Background
Every year I calibrate my BenQ W7000 projector using the Disney WOW Blu-ray disk. Nothing fancy, I simply calibrate blacks, whites, and colour (using the provided blue filter). It's always a battle because I have to alternate between the three calibration videos several times, and each time I change videos the projector has to resync (which takes 20 seconds or so).
Brilliant Idea
So I had the brilliant idea of generating my own calibration video using Premiere and Encore – a video with three chapters, so that I can jump back and forth between chapters without losing sync.
1. Generate the Black, White and Colour videos in separate timelines in Premiere.
2. Export to Blu-ray format
3. Assemble in Encore and build to Blu-ray
Problem
The grayscale on the resultant Blu-ray was not accurate. For example, RGB (239, 239 239) generated as a Title in Premiere, ended up something like RGB (240, 238, 240). So I tried exporting with a variety of codecs and containers, and only ProRes 4444 gave the right results. But… when I imported ProRes 4444 into Encore, it had to be transcoded, and I ended up with the wrong colours again.
Accurate Grayscale
The Disney disk seems to have accurate grayscale, and some freebie calibration mp4 videos that I tried also have accurate grayscale, but I can't get Premiere to do it.
Question 1
When setting up grayscale panels and then rendering, what do I have to do inside Premiere to get accurate grayscale in a small output file? For example, the mp4 included in the download below, runs for 5 minutes, is colour accurate, and only consumes 2.3 MB (only 52kB when compressed).
My attempt in Premiere at generating a calibration disk, and a freebie calibration mp4 file as a comparison, can be downloaded here: http://www.mediafire.com/file/bcczbqm0ee5afuj/Grayscale.zip
Note: the levels named in the mp4 file have been shifted for some reason. 16 is actually Black (level 0) and 235 is white (level 255).
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