[hdmkv]

Story here.

Their launch playlist here.

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Just downloaded one, but MediaInfo shows 8-bit and BT709... huh? Shouldn't HDR be 10-bit and BT2020? Looks like this tool I'm using only support H.264. Anyone know how to grab in original quality?

Code:

General
Complete name                            : C:\Users\hdmkv\Downloads\The World in HDR.mp4
Format                                   : MPEG-4
Format profile                           : Base Media
Codec ID                                 : isom (isom/iso2/avc1/mp41)
File size                                : 289 MiB
Duration                                 : 2 min 34 s
Overall bit rate                         : 15.7 Mb/s
Writing application                      : Lavf56.40.101

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : [email protected]
Format settings, CABAC                   : No
Format settings, ReFrames                : 2 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 2 min 34 s
Duration_FirstFrame                      : -33 ms
Bit rate                                 : 15.6 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Variable
Frame rate                               : 29.970 (29970/1000) FPS
Minimum frame rate                       : 29.970 FPS
Maximum frame rate                       : 29.990 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.063
Stream size                              : 287 MiB (99%)
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709

Audio
ID                                       : 2
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format profile                           : LC
Codec ID                                 : 40
Duration                                 : 2 min 34 s
Bit rate mode                            : Constant
Bit rate                                 : 126 kb/s
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Sampling rate                            : 44.1 kHz
Frame rate                               : 43.066 FPS (1024 spf)
Compression mode                         : Lossy
Stream size                              : 2.31 MiB (1%)
Default                                  : Yes
Alternate group                          : 1

[movie78]

You don't waste time
Good job saw the news will try to test it when I get on my HDR TV.

PS: I used a different tool and the results are the same as above.

[wesk05]

YouTube HDR videos are VP9 Profile 2. I don't think any of the released boxes (including the Shield) supports hardware decoding for that. I could be wrong here.

@hdmkv: try the mkv version in 4K downloader, that is the one that fetches VP9. I checked "The World in HDR", but mediainfo provided very little video information.

You can also use this guide from cnx-software: How to download YouTube Videos with YoutTube-dl script

[hdmkv]

Yep, not very revealing...

Code:

General
Unique ID                                : 63635970217053437688957198496495860849 (0x2FDFD7911EE47CF2424CDDB46C0C7C71)
Complete name                            : C:\Users\hdmkv\Downloads\The World in HDR.mkv
Format                                   : Matroska
Format version                           : Version 4 / Version 2
File size                                : 460 MiB
Duration                                 : 2 min 34 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 25.0 Mb/s
Writing application                      : Lavf56.40.101
Writing library                          : Lavf56.40.101 / Lavf56.40.101

Video
ID                                       : 1
Format                                   : VP9
Codec ID                                 : V_VP9
Bit rate                                 : 24.3 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Variable
Default                                  : Yes
Forced                                   : No
DURATION                                 : 00:02:34.554000000

Audio
ID                                       : 2
Format                                   : Vorbis
Format settings, Floor                   : 1
Codec ID                                 : A_VORBIS
Duration                                 : 2 min 34 s
Bit rate mode                            : Variable
Bit rate                                 : 128 kb/s
Channel(s)                               : 2 channels
Sampling rate                            : 44.1 kHz
Compression mode                         : Lossy
Stream size                              : 2.36 MiB (1%)
Writing application                      : Google
Default                                  : Yes
Forced                                   : No
DURATION                                 : 00:02:34.571000000

[Soli]

It doesn't have to be in bt.2020 to be HDR. In fact (and correct me if I'm wrong), all the browsers now do proper color management for pictures but I'm not sure if it affects video playback yet. (Except the gamma LUT which is inherent in the OS or GPU itself)

[DJ_Izumi]

Probably should have read the part that Samsung would later update it's YouTube apps BEFORE I ran to log into the YouTube app on the Samsung HDR TV I bought just on Friday.

