Dolby Vision now possible through MP4 Mux.

[quietvoid]

Ahhhh I didn't even think of that - does Total Recall or whatever that infamous one is - does the FEL look the same on that too where you can pretty much make out the entire image in the FEL alone?

I don't know, never seen the EL for that.

[staknhalo]

I don't know, never seen the EL for that.

Remember that problem I contacted you about that I was seeing for the NF DV8 files?

Same problem again, NF title again, but different NF title.

I'll break it down and show screenshots of what I'm talking about - sample files attached

The DV8 file shows artifacts - looks just like RPU misalignment artifacts to me (look at his face down the middle and the red square overlaying it) - it shows this way both on Windows with the DV extension installed, and on my DV capable Android TV - so it's not just a Windows thing



Now, if I demux the HEVC file in Dovi_Tool - that should leave me with a HDR10 BL only (and the separate EL) - which it seemingly does, and mediainfo seems to report the same - but look what happens when viewing this 'supposed HDR10 only' file - the same artifacts show up on playback - again this is both on Windows and Android TV that the HDR10 file shows what appear to be RPU artifacts when there should be no RPU info in the file at all



Now, if I playback either the DV8 or supposed only HDR10 file, in a non-DV capable player like VLC - look - no RPU artifacts at all!



Something has to be going on here, just like I noticed with the Community files (also saw this on a NF movie as mentioned) - and again - it's ONLY NF TITLES I see this bug on :/

Here are the files - 'DVBad.m4v' is the DV8 file as you get it - the '10Bad.m4v' file is the supposed HDR10 only hevc after run through Dovi_tool that should have no RPU info in it, but appears to still do

https://mega.nz/file/8L5l3AaZ#Q7NxdKLmJ ... bE-fiBbBVA

[RESET_9999]

the video look corrupted. The artifacts are present on MPC as well.
Which title is this exactly? I've never seen anything like this and I watched tons of P8 NF content.

[staknhalo]

the video look corrupted. The artifacts are present on MPC as well.
Which title is this exactly? I've never seen anything like this and I watched tons of P8 NF content.

MPC attempts to read and map DV metadata though, correct? For DV5 > SDR mapping IIRC? I think the issue is somewhere DV info is being left behind when it shouldn't be (either because the original files themselves are structured wrong or whatever) - and because these players parse DV info - they attempt to display it - where as players that do nothing with DV so the info is gibberish to them - they don't attempt to display it so don't

I'll DM you all the stuff I've noticed it in

Edit: I'm thinking of MPV for DV5 > SDR mapping, not MPC, my bad

[RESET_9999]

MPC attempts to read and map DV metadata though, correct?

No rpu used. I use madvr and it doesn't render the rpu at all.

[staknhalo]

No rpu used. I use madvr and it doesn't render the rpu at all.

Yeah I confused MPC and MPV

Edit: As mentioned in the DM - I think it is the files (metadata or something) are structured wrong or something - and that's why Dovi_tool doesn't remove it or whatever - because it's not looking for/removing data where it knows it shouldn't be? Because as mentioned in DM - one title was able to demuxed and playback fine with no artifacts - but only one file

I'm gonna forward that DM to quietvoid too

[RESET_9999]

I just tested that scene and no problem on my end. (MPC or windows DV player)

sdr tonemapped comparison:https://slow.pics/c/5k5CnO2V
original P8 (no issue) sample: https://drive.google.com/file/d/1lYkd0q ... share_link

[staknhalo]

I just tested that scene and no problem on my end. (MPC or windows DV player)

sdr tonemapped comparison:https://slow.pics/c/5k5CnO2V
original P8 (no issue) sample: https://drive.google.com/file/d/1lYkd0q ... share_link

Your file plays fine for me (edit with and without DV extensions installed)- so it's gotta be a version of authoring tools I'm using? ts_muxer and GPAC is it on my end?

[RESET_9999]

I used mkvextract to demux and mp4box (my script 7-1-1) to mux to mp4.

[staknhalo]

I used mkvextract to demux and mp4box (my script 7-1-1) to mux to mp4.

OK I'll try this later on (gotta make dinner) and report back

Sorry quietvoid

[Hellboy.]

it shows this way both on Windows with the DV extension installed, and on my DV capable Android TV - so it's not just a Windows thing

What DV extension and player you use to see DV on Windows?

[staknhalo]

it shows this way both on Windows with the DV extension installed, and on my DV capable Android TV - so it's not just a Windows thing

What DV extension and player you use to see DV on Windows?

https://www.microsoft.com/store/productId/9PLTG1LWPHLF

Install that and then either the Microsoft Movies & TV app or the new Windows Media Player (from the store only not the built in WMP)

It works with mp4 only not mkv and DV8 and DV5 only not DV7

Reset said he doesn't like the accuracy of it IIRC (not color/PQ accurate or something)

[tjreis2]

Hello @RESET_9999!

I have a question regarding the best way to playback DV FEL files. My setup is almost the same as yours (LG C2 and a Denon AVR) but i have a shield Pro.

I was wondering if upgrading to the x800m2 would be a good idea as it has FEL support but i was looking at previous posts and saw that the L1/L2 bugs affect this player.

Is there any difference between the two players for DV playback (besides the red push in the shield which I also see)? What is your current setup?

[staknhalo]

I used mkvextract to demux and mp4box (my script 7-1-1) to mux to mp4.

Hey - I tried just using mkvextract first just to A/B test what the problem might be - and had the same issue - but that led me to notice your test file that played fine for me is codec ID hev1 - whereas mine come out hvc1 - I thought mp4box only spits out hvc1 unless DV5? And that the Dovi mp4muxer is what spits out hev1?

quietvoid said it looked like decoder errors - and isn't the codec ID SW (hev1) vs HW (hvc1) based decode? And that's why on Apple hev1 stutters?

[RESET_9999]

I thought mp4box only spits out hvc1 unless DV5? And that the Dovi mp4muxer is what spits out hev1?

7-1-1 in my script doesn't not use the mp4muxer unless your input has 7.1 lossless audio. It's mp4box doing the muxing and the people that tested on the appletv did not complain about stuttering.
so the test file I sent you is from mp4box only.