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giovannis6224513
giovannis6224513
Known Participant
December 20, 2017
Answered

Videos from PC monitors to HD televisons

  • December 20, 2017
  • 2 replies
  • 457 views

Hello everyone,

I am trying to make some videos to watch it on TV HD directly from a USB pen or hard drive, but the color looks very bad, while on the PC monitor it looks very good.

The videos have a space of color 709 and legal limits ... until here everything is correct.

I think HD TVs have a different color space than PC monitors.

Does anyone know how to solve this problem?

I need to put some lut for color management?

Thank you.

This topic has been closed for replies.
Correct answer R Neil Haugen

I use a Dell U2312HM monitor for my playback/program monitor, calibrated with the i1 system ... and have had no troubles with either TV viewing via USB drive or DVD or web uploads for clients. In both cases, I see in the final product what I expect to see.

Now ... some of the new TV's may be using different color spaces as there's all sorts of new standards being bandied about. So you'd need to see what any TV that shows up odd is doing for color spaces. Plus the choice of viewing mode makes a huge difference. We have an LG at home that has something like 6 built-in viewing choices from sports to cinema to all sorts of things. All of those choices do things to the image that I don't want, as can be seen when going into the fine controls available on that set after choosing one of those modes.

Sports will lift the gamma and punch saturation; cinema takes the brights down and heavily darkens the shadows, but ... applies an auto-adjustment to lift really dark scenes. Which it does ... uniquely.

Once it was more properly set from a pluge and filter calibration, which was saved to a Custom setting, anything I produce here shows there in very fine shape both gamma & tonality/saturation.

Past that, I just have to let clients see what their monitor or tv shows. As I said earlier, I can't correct for gramma's green tv ... or someone on sports or cinema or whatever "viewer enhancement mode" their tv is set for.

Neil

2 replies

E
excited_Genie16B8
Legend
December 20, 2017

You can't really use your computer monitor for quality control work.  The ideal set up is to hook up an I/O device like the Intensity from Blackmagic or the T-Tap from AJA and connect that to a properly calibrated, best quality display you can afford.  Only then can you be sure you're seeing the image accurately, which is the first step in color work.

    R Neil Haugen
    R Neil Haugen
    Legend
    December 20, 2017

    First thing is to realize that monitors do NOT come set for good color ... are you managing your monitor with a puck & software calibration setup, in a controlled lighting area?

    Second thing is to understand tv's come from the factory designed to "enhance the viewer experience" ... which means they're all set all over the place. An old saying among colorist's is you can't fix gramma's green tv. Essentially, unless any particular tv has also been set to broadcast standards, you won't know exactly how what you're grading will be seen by anyone. Is that tv calibrated?

    Neil

    Everyone's mileage always varies ...
      giovannis6224513
      giovannis6224513Author
      Known Participant
      December 20, 2017

      Hi Neil,

      the television is normal, is good ...

      If y put an dvd ripped file y see a good image ... but if i put a video for pc monitos i see a poor colors ... very poor, it's no a problem of calibration

      My videos are good for, pc but very poor for hdtv ...

      The space color of the dvd is bt709 like to my video ... but in the hdtv the color is very incorrectly.

      I have see others internet videos and all of it have this problem ... the hdtv have a diferent space color of pc monitor ...

      I think all videos for internet have a very bad reproduction in a hdtv ...

      I'm searching a solution to can put my videos in the memory usb or hard disk directly to usb port of hdtv ...

      Then i need make diferent file for hdtv and pc ...

      Thank you Neil

      R Neil Haugen
      R Neil HaugenCorrect answer
      Legend
      December 20, 2017

      I use a Dell U2312HM monitor for my playback/program monitor, calibrated with the i1 system ... and have had no troubles with either TV viewing via USB drive or DVD or web uploads for clients. In both cases, I see in the final product what I expect to see.

      Now ... some of the new TV's may be using different color spaces as there's all sorts of new standards being bandied about. So you'd need to see what any TV that shows up odd is doing for color spaces. Plus the choice of viewing mode makes a huge difference. We have an LG at home that has something like 6 built-in viewing choices from sports to cinema to all sorts of things. All of those choices do things to the image that I don't want, as can be seen when going into the fine controls available on that set after choosing one of those modes.

      Sports will lift the gamma and punch saturation; cinema takes the brights down and heavily darkens the shadows, but ... applies an auto-adjustment to lift really dark scenes. Which it does ... uniquely.

      Once it was more properly set from a pluge and filter calibration, which was saved to a Custom setting, anything I produce here shows there in very fine shape both gamma & tonality/saturation.

      Past that, I just have to let clients see what their monitor or tv shows. As I said earlier, I can't correct for gramma's green tv ... or someone on sports or cinema or whatever "viewer enhancement mode" their tv is set for.

      Neil

      Everyone's mileage always varies ...
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