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19th February 2005, 20:39 | #1 | Link |
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question about YUV -> RGB
TV Scale uses luminance 16-235 cause a tv is unable to go higher than 235 and lower than 16 or is there another "cause" ?
i want to be sure that TV Scale gives a better quality on a TV screen cause i encode all my movies for watching on a TV. |
19th February 2005, 22:57 | #4 | Link | |
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19th February 2005, 23:02 | #5 | Link | |
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absolutely no TVs are able to display a range higher than 16-235 ? |
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19th February 2005, 23:04 | #6 | Link | |
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Last edited by KaiserS; 19th February 2005 at 23:07. |
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19th February 2005, 23:15 | #8 | Link |
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NTSC is an analog interface. It makes no sense to speak of digital pixel values on the analog interface. The fact of the matter is that YUV is defined to be the clipped ranges. Sending something outside them is an undefined operation. It will likely be clipped somewhere, and if not it may cause artifacts.
Crank up your contrast control, Spyn, if you want more range. |
20th February 2005, 11:37 | #9 | Link | |
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I don't understand all that you said cause of poor english and knowledge, sorry. |
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20th February 2005, 17:34 | #11 | Link | |
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I got a pioneer DV-470 divx player connected to my tv with a SCART connector using RGB mode so i think i can use PC-Scale (0-255) without any artifacts ? Do you know which range is used by Y/C (S-video) ? thank's for your answers |
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20th February 2005, 19:21 | #15 | Link | |||
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20th February 2005, 21:20 | #16 | Link | |
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here is a screenshot of dgindex using pc scale : dgindex using tv scale : after loading each d2v file (one using pc scale, other using tv scale) in a .avs and open those avs using vdubmod, here is the result : .d2v created using pc scale : .d2v created using tv scale : both vdub screenshots shown that in all case pc scales is use (0-255) Last edited by Spyn; 20th February 2005 at 21:22. |
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20th February 2005, 21:50 | #17 | Link |
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VirtualDub is converting back to PC scale as part of its YV12 decompressing. It always wants to display in the display pane as RGB.
Actually, DGDecode only uses the scale setting in two cases: when you use the extra convert to RGB filters in the DLL, and when a 3rd-party app, such as Gordian Knot or VFAPI, requests an RGB frame. Normally, the served D2V passes out 16-235/240. |
20th February 2005, 23:17 | #18 | Link | |
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20th February 2005, 23:44 | #20 | Link | |
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Last edited by KaiserS; 20th February 2005 at 23:51. |
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