Dolby Vision now possible through MP4 Mux.

[RESET_9999]

Separate question, converting p7 FEL to p8 MEL I understand the FEL is lost, but reading some recent pages I learned of dovi_baker tool. Can this be used to bake in the lost portion only so the conversion is lossless to p8 FEL and flags DV when played?

yes but it requires re-encoding.

Edit: Forgot to ask, for DV rpus, is generation via resolve always better than cm_analyze

latest Resolve and CM use the same 2023 new algo

So the current dolby_vision_stuff is not current for this device? All the things that make dv suck through fire stick apply even if using Queitvoid's kodi on p7?

I just tried the newest Fire Tv and nothing changed regarding DV. Same issues and same stuttering with high bitrate video. I also could not get DTSHD nor TrueHD passthrough to work, all I got is LPCM like the old firetv.
I noticed that PLEX added support for Profile 7 (in the first gen too).

if using Queitvoid's kodi on p7?

yes

[tjayz]

yes but it requires re-encoding.

Is there a guide buried in this thread somewhere that covers this?

latest Resolve and CM use the same 2023 new algo

To be clear, the two yield the exact same quality rpu no scene detect advantage or anything else?

Same issues and same stuttering with high bitrate video. I also could not get DTSHD nor TrueHD passthrough to work, all I got is LPCM like the old firetv.

I might order this and give it a test and return if it sucks as described, as it seems strange they boast passthrough yet you are getting lpcm which has no atmos.... If passthrough did work and one gains cmv 4.0 , and if can somehow tweak those stutters this is a very appealing device. I can't help but think those stutters are related to onboard wifi issues, maybe using AC or even N signal would be more stable than AX.

[RESET_9999]

To be clear, the two yield the exact same quality rpu no scene detect advantage or anything else?

original scene cuts in CM is better but the difference is not big.

Is there a guide buried in this thread somewhere that covers this?

if you use the dovi_scripts, it's not too complicated.

automated: workflow 8-6-2
manual (with staxrip or in cli x265.exe):
1. workflow 7-1 in manual mode.
2. edit the avs script: remove the text overlay and uncomment convertbits(10)
3. convert the rpu to p8.
4. encode the avs file just like any HDR video file(with the rpu or inject it after the encode).

I might order this and give it a test and return if it sucks as described, as it seems strange they boast passthrough yet you are getting lpcm which has no atmos.... If passthrough did work and one gains cmv 4.0 , and if can somehow tweak those stutters this is a very appealing device.

not worth it.
Not true TV-LED and no 24fps support. DV MKV works great but most of my TS/M2TS give me a green or black screen. The Shield also stopped working with DV TS.

The ATV is the best solution for DV MKV rip IMO... Plus the TS/M2TS rip works (cant be FF/RW or resumed though)
And when Infuse will (I hope) add cmv4.0 support, it will be even better.

I can't help but think those stutters are related to onboard wifi issues, maybe using AC or even N signal would be more stable than AX.

its not a wifi issue. I tried the AC ethernet adaptor and it keeps buffering with the high bitrate test file.

[tjayz]

Per device description the Ethernet would be limited to 100mbs.

Nothing would resolve the TV-LED 24fps issues though. Maybe next gen cube will get it right.

Edit: Also per device description "Audio Support Dolby Atmos, 7.1 surround sound, 2-channel stereo, and HDMI audio pass through up to 5.1" if trying to pass through 7.1 and output 7.1 I think it would force lpcm, if trying to output 5.1 though think it might work, otherwise makes 0 sense lol

[quietvoid]

Not true TV-LED and no 24fps support.

The new stick 4K Max 2nd edition (2023) does do 24 fps now.
But not much has changed otherwise, though others report all lossless passthrough to work with Kodi.

According to Plex it's supposed to support DTS too.

[RESET_9999]

good to know that it finally supports 24hz in plex/kodi

I only tried DTSHD 7.1 and TrueHD 7.1 in PLEX so as tjayz said , that might be the reason why if only 5.1 channels are supported via HDMI passthrough.

[djanvi2020]

question,

I don't know if this was asked before or not, im just getting back into reconverting with the new features of the scripts, when you convert Atmos to DD+ is there a way you can up the bitrate of the DD+ conversion in the Dolby Script?

Thanks!

[skull88]

question,

I don't know if this was asked before or not, im just getting back into reconverting with the new features of the scripts, when you convert Atmos to DD+ is there a way you can up the bitrate of the DD+ conversion in the Dolby Script?

