Dolby Vision now possible through MP4 Mux.

[ans40]

For dovi baking (8-6-1), are we required to crop to match the image aspect ratio? Aside from the black bars being left in, does not cropping affect the encoding?

One reason I ask is because I can't crop with an odd top/bottom number (263/263) on my video file, so I'm forced to crop with 264/264. Cropping with an odd number on my video file yields the error: "YUV image can only be cropped by mod 2" (https://forum.videohelp.com/threads/368 ... g-question). Which is fine if cropping is required, but if it isn't then I'd prefer to just not crop.

[RESET_9999]

For dovi baking (8-6-1), are we required to crop to match the image aspect ratio? Aside from the black bars being left in, does not cropping affect the encoding?

One reason I ask is because I can't crop with an odd top/bottom number (263/263) on my video file, so I'm forced to crop with 264/264. Cropping with an odd number on my video file yields the error: "YUV image can only be cropped by mod 2" (https://forum.videohelp.com/threads/368 ... g-question). Which is fine if cropping is required, but if it isn't then I'd prefer to just not crop.

No,
L5 is left untouched unless you crop or downscale.

[thirdmoon]

@RESET_9999

How do you make the comparison of SDR vs HDR in a single video?
As soon as I put SDR or HDR together in one video, one them just becomes dull.

[RESET_9999]

you have to tone map SDR to HDR first in 8-6-5
It is much better to compare SDR to HDR in an HDR container IMO because you leave HDR untouched and because SDR100nits doesn't need to be compressed as well, you get the actual difference:
https://slow.pics/c/H0VsYKjB

[Unknown]

Hi, When I try to convert a .mkv mono layer P7 with 2 atmos track English and French, When I select the option 5 - 3 it keeps me only the English track and ignores the French track I would like to keep, How can I keep the 2 track?

[noquarter1]

@Reset_9999

I appreciate all the work you've done on figuring out how to play P7 DV on various players. I noticed in your file that you don't mention the Panasonic UB820, which also has network/usb capabilities. Do you know if it's been tested? If not I'd be happy to test it to see if it works.

I've been successful in getting DV to trigger on my x800m2 playing ripped 4k UHD using your instructions. But when I try to play them, I always get stuttering in the playback. Sometimes it's worse than other times. DVD/480p plays back with no issues. Trying now to figure out where the problem lies, whether in my wifi (I don't think so, devices next to the x800m2 are getting >200 mbps download and my server is hardwired with >800 mbps upload), the server (I'm using an old computer, maybe it can't handle serving the 4k UHD file? But there's no transcoding, so I don't think it's this), or the x800m2 itself. I have a checklist that I'm going through today to try to eliminate possibilities (playing a file via usb, moving the wifi router, etc). Any suggestions are appreciated.

Thanks.

[RESET_9999]

Hi, When I try to convert a .mkv mono layer P7 with 2 atmos track English and French, When I select the option 5 - 3 it keeps me only the English track and ignores the French track I would like to keep, How can I keep the 2 track?

5-3?? you mean just 5 maybe?

Which container your output?

this line?
set mux_all_audio=YES

[RESET_9999]

@Reset_9999

I appreciate all the work you've done on figuring out how to play P7 DV on various players. I noticed in your file that you don't mention the Panasonic UB820, which also has network/usb capabilities. Do you know if it's been tested? If not I'd be happy to test it to see if it works.

I've been successful in getting DV to trigger on my x800m2 playing ripped 4k UHD using your instructions. But when I try to play them, I always get stuttering in the playback. Sometimes it's worse than other times. DVD/480p plays back with no issues. Trying now to figure out where the problem lies, whether in my wifi (I don't think so, devices next to the x800m2 are getting >200 mbps download and my server is hardwired with >800 mbps upload), the server (I'm using an old computer, maybe it can't handle serving the 4k UHD file? But there's no transcoding, so I don't think it's this), or the x800m2 itself. I have a checklist that I'm going through today to try to eliminate possibilities (playing a file via usb, moving the wifi router, etc). Any suggestions are appreciated.