I really wish there were better ways to tippy toe into HDR that didn't involve buying an Xbox One S and some UHD BDs or to pay for Netflix.

[wesk05]

It doesn't have to be in bt.2020 to be HDR. In fact (and correct me if I'm wrong), all the browsers now do proper color management for pictures but I'm not sure if it affects video playback yet. (Except the gamma LUT which is inherent in the OS or GPU itself)

If you were to follow HDR10 Media Profile standards set by CEA or BT.2100 by ITU, it has to be in Rec.2020 with 10-bit color depth and YCbCr 4:2:0 (CEA).

* Note: HDR10 Media Profile is defined as:
EOTF: SMPTE ST 2084
Color Sub-sampling: 4:2:0 (for compressed video sources)
Bit Depth: 10 bit
Color Primaries: ITU-R BT.2020
Metadata: SMPTE ST 2086, MaxFALL, MaxCLL

CEA: HDR compatible display

[wesk05]

Here are two of the HDR clips:

The World in HDR
The Redwoods

They will not play on the Shield (only audio) or the X9S. They will play on the Mi Box (no HDR). Only the Chromecast Ultra and Samsung 2016 UHD TVs will play YouTube HDR. The Shield is now outdated

@DJ_Izumi: can you try these clips on your new Samsung TV?

[Soli]

Yes, maybe. My answer was in theory.
Problem is, you're not getting the HDR stream with your computer, only the BT.709 SDR version, because your browser doesn't support color management for video plus computers are locked in good ol' gamma.

[wesk05]

Yes, maybe. My answer was in theory.
Problem is, you're not getting the HDR stream with your computer, only the BT.709 SDR version, because your browser doesn't support color management for video plus computers are locked in good ol' gamma.

Agree, in theory HDR doesn't need Rec.2020 colorspace, but HDR10 and Dolby Vision require Rec.2020. I am not sure of HLG.

[hansolo]

Well, some more technical details: http://www.mysterybox.us/blog
That was fun:
,,I should note that Resolve doesn't include the necessary metadata for full HDR10 compatibility, lacking fields for MaxFALL, MaxCLL, and the Mastering Display values of SMPTE ST.2086. It does mark the BT.2020 primaries and the transfer characteristics as either ST.2084 (PQ) or ARIB STD-B67 (HLG), which will let YouTube recognize the file as HDR Video. YouTube will then fill in the missing metadata for you when it prepares the streaming version for HDR televisions, by assuming you're using the Sony BVM-X300."

[Soli]

If that made you chuckle, then you know you are a video nerd

[soyhakan]

Last night i tried those youtube videos which supposed to hdr but no luck. They played in sdr. First i use my browser (firefox & chrome) as expected they played as sdr.(my video card does not have hdmi 2a) But i have some software (4k video downloader and internet download manager) that i use them download youtube videos. I expected those softwares can download these videos in full quality (4k,vp9,hdr) but downloaded videos are normal 4k h264 sdr videos. So maybe those softwares requred an update. Or like netflix (on a computer you can't access to 4k content) hdr version is available for only the some hardware for example Chromecast Ultra as an app. Using directly youtube on 2016 lg c6 also didn't give me a hdr image. I think the only currently supported device for YouTube HDR is the new Chromecast Ultra.

[movie78]

@hdmkv

like the new avatar!!

[soyhakan]

Here are two of the HDR clips:

The World in HDR
The Redwoods

They will not play on the Shield (only audio) or the X9S. They will play on the Mi Box (no HDR). Only the Chromecast Ultra and Samsung 2016 UHD TVs will play YouTube HDR. The Shield is now outdated

@DJ_Izumi: can you try these clips on your new Samsung TV?

Those clips are diffrent then i downloaded. (same videos but they are in vp9 format.The videos that i downloaded are in h264) Also when played with mpc-hc they has washed picture like any hdr video. Madvr didnt convert them to sdr (still washed out picture with madvr) Also tried them on LG C6 but same result. Tv did not engage hdr mode just give me washed out picture.