Advertisements Looks like there are some serious issues with the video output of this device when connected to a SDR TV (Samsung F8500 Plasma). Most likely also wrong with HDR but I'll let someone else investigate that. Attached are examples of output from a reference grade device like the Fire TV Stick 4K vs. the Tivo Stream 4K. I verified the output of the Amazon device exactly matches what is in the source file. You can obtain my near-black shadow detail calibration pattern here. This pattern has grayscale steps representing every possible near-black value from 16 (black) to 27 (5% white). Every step should be shown distinctly and only differ from previous step by one value: 16, 17, 18.....26, 27. On the Tivo Stream 4K, this pattern is incorrectly displayed. Values from 16 to 25 all get output as 25. This means you have elevated blacks shown as 25 instead of 16 and all shadow detail darker than 25 is crushed to 25. There is also some weird color dithering going on. If you toggle the hidden "Dolby Vision Disable" setting as explained elsewhere on the forum, you end up with this sequence instead: 16,16,17,18,20,21,22,22,23,24,26,26. While black level is correct, many of the steps are displaying the wrong value. No weird color dithering. Order of the 4 attached images is: *Fire TV Stick. *Tivo with hidden Dolby Vision setting disabled. *Tivo with default settings. *All 3 images tiled into a single image and gamma lowered to make the patterns easier to see on lower contrast display devices and/or in high ambient lighting.