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Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 12:47 pm
by susanstone2022
DMDreview wrote: Tue Jan 09, 2024 10:17 am
RESET_9999 wrote: Fri Dec 29, 2023 5:45 pm
ok, I'm starting to understand what's going on with the different RPU responses on players in TV-LED and in LLDV. It seems the x700/x800m2 almost completely ignores L1 and always tone map to the TV edid target.
Yes, oppo and all bluray UHD players change the PRU in TV-LED mode. they change the data from the RPU and then it goes to the TV.
Shield tv does not touch the PRU.
I will show in a video soon how it looks like in the video data from the RPU.
It would be nice to decode back from the binary code of the RPU video to see what changes there specifically. But I don't know how to do that
does this mean bluray UHD players should also be categorized as 'fake TV-led'?
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 1:17 pm
by aboulfad
DMDreview wrote: Tue Jan 09, 2024 12:32 pm
Yes, I am the author.
...
Is the EDID info shown using the TV itself or some other method (Pgenerator on rpi mentioned by RESET) ?
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 1:43 pm
by DMDreview
susanstone2022 wrote: Tue Jan 09, 2024 12:47 pm
DMDreview wrote: Tue Jan 09, 2024 10:17 am
RESET_9999 wrote: Fri Dec 29, 2023 5:45 pm
ok, I'm starting to understand what's going on with the different RPU responses on players in TV-LED and in LLDV. It seems the x700/x800m2 almost completely ignores L1 and always tone map to the TV edid target.
Yes, oppo and all bluray UHD players change the PRU in TV-LED mode. they change the data from the RPU and then it goes to the TV.
Shield tv does not touch the PRU.
I will show in a video soon how it looks like in the video data from the RPU.
It would be nice to decode back from the binary code of the RPU video to see what changes there specifically. But I don't know how to do that
does this mean bluray UHD players should also be categorized as 'fake TV-led'?
No, the TV still does the processing, but UHD players give it some hints based on EDID data from the TV itself.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 1:51 pm
by DMDreview
aboulfad wrote: Tue Jan 09, 2024 1:17 pm
DMDreview wrote: Tue Jan 09, 2024 12:32 pm
Yes, I am the author.
...
Is the EDID info shown using the TV itself or some other method (Pgenerator on rpi mentioned by RESET) ?
I don't quite understand what you mean. But as far as I know you can read EDID with the utility
https://entechtaiwan.com/util/moninfo.shtm.
Although I haven't tried it myself.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 2:15 pm
by aboulfad
Thanks I'll check out that tool. At 1'39" of your
video, there's a black info overlay but now that I look at it, it seems maybe from your capture card (would you mind sharing which card ?). I thought it showed EDID but actually has lots of video signal properties.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 2:44 pm
by DMDreview
aboulfad wrote: Tue Jan 09, 2024 2:15 pm
Thanks I'll check out that tool. At 1'39" of your
video, there's a black info overlay but now that I look at it, it seems maybe from your capture card (would you mind sharing which card ?). I thought it showed EDID but actually has lots of video signal properties.
Now understood. this very good site with edid decoder
https://hverkuil.home.xs4all.nl/edid-de ... ecode.html
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 2:53 pm
by aboulfad
That's also helpful but not what I am asking about. I was asking how did you get EDID info from your TV. I thought wrongly that signal info showed it in your video. RESET_9999 explained few pages ago & I wondered if you were using the
raspberry pi/Pgenerator. We can for now "forget about it" : )
PS: That moninfo tool didn't show anything useful (EDID) when I connected my Bootcamp/Mac to my LGTV via HDMI.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 3:11 pm
by DMDreview
aboulfad wrote: Tue Jan 09, 2024 2:53 pm
That's also helpful but not what I am asking about. I was asking how did you get EDID info from your TV. I thought wrongly that signal info showed it in your video. RESET_9999 explained few pages ago & I wondered if you were using the
raspberry pi/Pgenerator. We can for now "forget about it" : )
PS: That moninfo tool didn't show anything useful (EDID) when I connected my Bootcamp/Mac to my LGTV via HDMI.
device from hdfury can read ad save edid from tv
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 5:24 pm
by RESET_9999
aboulfad wrote: Tue Jan 09, 2024 2:53 pm
PS: That moninfo tool didn't show anything useful (EDID) when I connected my Bootcamp/Mac to my LGTV via HDMI.
Try to download your edid with CRU:
https://www.monitortests.com/forum/Thre ... tility-CRU
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 5:29 pm
by aboulfad
That's so funny, I just finished doing that but didn't find anything useful related to DV or HDR... I think it seems CRU depends on the GPU on the laptop (MacBook Pro 2018 i7, Intel Iris Plus Graphics 655) or the USB-C to HDMI Anker adapter , but unsure ! Grrr can't attach .txt ... or is it a quota issue.
Here's a
LINK to that text file decoded from the
site that @DMDreview shared.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 6:04 pm
by DMDreview
aboulfad wrote: Tue Jan 09, 2024 5:29 pm
That's so funny, I just finished doing that but didn't find anything useful related to DV or HDR... I think it seems CRU depends on the GPU on the laptop (MacBook Pro 2018 i7, Intel Iris Plus Graphics 655) or the USB-C to HDMI Anker adapter , but unsure ! Grrr can't attach .txt ... or is it a quota issue.
Here's a
LINK to that text file decoded from the
site that @DMDreview shared.
What is the size of the original EDID file, it feels like it is without the second 128 bytes. the size of the full EDID is 256 bytes.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 6:17 pm
by aboulfad
DMDreview wrote: Tue Jan 09, 2024 6:04 pm
What is the size of the original EDID file, it feels like it is without the second 128 bytes. the size of the full EDID is 256 bytes.
That is what I exported from CRU & decoded by that site, idk what you mean by original file unless the .bin file which is also 128bytes.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 6:23 pm
by DMDreview
aboulfad wrote: Tue Jan 09, 2024 6:17 pm
DMDreview wrote: Tue Jan 09, 2024 6:04 pm
What is the size of the original EDID file, it feels like it is without the second 128 bytes. the size of the full EDID is 256 bytes.
That is what I exported from CRU & decoded by that site, idk what you mean by original file unless the .bin file which is also 128bytes.
full edid BIN =256 bytes. You need read full EDID with extended data
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 6:27 pm
by RESET_9999
yes, I just tested with my C2 and if the display connected to the PC is not a certified DV monitor, the DV bloc is missing from CRU edid. A TV is not a certified DV monitor.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue Jan 09, 2024 6:29 pm
by aboulfad
^^^ Understood, though CRU has these following limitations & my MBP 2018 has most likely a dum & unsupported GPU. Oh RESET just discovered the mystery
Extension blocks:
GPU-specific limtations:
CRU can read extension blocks from displays connected to AMD and NVIDIA GPUs.
CRU can't read extension blocks with Intel GPUs or switchable graphics.
Older drivers or GPUs may only support up to 3 extension blocks.