The issue isn't that the color has changed in the file ... the issue is that the gamma or the outer-range of signal have been changed by a video player. Or both. Similar to the note above in this thread by another person, my video card (EVGA GTX-770/4Gb of course nVidia based) installed itself using it's own default setup for video programs: 16-235. Unless a video player (such as that within PrPro) insists on doing it's own thing, that will "rule" what happens. Shrink a 0-255 video to 16-235 and wow ... the darks just ain't so dark, the highlights mush, and the color tends to flatten a bit ... as of course does contrast (the last two are linked, of course, as far as "data" goes). Now, let's throw on top the gamma question ... different video players treat gamma a bit differently. In other threads when someone provides an example of "bad" export by PrPro, another user has taken the "bad" clip, changed the gamma inverse to what the used video player typically does, and gee ... it suddenly and completely matched the "original" example set side by side with the "bad export" example. Again ... it wasn't that PrPro had done a bad job, but that the gamma used by the video player was a bit different. You cannot control those variables in other machines run by other people ... the range issue or the gamma issue ... on all devices that will show your material. You can check if PrPro is exporting other than expected by bringing an exported clip back into PrPro ... with appropriate settings on the export, it SHOULD match the original. If on another machine in say Quicktime ... it probably will not. Given that many nVidia chipped cards set up with an assumed 16-235 range, and shrink all other material down into that range, there's a problem right there. Throw in the typical gamma mismatch between Quicktime and most anything else, you've got two variables that are WRONG. And that you as the "content provider" cannot control. After changing the default nVidia control panel setting to assume 0-255, VLC seems to behave properly on my machine. Quicktime treats the same output into different codecs differently. Matched exports ... always play like the original in PrPro, and since I changed the nVidia setup default they play the same in VLC, but ... play differently depending on which codec is used in Quicktime. Which is why around "here" a lot of folks stay the heck away from it. At least as far as any "critical" viewing goes. Or use it only to get an idea how Quicktime will mangle their efforts. If "your" market is all running Quicktime, then ... plan for it by testing and finding what settings you need to make in PrPro to make "in the wild" Quicktime players "show" your file somewhat maybe closer to what you want. And if they're on nVidia chips, well ... you might need to output to 16-235. Or ... output correct material. And know you can't control what others do. Whichever fits your market needs better. Neil
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