you get a lossless single-track dual-layer profile 7 files.
look at the end of this excel sheet, all the profiles are explained:
https://docs.google.com/spreadsheets/d/ ... sp=sharing
you get a lossless single-track dual-layer profile 7 files.
1- FEL data is the difference between the 12bits master and the 10bits encode.
When dealing with DV Profile 7, you have a Base Layer and an Enhancement Layer.drew_nickel wrote: ↑Tue Apr 26, 2022 7:35 pm1.) Is the reason the FEL layer file size is so much bigger than the MEL version because the FEL contains 12bits of color data, which has exponentially more color data than the 10bit MEL version?
The FEL just contains the 2-bits of diff between a 12-bit master and 10-bit BL. It's recombined with the BL in a proprietary DV process to recreate a 12-bit 2160p signal from a 10-bit 4K BL + a 10-bit 1080p EL, so you don't need to worry about the video specs too much. The EL video stream isn't be displayed directly, so the specs aren't really relevant. It's using 10-bits of color @ 1080p resolution to represent 2-bits of color @ 2160p resolution. They used a proprietary hack to stuff the 2-bits of data they needed into an existing video format, 10-bit 1080p HEVC video.drew_nickel wrote: ↑Tue Apr 26, 2022 7:35 pm2.) If the mediainfo for a certain movie says this about the FEL layer:
MPEG-H HEVC Video 7564 kbps (10.95%) 1080p / 23.976 fps / 16:9 / Main 10 @ Level 5.1 @ High / 4:2:0 / 10 bits / 1000nits / Dolby Vision FEL / BT.2020
Doesnt it mean the FEL is basically pointless since it was Mastered in 1000nits and 10bit?
The RPU contains trim data — adjustments for different brightness displays — often for 100nits (SDR) and 600nits. When your device's EDID indicates an 800nit max, the 100nit and 600nit trims are used to produce a picture that's as close as possible to the 10000nit or 4000nit or 1000nit master.drew_nickel wrote: ↑Tue Apr 26, 2022 7:35 pm3.) I have a CX (700-800 nits max). Since my display wont even go over 1000 nits (no where even close to 4,000 or 10,000) would I benefit at all from having a DV player capable of playing Dual layer FEL? or would the player basically output the same thing as the single layer MEL version?
Sorry , no, that was only a news from Ugoos . It it not out yetmattmarsden wrote: ↑Mon Apr 25, 2022 12:57 pmDo you know where I can download the firmware from?Mattl0 wrote: ↑Sat Apr 23, 2022 5:04 pmAnyone tried the 5.0 fw from Ugoos on am6 b? Wonder how’s the dv playback. I will test it when I have time (currently the unit is somewhere, need to find it lol) .
F9220A1F-B95D-4B07-83FB-19CFD5159257.pngC8E9B873-8502-4BDF-B4FD-3602ACEBADDC.pngA594274E-B3FB-4A57-91F1-051FBD0A3621.jpeg
Yeah I noticed the 100Mbps port spec just now... Such a shame. I really wanted to find a way for playing the movie files on the x700 without having to physically move the hdd back and forth between the bluray player and my pc.FubbAyH wrote: ↑Thu Apr 28, 2022 5:18 pmIt could theoretically work if the router has the feature of running as a DLNA server to serve the files on the device plugged into its USB port. But, according to @RESET_9999's excellent playback devices info spreadsheet, there's a problem that the x700 only has slow 100Mbps ethernet and slow wi-fi, so it will struggle with high bitrate movies (which are common with UHD Blu-ray rips), so it's better to plug the USB device straight into the x700.
Yes! great explanation @nekno! Thank you guys for helping me understand it. Thank you too @reset for all your help! Your scripts are excellent! I use your method and I also use @yusesope's and I've been making alot excellent and flawless conversionsRESET_9999 wrote: ↑Thu Apr 28, 2022 2:05 pmgreat explanation @nekno
I'll pin your comment in the excel sheet. thanks
Kudos indeed for your clear explanation, nekno.
Thank you for an interesting read, complimentary to the very useful post viewtopic.php?p=85181#p85181 about DoVi tracks/layers by yusesope.nekno wrote: ↑Thu Apr 28, 2022 5:25 am…
The RPU contains trim data — adjustments for different brightness displays — often for 100nits (SDR) and 600nits. When your device's EDID indicates an 800nit max, the 100nit and 600nit trims are used to produce a picture that's as close as possible to the 10000nit or 4000nit or 1000nit master.
That will be true with either an MEL or FEL.
…
The short answer: Because that's what the DV spec specifies for P7. It was just a choice to make it work within the UHD BD spec, for efficiency and bandwidth. You only need to encode 2 bits of color data in the EL; you don't need a full 2160p 10-bit stream for that. Moreover, decoding two simultaneous 2160p60 HEVC streams @ 130Mbps requires twice the throughput of the overall system as compared to a single stream. Lowering the max EL down to 1080p60 @ 70Mbps lessens those hardware/software constraints considerably (from 2x to ~1.5x for the coded picture, and from 2x to 1.25x for the decoded picture).ArArdin wrote: ↑Fri Apr 29, 2022 3:59 pmCould you explain why the enhancement layer is always shown as 1080p and not in 4K resolution?
I can imagine it's just extra sub-sampling into a smaller footprint for compression efficacy. Where I wonder if this would be possible because the data itself is differential, and/or the source being encoded in 4:2:0 color subsampling.
Any thoughts?