Question:
I got my first R1 disk this week,Blade 2 and played it on my Thomson 32'' WS tv.I noticed a slight flickering of the picture not all the time but enough for me to notice.
What could be causing this?Or am I imagining it:nuts:
If anyone could point me in the way of a site/or site's that explain NTSC/PAL playback I would be very grateful.
:)
I get that. I get SLIGHTLY jerky picture on certain R1 DVDs. Not all of them do it, but when they do, it's just enough to put me off :(
Sounds like 3:2 pulldown (http://www.commotionpro.com/support/white_papers/3-2.html).
Guess there nothing I can do to improve it then if it's 3.2 pulldown?
Will differant connections mke a differance?Is it worse/better with differant make's of tv?
if the picture flckering i had the same problem with my thomson tv if i connected my dvd player to the tv using rgb scart for some reason the tv doest handle rgb mostly when using ntsc discs very well when i connected via an svideo cable the flickering stopped i know svideo is not as good as rgb but it was a trade off i could live with. So if you have an svideo out on your dvd try using that method borrow an svideo cable and switch the dvd player to out put svideo and plug cable into the svideo socket in the tv.
3/2 pull down doest giver flickering it gives a jerky motion and is most evident during slow panning shots
Could be the problem i had. Anything with a motor near the TV or connected along the same ring main causes interference flicker on NTSC!
Try turning off all applicances!
Is the flickering juring panning shots? If so, it sounds like 3:2 pulldown.
More on that here (http://www.dvdfile.com/news/special_report/production_a_z/3_2_pulldown.htm) and here (http://www.cs.tut.fi/~leopold/Ld/FilmToVideo/).
To get around it you can either play the DVD on a PC (where in the right circumstances it will play at the correct framerate), or get a DVD player with progressive scan and a TV that accepts progressive scan input (and a 2nd mortgage to pay for it :D).
If not 3:2 pulldown, then not sure. Is it a 100Hz TV? Could be a 100Hz processing 'effect'. Does the DVD player convert NTSC to PAL60 or PAL50? That could have an effect.
The picture was perfect for most of the film but every so often you would get a flicker like faint black line'swidth ways across the screen.
You wouldent even really notice it unless you really looked.The set up was a temp measure,I just got the amp,multi region dvd player and speakers and was trying the set up out on my dad's tv.So there was alot of equipment next to each other.
After checking the dvd player on mt tv found my tv doesnt accept NTSC so gota get a new tv now.
Chas Ill give your advice ago tomorrow.
Deadkenny thanx for the links will look in more detail tomorrow.
My dvd player is a Toshiba 220e
I noticed that on all of my macrovision protected NTSC discs (which is most of them, except Hong Kong, Anchor Bay or some others). The flickering only occurs during the actual film and not menus, or trailers or anything that's not protected. Once I disabled Macrovision on my Pioneer DV444, the problem was solved.
Maybe it was a TV issue aswell, as it probably couldn't handle macrovision NTSC signals.
Originally posted by Purpledump
I noticed that on all of my macrovision protected NTSC discs (which is most of them, except Hong Kong, Anchor Bay or some others). The flickering only occurs during the actual film and not menus, or trailers or anything that's not protected. Once I disabled Macrovision on my Pioneer DV444, the problem was solved.
Maybe it was a TV issue aswell, as it probably couldn't handle macrovision NTSC signals.
Do you use an RGB SCART connection? I believe RGB generally gets around macrovision problems (or macrovision doesn't work with RGB, which is why Sony made the RGB output for DVDs 'green' on the PS2).
Shouldn't really be a problem as Macrovision is designed around a weakness in modern VHS machines. The idea is I believe that most modern VHS machines don't actually record the full strength PAL/NTSC signal and are susceptible to minor variations in the signal. Macrovision generally adds tricks like varying the signal strength, or something like that, to give flashing/flickering/scrolling effects (and even messages saying "this is a copy" so I've heard). Apparently some older VHS machines can cope with much weaker signals so aren't affetced. However, most TVs can cope with such signals (but it's apparently a problem for projectors I think?).
i thought macrovision triggered a microchip in the VCR so it messed with the gain on the image, old VHR's aren't effected as they don't have the chip in.
Originally posted by danielzavitz
i thought macrovision triggered a microchip in the VCR so it messed with the gain on the image, old VHR's aren't effected as they don't have the chip in.
Sounds like it. Don't know if it's a microchip as such, but according to this (http://www.repairfaq.org/REPAIR/whole/F_tvfaq.html#TVFAQ_219) it's to do with the video-AGC (Automatic Gain Control).
Interestingly it does say that all TVs are required to ignore the copy protection pulses (doesn't mean there aren't problems with them though).
i notice on all NTSC films that the top of the TV (its just noticable) that it is wavey I.E. if it is a Full Screen Presentation and say an actors head is there there top of the head is at a slight angle to the rest of the head.
its hard to describe...
---------------------------------------
---------------------------------------
is sort of what its like (hope this shows right :D)
Mine used to do exactly that SAS - was easy to fix tho - I bought a new DVD player and a Plasma Screen....
(to be exact - the Hitachi TV didn't like the combination of NTSC and macrovision)
are you sure your thomson tv doest handle ntsc well my thomson does ntsc ok if i use the svideo, plug cable into side of the tv and select av3 from the main tv menu and make sure you change the tv input for av3 to svideo and make sure you tell the tosh to output an svideo signal as well
What could be causing this?Or am I imagining it:nuts:
If anyone could point me in the way of a site/or site's that explain NTSC/PAL playback I would be very grateful.
