certainly doesn't ruin film and it locks the refresh to 24 fps, same as the source material. Motion looks just as intended. This is only for DVDs and Broadcast feeds as all the decent screens handle the settings appropriately. It's one of the things I've really enjoyed with BDs. 2001 looks spectacular.
By Anonymous CowardPosted Thursday 15th May 2008 12:28 GMT
"Now it all makes sense! i know a couple of people with large Samsung TV's and i keep thinking to myself that the way people move on screen just looks strange? I assume those sets are 120Hz!"
No, I think you will find that is the Supermarionation effect.
The 120Hz is used best in the US where its the lowest common multiple of 24 (film) and 60 (broadcast). A 60Hz TV does some nasty stuff called 3:2 pull-down on 24fps source. At 120Hz, it can show the same frame 5 times (or do some stupid SmoothMotionFlowMakeUpRandomFrames9000 processing) for 24fps or show the same frame twice for 60fps. According to the Wikipedia, 24fps movies in europe are broadcast at 25fps.
The annoying thing is, my PC doesn't depend on the frequency of the electricity supply, so why does modern TV have to?
And no more filmising! Sort out the lighting, optics and colour correction the same way film makers have to. Casualty used to be burn your eyes bright, now it's not just too dark, it's too blue! But to me, the main impact 24fps has on film is the techniques cinematographers have to use to work around the limitations of the low frame rate.
By Anonymous CowardPosted Thursday 15th May 2008 14:41 GMT
'Shutter' glassess not polorised they alternate on off (black clear) @ 240Hz means 120 frames viewed per second per eye. Question is will the glassess cope? No tv does polorised images this is special two projector job only. ie theme park only.
Is there a type of shutter glass that's not LCD then?
I may be wrong here, but when they are clear you're looking through a piece of polaroid, when black the LCD is polarised against the polaroid layer and so you can't see through it...
Similarly the TV will have a polaroid layer, so the light coming from an LCD TV will be polarised, if that happens to be against the glass then you can't see whether on or off.
Maybe it's not a problem if both lenses are polarised the same way?
I'm happy to be proven wrong, I'd love to be able to use my shutter glasses again...
Has anyone else thought of the extra power this thing is going to pull? If it needs to interpolate and create three new frames for every transmitted frame, then it's interpolating and creating at least 72 frames per second. That's likely going to take a good amount of processing, thus a good amount of power draw. I'm no "greeny", but I certainly don't want to increase my electric bill using a TV that will (in all likelihood) actually look worse than its predecessor.
By Anonymous from MarsPosted Saturday 17th May 2008 03:12 GMT
I call shenanigans. If something's running at 60 FPS, and it's doing some fancy transitional effects between frames to increase it to 240 FPS, that means it has to load the next frame before showing it, and then give us three useless frames.
What is all this nonsense about reducing motion blurring on LCD displays by playing about with the drive signal? LCD displays are simply incapable of displaying smooth motion video due to their rubbish refresh rates, irrespective of what drive you apply. A standard CRT TV displays sharper fast motion video than any current HD display LCD TV on the market. The answer is, therefore, that if you want to rid yourself of motion blurring, buy a CRT TV (you'll have to hurry though because there aren't many left). OLED displays might be the answer when they can make them last more than a couple of years.
Comments on: Samsung to demo next-gen, 240Hz LCD TV tech
Great, even more motion artefacts #
By Boris Blank Posted Wednesday 14th May 2008 14:48 GMT
Hullaballoo #
By Ashley Pomeroy Posted Wednesday 14th May 2008 14:55 GMT
Thought it was just me! #
By MrM Posted Wednesday 14th May 2008 14:58 GMT
A compromise #
By Marvin the Martian Posted Wednesday 14th May 2008 15:03 GMT
Once we have 240fps source material it'll be great! #
By Mad Hacker Posted Wednesday 14th May 2008 15:45 GMT
100 Hz #
By Jess Posted Wednesday 14th May 2008 15:55 GMT
But.... #
By John Lawton Posted Wednesday 14th May 2008 15:58 GMT
What a waste #
By Anonymous Coward Posted Wednesday 14th May 2008 16:05 GMT
For my computer? #
By Nexox Enigma Posted Wednesday 14th May 2008 16:23 GMT
Games! #
By Andy Bright Posted Wednesday 14th May 2008 16:45 GMT
Oh great, another 'our number is bigger than yours' race... #
By Asoces Posted Wednesday 14th May 2008 16:58 GMT
and the ruination of film continues #
By Brad Posted Wednesday 14th May 2008 17:09 GMT
All well and good when the source catches up #
By Ross Fleming Posted Wednesday 14th May 2008 17:09 GMT
Kill television #
By Henry Cobb Posted Wednesday 14th May 2008 18:54 GMT
Too real? WTF? #
By Anonymous Coward Posted Wednesday 14th May 2008 21:12 GMT
@Asoces #
By Ishkandar Posted Wednesday 14th May 2008 21:52 GMT
@Andy Bright #
By E Posted Thursday 15th May 2008 02:28 GMT
@Brad #
By Stephen Posted Thursday 15th May 2008 03:37 GMT
@Ishkandar #
By André Marques Posted Thursday 15th May 2008 07:40 GMT
Samsung TV's #
By JonB Posted Thursday 15th May 2008 08:31 GMT
Awesome! #
By Adam Foxton Posted Thursday 15th May 2008 09:12 GMT
100Hz #
By Mike Dyne Posted Thursday 15th May 2008 09:35 GMT
Shutter glasses. #
By JonB Posted Thursday 15th May 2008 11:29 GMT
Re MrM - Thought it was just me! #
By Anonymous Coward Posted Thursday 15th May 2008 12:28 GMT
100Hz vs 120Hz #
By John Posted Thursday 15th May 2008 14:17 GMT
@ JonB #
By Anonymous Coward Posted Thursday 15th May 2008 14:41 GMT
Shutter glasses. #
By JonB Posted Thursday 15th May 2008 15:06 GMT
Waste of power #
By Chris C Posted Thursday 15th May 2008 15:30 GMT
0.017 second delay. #
By Anonymous from Mars Posted Saturday 17th May 2008 03:12 GMT
CRT is the answer #
By Phil B Posted Saturday 17th May 2008 23:37 GMT