Dolby Vision now possible through MP4 Mux.
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Re: Dolby Vision now possible through MP4 Mux.
@ragico just tested and it's working in MP4 P8 DVH1 + LPCM audio.
sample: https://drive.google.com/file/d/1lsSQUU ... sp=sharing
so we dont have to use fake P5 on the ATV, this is great news.
Apple native player = DV with rpu working
PLEX = DV but rpu not working
Infuse = HDR10
sample: https://drive.google.com/file/d/1lsSQUU ... sp=sharing
so we dont have to use fake P5 on the ATV, this is great news.
Apple native player = DV with rpu working
PLEX = DV but rpu not working
Infuse = HDR10
Sorry for my English.
DoVi_Scripts / DoVi Playback Devices / Movies HDR-DV Plot / Screenshot Comparisons
DoVi_Scripts / DoVi Playback Devices / Movies HDR-DV Plot / Screenshot Comparisons
Re: Dolby Vision now possible through MP4 Mux.
I don't know what the mp4 headers should be, so I just let those tools to decide.RESET_9999 wrote: ↑Mon Jul 18, 2022 1:28 pmah, I know why my lpcm track didn't work on the ATV (video and lossy audio were ok).
My mp4 headers depending on my command line were:
What's that? Will that cause a problem in DV play? If it doesn't affect final image, I wouldn't bother to change it.RESET_9999 wrote: ↑Mon Jul 18, 2022 1:28 pmThe only problem I see with this method is that the static MDL metadata seems messed up now.
Re: Dolby Vision now possible through MP4 Mux.
Like I posted last monthRESET_9999 wrote: ↑Mon Jul 18, 2022 3:15 pm@ragico just tested and it's working in MP4 P8 DVH1 + LPCM audio.
But fake p5.dvh1 is the most stable way, it guarantee DV play.
Besides there are official release use fake p5.dvh1(those Apple TV screensaver).
And I've never seen p8 with dvh1 except from my experiment result.
So I think it's better for us to just stick to fake p5.dvh1 for now.
Also p8.dvh1 seems to let Apple think it's an HLG, video significantly darker than normal on my iPad.
p7.dvh1 play properly. Let's not make this even more complicated.
Last edited by sw5163 on Mon Jul 18, 2022 6:40 pm, edited 3 times in total.
Re: Dolby Vision now possible through MP4 Mux.
Do you know a way to generate "PCM joint object coding"?
You are the professional here.
Or is there indeed no public way except in Dolby Lab they can generate that?
I think this is possible because there are sound systems can receive "PCM/atmos".
And Apple tv actually decode EAC3/atmos and re-encode to PCM/atmos to pass to sound system.
So I figure if I provide PCM/atmos that is already decoded to ATV, it will "passthrough" that, and we get lossless/atmos.
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Re: Dolby Vision now possible through MP4 Mux.
Guys can i do ts file dolby vision with ts muxer nightly for native tv player LG OLED 2018 from blu ray bdmv dolby vision ?
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Re: Dolby Vision now possible through MP4 Mux.
sorry, your post was about an ipad and sdr output, I didnt give much attention to it back then.Like I posted last month
mp4box with following command can also get dolby vision to work:
mp4box -add BL_RPU.hevc -new p5.dvh1.mp4
mp4box -add BL_RPU.hevc:dv-profile=8.1 -new p8.hvc1.mp4(this doesn't work, it's a SMB bug)
mp4box -add BL_RPU.hevc:dv-profile=f8.1 -new p8.dvh1.mp4
I disagree, I prefer using a format that follows Dolby's specifications.But fake p5.dvh1 is the most stable way, it guarantee DV play.
Besides there are official release use fake p5.dvh1(those Apple TV screensaver).
And I've never seen p8 with dvh1 except from my experiment result.
So I think it's better for us to not make this even more complicated and just stick to fake p5.dvh1 for now.
Apple products are stupid and always does stuff differently, I learned to never trust them.
I did not change the headers!I don't know what the mp4 headers should be, so I just let those tools to decide.
but when you import LPCM audio to an existing DV mp4 with mp4box, the headers are not the same and the pcm audio no longer works on AppleTV.
That's the mastering display luminance specs. I don't know if it affects the final image but it can easily be fixed, see quietvoid's reply.What's that? Will that cause a problem in DV play? If it doesn't affect final image, I wouldn't bother to change it.
Sorry for my English.
