thx optimizer on any Blu-ray movies ?
-
Now Available: Tech Talk Podcast with Scott Wilkinson, Episode 19 Click here for details.
1 - 16 of 16 Posts
Joined
·
20,735 Posts
I do not recommend using the THX patterns. Only as a stop-gap.
Wall-E has the THX stuff.
It really shouldn't be different than a DVD. The DVD in an upscaling player the player should be switching the color space from 601 to 709 for you, the resolution will be 1080p.
The only thing I can think of that would cause signifigant differences is if your BD didn't upscale, as often TV's have per input, per resolution settings.
Honestly for someone that isn't going to use a colorimeter I think the THX stuff is fine for doing rough brightness/contrast and if you've got blue filters color/tint. Granted this isn't close to what you can do with instruments, but a better disc probably won't get you much better results unless you have specific needs (geometry, convergence, ect...)
It really shouldn't be different than a DVD. The DVD in an upscaling player the player should be switching the color space from 601 to 709 for you, the resolution will be 1080p.
The only thing I can think of that would cause signifigant differences is if your BD didn't upscale, as often TV's have per input, per resolution settings.
Honestly for someone that isn't going to use a colorimeter I think the THX stuff is fine for doing rough brightness/contrast and if you've got blue filters color/tint. Granted this isn't close to what you can do with instruments, but a better disc probably won't get you much better results unless you have specific needs (geometry, convergence, ect...)
____________________________________________________________ _____
Why is that Chris? I thought George Lucas and his THX system was so highly respected. Or is that just for the audio portion?
Is there anything other than Wall-E? I normally don't watch cartoons.
____________________________________________________________ _____
Why is that Chris? I thought George Lucas and his THX system was so highly respected. Or is that just for the audio portion?
Is there anything other than Wall-E? I normally don't watch cartoons.
Joined
·
3,587 Posts
Every device that up-converts 480 to 1080 SHOULD convert the SD color to HD correctly, unfortunately very few (perhaps very very few) do it. Most do NOTHING but up-convert and you are left with a problem that annoys me quite a bit... reds from SD sources (like DVD) that are noticeably too orange. This is easiest to detect with familiar colors of red... London buses, Coke advertising, American flag red, Stop signs, etc. Other colors are affected as well, but I find the reds are much easier to spot as being a problem than anything else. There are few video displays that have selectable SMPTE-C and Rec 709 color matrix settings (some Sony XBR models have had that setting, don't recall it in other displays but there are probably some others).
Every device that up-converts 480 to 1080 SHOULD convert the SD color to HD correctly, unfortunately very few (perhaps very very few) do it. Most do NOTHING but up-convert and you are left with a problem that annoys me quite a bit... reds from SD sources (like DVD) that are noticeably too orange. This is easiest to detect with familiar colors of red... London buses, Coke advertising, American flag red, Stop signs, etc. Other colors are affected as well, but I find the reds are much easier to spot as being a problem than anything else. There are few video displays that have selectable SMPTE-C and Rec 709 color matrix settings (some Sony XBR models have had that setting, don't recall it in other displays but there are probably some others).
Joined
·
20,735 Posts
Their Optimode idea was one of the WORST concepts ever. The patterns were originally meant to be title-specific. Some of the HD titles with THX patterns are clipped.
Purchase a real calibration disc with a more thorough, and ACCURATE pattern set.
Their Optimode idea was one of the WORST concepts ever. The patterns were originally meant to be title-specific. Some of the HD titles with THX patterns are clipped.
Purchase a real calibration disc with a more thorough, and ACCURATE pattern set.
Joined
·
20,735 Posts
Also, note that SD 601 is different than HD 709. SD and HD colors are slightly different, you should check each chain independently.
you can use any Sony/Columbia Blu-Ray disc and type 7669 enter in the main menu to access hidden test patterns. The color/tint graph has a pludge bar, so you can adjust color/tint with blue filter as well as brightness of your display assuming it displays btw using your Blu-ray player.
Joined
·
20,735 Posts
I agree with you 100%, I think they should twist the colorspace, however many don't. And some influential people argue the contrary because there are 601 and 709 flags, but realistically nobody uses those and they aren't read by anything I am aware of, so it's kind of a theoretical argument. Which is why manually selectable decoding is an excellent failsafe for either case.
However it is important to note that you mean Rec 601 and Rec 709 color matrix settings, NOT SMPTE-C vs. Rec 709 which is a color gamut difference which is altogether unrelated and an entirely different can of worms!
I agree with you 100%, I think they should twist the colorspace, however many don't. And some influential people argue the contrary because there are 601 and 709 flags, but realistically nobody uses those and they aren't read by anything I am aware of, so it's kind of a theoretical argument. Which is why manually selectable decoding is an excellent failsafe for either case.
However it is important to note that you mean Rec 601 and Rec 709 color matrix settings, NOT SMPTE-C vs. Rec 709 which is a color gamut difference which is altogether unrelated and an entirely different can of worms!
Joined
·
25,610 Posts
You can pop-up a complete (?) list here: http://thx.com/home/dvd/search.html . Blu-ray titles are marked "BD". There are only a few.
-Bill
You can pop-up a complete (?) list here: http://thx.com/home/dvd/search.html . Blu-ray titles are marked "BD". There are only a few.
-Bill
1 - 16 of 16 Posts
