Re: Dolby Vision now possible through MP4 Mux.
Posted: Mon Jul 18, 2022 6:24 pm
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 ?
MakeMKV support forum
https://forum.makemkv.com/forum/
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.
I did not change the headers!I don't know what the mp4 headers should be, so I just let those tools to decide.
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.
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 pm Apple 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 pm 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.
oh indeed, that could be a problem... since your ipad output SDR, could you take screenshots that show the difference?sw5163 wrote: Mon Jul 18, 2022 7:34 pm p8.dvh1 contrast is wrong on my iPad, if ATV can handle it, okay then.
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?sw5163 wrote: Mon Jul 18, 2022 7:34 pm p8.dvh1 contrast is wrong on my iPad, if ATV can handle it, okay then.
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?sw5163 wrote: Mon Jul 18, 2022 7:34 pm p8.dvh1 contrast is wrong on my iPad, if ATV can handle it, okay then.
thanks
I'm not sure but Apple recognize them as HDR, see top left corner.RESET_9999 wrote: Mon Jul 18, 2022 8:24 pm p8 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.sw5163 wrote: Mon Jul 18, 2022 8:21 pm But RPU are working on both.
So I guess Apple treat p8.dvh1 as HLG BL as they were shot by iPhone.
sergonnn111 wrote: Mon Jul 18, 2022 6:24 pm 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 ?
yeah I don't answer those questions anymoresw5163 wrote: Mon Jul 18, 2022 8:32 pm You may also wanna answer sergonnn111's question? He's been asking a several times.
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 anymoresw5163 wrote: Mon Jul 18, 2022 8:32 pm You may also wanna answer sergonnn111's question? He's been asking a several times.![]()
All he has to do is to check the Playback Device sheet in my signature.
yep, i tried that too in the Windows 10 app LOL.sw5163 wrote: Mon Jul 18, 2022 8:55 pm concat a FEL track to it to see if Apple indeed doesn't support FEL, LOL.
I don't know what that is either. I never used them, but seems everything is fine so far.RESET_9999 wrote: Mon Jul 18, 2022 9:43 pm about mp4box, I wonder if we should use:
-brand mp43isom -ab dby1
I have no idea what it does but i always used it with mp4box. I got that from yusesope a long time ago i think.
How do you decide what pcm encoder to use?RESET_9999 wrote: Mon Jul 18, 2022 12:45 am i tried:
-map 0:AUDIO_STREAM_ID -c pcm_s24be -ar 48000 -rf64 auto \path\to\audio.mov
and
-map 0:AUDIO_STREAM_ID -c pcm_s24le -ar 48000 -rf64 auto \path\to\audio.mov
I have no idea, I ended up using your command line in my script. I'm really not an expert with audio encoding.sw5163 wrote: Tue Jul 19, 2022 12:46 amHow do you decide what pcm encoder to use?RESET_9999 wrote: Mon Jul 18, 2022 12:45 am i tried:
-map 0:AUDIO_STREAM_ID -c pcm_s24be -ar 48000 -rf64 auto \path\to\audio.mov
and
-map 0:AUDIO_STREAM_ID -c pcm_s24le -ar 48000 -rf64 auto \path\to\audio.mov
My logic here is ffmpeg show:
Stream #0:2[0x1100]: Audio: truehd (AC-3 / 0x332D4341), 48000 Hz, 7.1, s32 (24 bit)
s32 (24 bit) I take that as 24 bit audio + 8 bit atmos
So would it be correct to use pcm_s24le or pcm_s32le? (little endian for compatibility I think)
If we are going to lose atmos anyway.
If we don't set -ar 48000 manually, will it chose proper sample rate automatically?
Also may I ask what does -rf64 auto mean?