davilla wrote: 21 Jul 2019, 12:32The thing I don't know if this is just a mappign issue and I can just remap "Lscr Rscr" to "Lb Rb"
I don't know either.
I've done some tests withe the Amaze (Lossless-ATMOS) demo (DL
HERE).
I've converted the Dolby Atmos track in PCM and then in ALAC.
Original PCM ######## (FL FR FC LFE BL BR SL SR ) (DL
HERE)
Intermediate PCM ##### (FL FR FC LFE BL BR FLC FRC) (DL
HERE)
ALAC ############# (FL FR FC LFE BL BR FLC FRC ) (DL
HERE)
I can show you how the LAV audio Decoder handle the output channels for the three files
I've performed also a channel mapping (from 0 to 7) for the Original PCM and for the ALAC file and I've extracted the 6th channel from both(SL for PCM, FLC for ALAC).
After a conversion in PCM (PCM -> PCM for the first one, ALAC -> PCM for the second one), I've hashed the two output file using the md5 algorithm and the result is the same:
so, SL == FLC
Code: Select all
ffmpeg.exe -i alac.alac -map_channel 0.0.6 -c:a pcm_s24le -ar 48000 -rf64 auto FLC.wav
ffmpeg.exe -i original_pcm.wav -map_channel 0.0.6 -c:a pcm_s24le -ar 48000 -rf64 auto SL.wav
I don't know if this can help you or it's totally garbage.
Today, I'm inspired so I have this for you (the video track and the audio track come from different sources):
Dolby Vision + DTS-HD MA
https://pcdn-my.pcloud.com/publink/show ... jXJbWbCAek
Code: Select all
Generale
Nome completo : Test_DV_DTS_HD_MA.mp4
Formato : MPEG-4
Nome commereciale : HDR10
Profilo formato : Base Media
ID codec : isom (isom)
Dimensione : 122MiB
Durata : 29s 737 ms
Modo bitrate generale : Variabile
Bitrate totale : 34,3 Mb/s
Data codifica : UTC 2019-07-21 09:42:46
Data : UTC 2019-07-21 09:42:46
Video
ID : 1
Formato : HEVC
Formato/Informazioni : High Efficiency Video Coding
Nome commereciale : HDR10
Profilo formato : Main [email protected]@High
Dolby Vision : 1.0, dvhe.05.06, BL+RPU
ID codec : dvhe
ID codec/Informazioni : High Efficiency Video Coding with Dolby Vision
Durata : 29s 737 ms
Bitrate : 28,7 Mb/s
Bitrate massimo : 102 Mb/s
Larghezza : 3.840 pixel
Altezza : 2.160 pixel
Rapporto aspetto visualizzazione : 16:9
Modalità frame rate : Costante
Frame rate : 23,976 (24000/1001) FPS
Spazio colore : YUV
Croma subsampling : 4:2:0 (Type 2)
Profondità bit : 10 bit
Bit/(pixel*frame) : 0.144
Dimensione della traccia : 102MiB (84%)
Data codifica : UTC 2019-07-19 07:46:14
Data : UTC 2019-07-21 09:42:46
colour_range : Limited
Colori primari : BT.2020
Caratteristiche trasferimento : PQ
Coefficienti matrici : BT.2020 non-constant
MasteringDisplay_ColorPrimaries : Display P3
MasteringDisplay_Luminance : min: 0.0001 cd/m2, max: 4000 cd/m2
MaxCLL : 3947 cd/m2
MaxFALL : 542 cd/m2
Codec configuration box : hvcC+dvcC
Audio
ID : 2
Formato : DTS XLL
Formato/Informazioni : Digital Theater Systems
Nome commereciale : DTS-HD Master Audio
ID codec : mp4a-A9
Durata : 29s 737 ms
Modalità bitrate : Variabile
Bitrate : 5.538 kb/s
Bitrate massimo : 7.330 kb/s
Canali : 8 canali
Channel layout : C L R LFE Lb Rb Lss Rss
Frequenza campionamento : 48,0 kHz
Frame rate : 93,750 FPS (512 SPF)
Profondità bit : 24 bit
Modo compressione : Senza perdita
Dimensione della traccia : 19,8MiB (16%)
Default : Si
AlternateGroup/String : 1
Data : UTC 2019-07-21 09:42:46
Code: Select all
Generale
Nome completo : Test_DV_DTS_X.mp4
Formato : MPEG-4
Nome commereciale : HDR10
Profilo formato : Base Media
ID codec : isom (isom)
Dimensione : 73,6MiB
Durata : 11s 427 ms
Modo bitrate generale : Variabile
Bitrate totale : 54,0 Mb/s
Data codifica : UTC 2019-07-21 09:54:07
Data : UTC 2019-07-21 09:54:07
Video
ID : 1
Formato : HEVC
Formato/Informazioni : High Efficiency Video Coding
Nome commereciale : HDR10
Profilo formato : Main [email protected]@High
Dolby Vision : 1.0, dvhe.05.06, BL+RPU
ID codec : dvhe
ID codec/Informazioni : High Efficiency Video Coding with Dolby Vision
Durata : 11s 427 ms
Bitrate : 47,3 Mb/s
Bitrate massimo : 102 Mb/s
Larghezza : 3.840 pixel
Altezza : 2.160 pixel
Rapporto aspetto visualizzazione : 16:9
Modalità frame rate : Costante
Frame rate : 23,976 (24000/1001) FPS
Spazio colore : YUV
Croma subsampling : 4:2:0 (Type 2)
Profondità bit : 10 bit
Bit/(pixel*frame) : 0.238
Dimensione della traccia : 64,5MiB (88%)
Data codifica : UTC 2019-07-19 07:46:14
Data : UTC 2019-07-21 09:54:07
colour_range : Limited
Colori primari : BT.2020
Caratteristiche trasferimento : PQ
Coefficienti matrici : BT.2020 non-constant
MasteringDisplay_ColorPrimaries : Display P3
MasteringDisplay_Luminance : min: 0.0001 cd/m2, max: 4000 cd/m2
MaxCLL : 3947 cd/m2
MaxFALL : 542 cd/m2
Codec configuration box : hvcC+dvcC
Audio
ID : 2
Formato : DTS XLL X
Formato/Informazioni : Digital Theater Systems
Nome commereciale : DTS-HD Master Audio
ID codec : mp4a-A9
Durata : 11s 422 ms
Modalità bitrate : Variabile
Bitrate : 6.717 kb/s
Bitrate nominale : 6.090 kb/s
Bitrate massimo : 9.370 kb/s
Canali : Object Based
Channel layout : Object Based
Frequenza campionamento : 48,0 kHz
Frame rate : 93,750 FPS (512 SPF)
Dimensione della traccia : 9,15MiB (12%)
Titolo : Surround 7.1
Lingua : Inglese
Default : Si
AlternateGroup/String : 1
Data : UTC 2019-07-21 09:54:07
Do They play fine?
Smells like a tvOS issue, with AVFoundation codec, we do nothing regarding decode/rendering. The AV Foundation is handling everything. Dare I ask if Infuse can play it correctly? you will not get Dolby Vision but it should play.
we can take a single layer dv mp4 from dvdfab and just swap the audio with the lossless one from the disc, minus atmos? I feel like I would have known about this if it worked, as it's always the old ac3, e-ac3, ac4, aac, flac, alac etc..