Thanks!

I'll let RESET answer as to why this may not be possible with current script, but from my extensive research over the years into audio bitrates and codecs, any perception of difference in audio quality, as you hit diminishing returns for a codec (e.g. V0 MP3, highest compression low FLAC bitrate, 640kbps DDP, etc.) is almost entirely attributable to placebo effect and confirmation bias. This was true back in the day of DTS vs. Dolby debates and DVD media, and it's true today with nearly all cases of audio encoding. Obviously TrueHD Atmos is going to be better if you are able to play it on a suitably high-end system when compared to an AC3 core or streaming DD+ audio, but the same frequency distribution transcoded from TrueHD Atmos or DTS-HD -> DD+ will sound the same as long as it's not below 640kbps, if you did an ABX comparison (blind test), and the script encodes to 1024kbps or higher, so it's perfectly fine. That's my 2 cents.

[RESET_9999]

question,

I don't know if this was asked before or not, im just getting back into reconverting with the new features of the scripts, when you convert Atmos to DD+ is there a way you can up the bitrate of the DD+ conversion in the Dolby Script?

Thanks!

All the workflows encode @ 1024kbps for 7.1(EAE ) and 1536kbps for 5.1 (FFmpeg). You can disable 7.1 encodings (line 20) to get 1536kbps from any lossless source. If you delete the EAE folder, it's the same as setting line 20 to NO.
It's possible to encode 7-1 @ 1536kbps with an AC3 core in the DEE workflows but I find the quality quite bad. FFmpeg and EAE produce better(noticeable) quality IMO.

[Yoshitaka]

Which workflows would be best to convert this mkv to mp4 for C9 playback?
I'd like to keep audio highest quality possible.
I know that LG C9 has issues playing TrueHD.. Eac3 doesn't always sound the best, and the pcm conversion does? Is that right?
Should I change this to DT DL P7? Or perhaps single layer P8? Differences in video look or is it the same?

Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5.1@High
HDR format : Dolby Vision, Version 1.0, dvhe.07.06, BL+EL+RPU, Blu-ray compatible / SMPTE ST 2086, HDR10 compatible
Codec ID : V_MPEGH/ISO/HEVC
Duration : 2 h 43 min
Bit rate : 56.4 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 2)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.283
Stream size : 64.3 GiB (95%)
Language : English
Default : No
Forced : No
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color primaries : Display P3
Mastering display luminance : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level : 997 cd/m2
Maximum Frame-Average Light Level : 382 cd/m2
Original source medium : Blu-ray

Audio
ID : 2
ID in the original source medium : 4352 (0x1100)
Format : MLP FBA 16-ch
Format/Info : Meridian Lossless Packing FBA with 16-channel presentation
Commercial name : Dolby TrueHD with Dolby Atmos
Codec ID : A_TRUEHD
Duration : 2 h 43 min
Bit rate mode : Variable
Bit rate : 3 123 kb/s
Maximum bit rate : 5 211 kb/s
Channel(s) : 8 channels
Channel layout : L R C LFE Ls Rs Lb Rb
Sampling rate : 48.0 kHz
Frame rate : 1 200.000 FPS (40 SPF)
Bit depth : 24 bits
Compression mode : Lossless
Stream size : 3.57 GiB (5%)
Title : Surround 7.1
Language : English
Default : Yes
Forced : No
Original source medium : Blu-ray
Number of dynamic objects : 11
Bed channel count : 1 channel
Bed channel configuration : LFE

[RESET_9999]

1. if it's fel and expands brightness or improves details: MP4 version + workflow 4-3

2. mel or fel that doesn't touch brightness or details: MP4 or TS version + workflow 4-2

the MP4 version always encode DDP for any lossless audio but if your file has DTS, I think the C9 supports playing the core so that might be better than DDP. TrueHD will not work and PCM is downgraded to 2 channels IIRC.

[Yoshitaka]

Would there be a benefit to doing a TrueHD to DTS-HD MA conversion in that case vs EAC3?

[RESET_9999]

The core in a DTS-HD7.1 track is only 5.1 so if you have a 7.1 audio system, DDP may be better.

[Yoshitaka]

Ok, and FLAC doesn't work with DV MP4's? Does it have undesirable results perhaps and EAC3 is just the better or best option?

[RESET_9999]

I'm not sure.

Here's an audio test file if you want to try: https://drive.google.com/file/d/1wRlklh ... drive_link