DoVi_Scripts / DoVi Playback Devices / Movies HDR-DV Plot / Screenshot Comparisons
DoVi_Scripts / DoVi Playback Devices / Movies HDR-DV Plot / Screenshot Comparisons
Re: Dolby Vision now possible through MP4 Mux.
p8.dvh1 contrast is wrong on my iPad, if ATV can handle it, okay then.RESET_9999 wrote: ↑Mon Jul 18, 2022 6:46 pmI disagree, I prefer using a format that follows Dolby's specifications.But fake p5.dvh1 is the most stable way, it guarantee DV play.
Besides there are official release use fake p5.dvh1(those Apple TV screensaver).
And I've never seen p8 with dvh1 except from my experiment result.
So I think it's better for us to not make this even more complicated and just stick to fake p5.dvh1 for now.
I agree.RESET_9999 wrote: ↑Mon Jul 18, 2022 6:46 pmApple products are stupid and always does stuff differently, I learned to never trust them.
Thanks for the explanation!RESET_9999 wrote: ↑Mon Jul 18, 2022 6:46 pmThat's the mastering display luminance specs. I don't know if it affects the final image but it can easily be fixed, see quietvoid's reply.
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Re: Dolby Vision now possible through MP4 Mux.
oh indeed, that could be a problem... since your ipad output SDR, could you take screenshots that show the difference?
thanks
@ragico, could you compare the P5 and P8 version of the SM clip please?
Sorry for my English.
DoVi_Scripts / DoVi Playback Devices / Movies HDR-DV Plot / Screenshot Comparisons
DoVi_Scripts / DoVi Playback Devices / Movies HDR-DV Plot / Screenshot Comparisons
Re: Dolby Vision now possible through MP4 Mux.
To my eyes, P5 looks brighter and has more contrast.RESET_9999 wrote: ↑Mon Jul 18, 2022 7:49 pm@ragico, could you compare the P5 and P8 version of the SM clip please?
Re: Dolby Vision now possible through MP4 Mux.
Sure.RESET_9999 wrote: ↑Mon Jul 18, 2022 7:49 pmoh indeed, that could be a problem... since your ipad output SDR, could you take screenshots that show the difference?
thanks
From Apple screen saver: (left p8.dvh1 right p5.dvh1) From your test sample: (left p8.dvh1 right p5.dvh1) These screenshots can stand for what I'm seeing.
Left image has very low contrast, looks definitely wrong.
But RPU are working on both.
So I guess Apple treat p8.dvh1 as HLG BL as they were shot by iPhone.
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Re: Dolby Vision now possible through MP4 Mux.
p8 clearly isn't tonemapped to SDR on those pic. (looks like PQ)
but since ragico report the same on the ATV, then I stand corrected.
but since ragico report the same on the ATV, then I stand corrected.
Sorry for my English.
DoVi_Scripts / DoVi Playback Devices / Movies HDR-DV Plot / Screenshot Comparisons
DoVi_Scripts / DoVi Playback Devices / Movies HDR-DV Plot / Screenshot Comparisons
Re: Dolby Vision now possible through MP4 Mux.
I'm not sure but Apple recognize them as HDR, see top left corner.RESET_9999 wrote: ↑Mon Jul 18, 2022 8:24 pmp8 clearly isn't tonemapped to SDR on those pic. (looks like PQ)
You may also wanna answer sergonnn111's question? He's been asking a several times.
sergonnn111 wrote: ↑Mon Jul 18, 2022 6:24 pmGuys can i do ts file dolby vision with ts muxer nightly for native tv player LG OLED 2018 from blu ray bdmv dolby vision ?
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Re: Dolby Vision now possible through MP4 Mux.
yeah I don't answer those questions anymore

All he has to do is to check the Playback Device sheet in my signature.
Sorry for my English.
DoVi_Scripts / DoVi Playback Devices / Movies HDR-DV Plot / Screenshot Comparisons
DoVi_Scripts / DoVi Playback Devices / Movies HDR-DV Plot / Screenshot Comparisons
Re: Dolby Vision now possible through MP4 Mux.
Right, @sergonnn111 maybe do more research before asking? I actually tested all profiles and codecs I could think of before posting the Apple MEL thing. I even tried to hybrid a p5.dvh1 and concat a FEL track to it to see if Apple indeed doesn't support FEL, LOL.RESET_9999 wrote: ↑Mon Jul 18, 2022 8:39 pmyeah I don't answer those questions anymore![]()
All he has to do is to check the Playback Device sheet in my signature.