:)
Answers:
I get that. I get SLIGHTLY jerky picture on certain R1 DVDs. Not all of them do it, but when they do, it's just enough to put me off :(
Answers:
Sounds like 3:2 pulldown (http://www.commotionpro.com/support/white_papers/3-2.html).
Answers:
Guess there nothing I can do to improve it then if it's 3.2 pulldown?
Will differant connections mke a differance?Is it worse/better with differant make's of tv?
Answers:
if the picture flckering i had the same problem with my thomson tv if i connected my dvd player to the tv using rgb scart for some reason the tv doest handle rgb mostly when using ntsc discs very well when i connected via an svideo cable the flickering stopped i know svideo is not as good as rgb but it was a trade off i could live with. So if you have an svideo out on your dvd try using that method borrow an svideo cable and switch the dvd player to out put svideo and plug cable into the svideo socket in the tv.
3/2 pull down doest giver flickering it gives a jerky motion and is most evident during slow panning shots
Answers:
Could be the problem i had. Anything with a motor near the TV or connected along the same ring main causes interference flicker on NTSC!
Try turning off all applicances!
Answers:
Is the flickering juring panning shots? If so, it sounds like 3:2 pulldown.
More on that here (http://www.dvdfile.com/news/special_report/production_a_z/3_2_pulldown.htm) and here (http://www.cs.tut.fi/~leopold/Ld/FilmToVideo/).
To get around it you can either play the DVD on a PC (where in the right circumstances it will play at the correct framerate), or get a DVD player with progressive scan and a TV that accepts progressive scan input (and a 2nd mortgage to pay for it :D).
If not 3:2 pulldown, then not sure. Is it a 100Hz TV? Could be a 100Hz processing 'effect'. Does the DVD player convert NTSC to PAL60 or PAL50? That could have an effect.
Answers:
The picture was perfect for most of the film but every so often you would get a flicker like faint black line'swidth ways across the screen.
You wouldent even really notice it unless you really looked.The set up was a temp measure,I just got the amp,multi region dvd player and speakers and was trying the set up out on my dad's tv.So there was alot of equipment next to each other.
After checking the dvd player on mt tv found my tv doesnt accept NTSC so gota get a new tv now.
Chas Ill give your advice ago tomorrow.
Deadkenny thanx for the links will look in more detail tomorrow.
My dvd player is a Toshiba 220e
Answers:
I noticed that on all of my macrovision protected NTSC discs (which is most of them, except Hong Kong, Anchor Bay or some others). The flickering only occurs during the actual film and not menus, or trailers or anything that's not protected. Once I disabled Macrovision on my Pioneer DV444, the problem was solved.
Maybe it was a TV issue aswell, as it probably couldn't handle macrovision NTSC signals.
Answers:
Originally posted by Purpledump
I noticed that on all of my macrovision protected NTSC discs (which is most of them, except Hong Kong, Anchor Bay or some others). The flickering only occurs during the actual film and not menus, or trailers or anything that's not protected. Once I disabled Macrovision on my Pioneer DV444, the problem was solved.
Maybe it was a TV issue aswell, as it probably couldn't handle macrovision NTSC signals.
Do you use an RGB SCART connection? I believe RGB generally gets around macrovision problems (or macrovision doesn't work with RGB, which is why Sony made the RGB output for DVDs 'green' on the PS2).
Shouldn't really be a problem as Macrovision is designed around a weakness in modern VHS machines. The idea is I believe that most modern VHS machines don't actually record the full strength PAL/NTSC signal and are susceptible to minor variations in the signal. Macrovision generally adds tricks like varying the signal strength, or something like that, to give flashing/flickering/scrolling effects (and even messages saying "this is a copy" so I've heard). Apparently some older VHS machines can cope with much weaker signals so aren't affetced. However, most TVs can cope with such signals (but it's apparently a problem for projectors I think?).
Answers:
i thought macrovision triggered a microchip in the VCR so it messed with the gain on the image, old VHR's aren't effected as they don't have the chip in.
Answers:
Originally posted by danielzavitz
i thought macrovision triggered a microchip in the VCR so it messed with the gain on the image, old VHR's aren't effected as they don't have the chip in.
Sounds like it. Don't know if it's a microchip as such, but according to this (http://www.repairfaq.org/REPAIR/whole/F_tvfaq.html#TVFAQ_219) it's to do with the video-AGC (Automatic Gain Control).
Interestingly it does say that all TVs are required to ignore the copy protection pulses (doesn't mean there aren't problems with them though).
Answers:
i notice on all NTSC films that the top of the TV (its just noticable) that it is wavey I.E. if it is a Full Screen Presentation and say an actors head is there there top of the head is at a slight angle to the rest of the head.
its hard to describe...
---------------------------------------
---------------------------------------
is sort of what its like (hope this shows right :D)
Answers:
Mine used to do exactly that SAS - was easy to fix tho - I bought a new DVD player and a Plasma Screen....
(to be exact - the Hitachi TV didn't like the combination of NTSC and macrovision)
Answers:
are you sure your thomson tv doest handle ntsc well my thomson does ntsc ok if i use the svideo, plug cable into side of the tv and select av3 from the main tv menu and make sure you change the tv input for av3 to svideo and make sure you tell the tosh to output an svideo signal as well
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