Adjusting NTSC-J Black Levels

jealousy91 · 13th November 2015, 01:34

First off, I want to be clear that I'm a newbie to all this and have just started learning how to use virtualdub, avisynth, and all other related software's.

I have a Japanese DVD-Video that I want to adjust the NTSC-J black level to be consistent with standard NTSC-US video and wanted to know (or at least be sure of) what would be the proper way of doing it.

Also, are there any other standards to NTSC-J besides increased black levels ?

(One other thing, if there's already a thread or article that explains this please direct me to it.)

foxyshadis · 13th November 2015, 09:10

You shouldn't have to adjust anything for proper level on a DVD. NTSC-J is purely analog, and only matters when sending analog signals (such as from a Japanese DVD player to an American TV, which would be too dark). The DVD encodings are identical, including the same 16-235 light levels.

This might not be the case for homemade video, though; in that case you should check the histogram and make sure it's within 16-235.

13th November 2015, 01:34	#1 \| Link
jealousy91 Registered User Join Date: Oct 2015 Posts: 18	Adjusting NTSC-J Black Levels First off, I want to be clear that I'm a newbie to all this and have just started learning how to use virtualdub, avisynth, and all other related software's. I have a Japanese DVD-Video that I want to adjust the NTSC-J black level to be consistent with standard NTSC-US video and wanted to know (or at least be sure of) what would be the proper way of doing it. Also, are there any other standards to NTSC-J besides increased black levels ? (One other thing, if there's already a thread or article that explains this please direct me to it.)

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13th November 2015, 09:10	#2 \| Link
foxyshadis Angel of Night Join Date: Nov 2004 Location: Tangled in the silks Posts: 9,560	You shouldn't have to adjust anything for proper level on a DVD. NTSC-J is purely analog, and only matters when sending analog signals (such as from a Japanese DVD player to an American TV, which would be too dark). The DVD encodings are identical, including the same 16-235 light levels. This might not be the case for homemade video, though; in that case you should check the histogram and make sure it's within 16-235.