DOLBY (Dolby Laboratory ) is not the only one that is the commercial screening solution or home theater application technology, but it is definitely the pioneer and leader of technology. In the past, Dolby Labs was committed to sound effects technology in various applications. In the UHD era, Dolby Labs has HDR technology that is ahead of the industry, such as Dolby Vision. In terms of home audio and video, Dolby Labs now has two leading audio and video technologies: Dolby Vision and Dolby Atmos (Dolby Atmos) . is not uncommon. Even IMAX needs to cooperate with DTS to cooperate with immersive sound technology + HDR solutions to fight.
2018, 4K HDR film sources are widely spread, and the two mainstream immersive surround sound technologies, DTS: X and Dolby Atmos have been popularized for a long time. However, there are very few film sources with Dolby Vision. In addition, devices that support Dolby Vision are only a few self-luminous displays with a certain luminous intensity. Nowadays, the brightness of home projectors cannot fully meet the requirements of HDR10, let alone the much stricter Dolby Vision.
However, now Dolby will insist on releasing an Blu-ray demonstration disk every two years. By 2018, this latest UHD Blu-ray demonstration disk (full name Dolby UHD Blu-ray Demo Disc/Mar 2018), it is even more interesting. It has selected more Dolby Vision demonstration clips. What’s interesting about is that even if there is one of your device system that does not support Dolby Vision, it cannot be played. Even if you convert into other HDR technologies, it is not allowed. You must see the complete Dolby Vision effect. I believe that Dolby is quite confident in the charm of its own technology.
▌Dolby Vision video demonstration dominates
came to the 2018 Dolby Demonstration Disc. This time, I finally have a test clip with Dolby Vision. In the cover of the disc, in addition to eye-catching words like NOT FOR RESALE, what attracts the author is the logo of Dolby Vision and Dolby Atmos. It can be said that this demonstration disc is the real collection of Dolby Lab's current best home theater audio and video technology.
2018 DOLBY UHD Blu-ray Demonstration Disc Main Interface
In this 2018 Dolby UHD Blu-ray Demonstration Disc, if you follow the previous conventions, the author will first take a look at which Dolby’s selected movie clips have been included in the demo disc. But this time it was completely different. It can be regarded as a trend of further promotion by HDR. In the 2018 Dolby UHD Blu-ray Demonstration Disc, more than half of the selected clips specifically demonstrating the Dolby Vision screen were specially designed. The various demonstration images under Dolby Vision are rich and realistic enough. Through the transparent and bright natural pictures, Dolby's affirmation of its own Dolby Vision technology.
non-atmospheric demonstration disk, only in Dolby Vision demonstration, the audio is DD5.1
It can be seen that Dolby Vision has been turned on 4K 60 frames 12bitml5
You can see HDMI output information. Some demonstration clips are 4:2:2, and some are 4:4:4 (10bit)
2018 Dolby UHD Blu-ray demonstration disk, which is divided into six columns, namely Dolby Content (DOLBY) CONTENT), Art (ART), NATURE, Movies and TV Series (MOVIESTV), Music (MUSIC) and Sports (SPORTS). Among the selected movie test clips we have focused on in the past, only 5 movies were selected from the 2018 Dolby UHD Blu-ray Demonstration Disc, namely "Kong: Skull Island", "Resident Evil: Revenge", "Lego Batman Movie", "Agents: City of Thousand Stars" and "Wonder Woman". Except for the two music clips, it can be said that the others are selected to reflect the bright pictures of Dolby Vision.
test screen
▌The system must fully support two technologies
As I said at the beginning, this 2018 Dolby UHD Blu-ray demonstration disk has a very interesting aspect, that is, the audio and video system that requires the user must fully support Dolby Vision and Dolby Atmos. The side can play all the content in the demonstration disk normally, including movie clips.If your system does not support it but wants to play it forcibly, then after opening it, several English words will be displayed in the screen, the clip content is muted and the English voice prompts you: Your system cannot fully play Dolby Vision or Dolby Atmos, please change the supported device.
If your device does not support Dolby Vision or Dolby Atmos, the demonstration clip will be voice prompted all the time. Therefore, this demonstration disk requires users to have a set of devices that support Dolby Vision Dolby Atmos
. That means, the 2018 Dolby UHD Blu-ray demonstration disk emphasizes that you must have supported devices to allow playback in order to fully experience the color and brightness performance of Dolby Vision. It does not give you the opportunity to convert to SDR or even other HDR modes, but forces you to only experience the Dolby Vision effect. From the player to the HDMI cable, then to the AV amplifier (for example, the OPPO Blu-ray machine can skip the AV amplifier part through the dual HDMI interface audio and video diversion) and display devices, all must support Dolby Vision to play. is a hit to death. It can be said that all household 4K UHD projectors are used. In the household market, only a few TVs with higher brightness can support Dolby Vision.
screen screen
The same is audio, and your system must support Dolby Atmos to allow you to play. In fact, this is much simpler than forcing Dolby Vision. Today's AV amplifiers generally support Dolby Atmos decoding. Even if you do not have the top channel, your AV amplifier supports Dolby Atmos decoding. It is no problem to play this demonstration disc (provided that Dolby Vision is supported), unless your amplifier only supports DolbyTureHD at most.
screen camera screen
▌More brightness and richer colors
So in the 2018 Dolby UHD Blu-ray Demonstration Disc, the protagonist will naturally be replaced by Dolby Vision this year, but the significance of this disc is that it combines two top technologies, Dolby Dolby Vision and Dolby Atmos, and is also quite reference-based. Among so many Dolby Vision test screens, this demonstration disc allows the author to enjoy the highly dynamic and realistic pictures belonging to Dolby Vision. Except for movie categories, all Dolby Vision test screens are 60 frames. Through the feedback from the Blu-ray machine information menu, also learned its 10bit/12bit sampling depth information, resolution, sampling information, color gamut, etc.
The classic Dolby Atmos bird surround flight + thunder low-frequency demonstration clip has been replaced with a more transparent and beautiful Dolby Vision screen with various carefully crafted slow motion pictures, allowing the author to feel the realistic and colorful three-dimensional demonstration screens formed by combining 60 frames, 4K resolution, 10 bits and the most important Dolby Vision. Each demonstration screen production can be called exquisite.
What I remember most is the biggest advantage of Dolby Vision - the collection of natural light images. For example, in the clip of "Art of India", in those real-life scene shots, through the restoration of Dolby Vision, the high dynamic brightness range that is close to the human eye can be finally restored in the display device: under the strong sunlight, the person who is not directly exposed by the sun on the aisle is not completely darkened by the compression dynamic processing like before, and the sunlight reflected by the pillars has not been overexposed, but a bright pillar. The color of the pillars is also vividly displayed rather than overexposed, and the blue sky outside is also captured clearly with the clouds. This is the powerful charm of Dolby Vision!
screen shot:
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In several selected movie clips, although Dolby Vision is also opened, it is still mainly audio. The selected clips are more about the realistic restoration of the surround information and the moving trajectory. In addition, most of the surround channels of the demonstration clips have dynamic and large sound field trajectory information, such as thunderstorms, impacts and explosions. It can be said that the 2018 Dolby UHD demonstration disc really shows us the advantages of Dolby Vision, and also demonstrates the strength of Dolby Labs through combining Dolby Atmos.
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