Originally Posted by JohnnytheSkin
Does anyone force Dolby Vision for all 4k and regular Blu-ray? Can't find any hard info on the pros and cons, or even what's happening with the conversion.
Any help would be greatly appreciated!
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I'd ignored the new firmware with DV conversion because with my Apple TV 4K I did not get good results initially. I'm just playing with this feature and it has the potential to really affect my collecting strategy (I'll often go for DV digital version on iTunes or Vudu over an HDR disc).
My initial takes (near conclusions) after some testing and perusing of discussion in this thread:
1. YMMV will vary because if lets say your Dolby Vision video setting group on your TV are perfectly calibrated and your SDR setting is not then you could get a great benefit just using the calibrated DV input. The reverse is actually much more likely as DV calibration is a new thing even for the experts.
2. Same logic versus HDR with this. In a sense you're also testing how good your calibration settings are for HDR, SDR, DV, maybe even daytime versus night time viewing.
I'm no calibrator, but have been very avid with my TV about tracking down these best possible settings to the point of even getting some kind of DV calibration file loaded to my TV. My viewing preference has been for DV digital over HDR disc hands down.
I'm quite familiar with Dolby Vision Star Trek and ST Into Darkness on iTunes, but just noticed when perusing my collection in the last week that they are not Atmos, so I got them on HDR disc. Initially very unhappy with the video versus my Apple TV 4K, I quickly discovered that somehow my Oppo video preset 1 had been set back to 0 so my initial bad reaction to the discs was partially do to not having the best settings (DV mode overrides these settings in Oppo). That led me to looking at firmware notes and updating to the latest firmware with DV conversion.
My initial impressions are very, very good. It seems subtle to the untrained eye, but I must say that my first glance I'm very hopeful:
1. The two HDR Star trek discs converted to DV by the Oppo just seemed to erase my concerns about HDR disc vs DV. Everything seemed familiar and very much like the digital version; so much so that I suspect Oppo may be doing the same process that is done for these digital Dolby Vision releases for/by Apple/Vudu.
2. I liked the DV so much I also bought the DV/Atmos version of Star Trek Beyond. Interestingly I used the Beyond HDR disc a lot to tune my Oppo's video presets and some general HDR setting tuning on my TV. I very much liked the DV version of Beyond on iTunes much like the other titles.
3. SDR bluray I like as well and change is very subtle. Its like the DV conversion is tuning like it does for HDR vs Dolby Vision on disc. Again this is very dependent on just how well setup your inputs are and I suspect my DV input of being a touch better than Technicolor HDR on my LG Oled.
I've got an extensive collection of digital Vudu/iTunes and quite a few HDR doubles on disc so believe me I'm going to be going bonkers on this Oppo DV conversion feature because it totally affects my whole collection strategy. I'm also realizing that it may impact my bucket list desire for an HTPC in my system which won't be able to do the DV conversion done by the Oppo. If the Oppo is as strong at HDR to DV conversion as I suspect (similar to digital Vudu version), then this means HTPC playback will be unacceptable for me as the Oppo taking it to DV will always win hands down. I've got a lot of testing to do before I buy any more movies so I should have some more firm conclusions I'll comeback and post. I may also have to fiddle with forcing DV discs to HDR and dig back into my Technicolor HDR settings for tuning or perhaps fresh suggestions on AVSForum.
Really comparing this correctly is a herculean task and it may be why there has not been a lot of technical discussion. I'm pretty sure its unknown what Vudu/iTunes/Dolby do to make DV digital copies versus the disc. Its also unknown what Oppo is doing. My very, very initial hypothesis is that they are the same and if that were the case, then the Oppo Dolby Vision conversion would be a rather amazing feature and not just some questionable gimic.