Thanks.

if you can play this file smoothly, your wifi/network is fast enough. Personally, it works like a charm via the 5ghz wifi but my router is in the same room and I don't think I ever noticed a stutter or a dropped frame on my x800m2.
On the shield it's ridiculous. Even with the gigabit port, it drops frames constantly. The shield is really a garbage device.
https://drive.google.com/file/d/1j0mILN ... drive_link

I never tested the Panasonic UB820 but I heard it can't play DV via usb.

[Unknown]

Hi, When I try to convert a .mkv mono layer P7 with 2 atmos track English and French, When I select the option 5 - 3 it keeps me only the English track and ignores the French track I would like to keep, How can I keep the 2 track?

5-3?? you mean just 5 maybe?

Which container your output?

this line?
set mux_all_audio=YES

Sorry I got the wrong number, it's 4 -3, Here's an image, set mux_all_audio=YES, is set to YES

[RESET_9999]

ha yes, for the TS version, it won't get muxed because there's no code in the script to add a silent core for non-english audio.
So you'll have to do it manually unfortunately:

1- disable muxing: set MUX=NO
2- run your file in 4-3 , the script will encode a silent core for the English THD track and demux the P7 ST layers
3- change the script language to french
set english=NO
set french=YES
4- run the file again in 8-2-2 or 8-2-1, this will encode the silent core for the French track
5- mux BL + EL + THD(silent core) + subs

[Unknown]

ha yes, for the TS version, it won't get muxed because there's no code in the script to add a silent core for non-english audio.
So you'll have to do it manually unfortunately:

1- disable muxing: set MUX=NO
2- run your file in 4-3 , the script will encode a silent core for the English THD track and demux the P7 ST layers
3- change the script language to french
set english=NO
set french=YES
4- run the file again in 8-2-2 or 8-2-1, this will encode the silent core for the French track
5- mux BL + EL + THD(silent core) + subs

Works perfectly thank you

[HotFudge]

Hi Reset

From my understanding the colorist take their L1 Generated DV metadata and make adjustments to the L2 600/1000/2000 nits trims to get the desired look.
Is the L2 100nits auto adjusted or is it also manually generated?

The P5 rpu i have contain L1 DV metadata and L2 100nit trim and either do not match MDL, frames out of sync or even some are just static. Like inception!!

Would it then be better/cleaner to generate a Resolve rpu in all these cases? (Just keeping the L1 metadata ). And grab the bonus HDR10+ metadata at the same time from Resolve

And only keep a WEB DV if the MDl are close and also has L2 600 or 1000 or 2000 nits trims?

Cheers

[RESET_9999]

All the metadata levels are generated automatically by the Dolby Algo but then indeed, the trims are adjusted manually by the colorist for most of the movies. The 100nits trim is also adjusted manually because it's going to be delivered for the SDR bluray. The colorist can also blend shots together or copy L1/L2 from one shot to another.

I wouldn't be surprised if the movies with only a 100nits L2 trim were not edited manually though.

Would it then be better/cleaner to generate a Resolve rpu in all these cases? (Just keeping the L1 metadata ).

or better , use my script 3-1 and use the original scene cuts.

I personally go even further, I generate new L1 for movies without 600-1000trims that were done with the old cmv2.9 algo because the latest version of the algo with tunning is a lot superior IMO.
you can read about it here: https://professionalsupport.dolby.com/s ... uage=en_US

And only keep a WEB DV if the MDl are close and also has L2 600 or 1000 or 2000 nits trims?

static MDL metadata is not really important, what matters is the PQ and nits measurement comparisons as I do in my excel sheet.
https://docs.google.com/spreadsheets/d/ ... edit#gid=0

[HotFudge]

Would it then be better/cleaner to generate a Resolve rpu in all these cases? (Just keeping the L1 metadata ).
or better , use my script 3-1 and use the original scene cuts.

How do I use the original scene cuts with your script 3-1

I personally go even further, I generate new L1 for movies without 600-1000trims that were done with the old cmv2.9 algo because the latest version of the algo with tunning is a lot superior IMO.

looks like Resolve the way to go. Do you discard the L2 100nit when you generate L1 Resolve metadata? or only discard the L2 600-1000 trims?

Cheers

[RESET_9999]

How do I use the original scene cuts with your script 3-1

its all automated but read the instructions on the github webpage for more info: MODE.H (3)

looks like Resolve the way to go. Do you discard the L2 100nit when you generate L1 Resolve metadata? or only discard the L2 600-1000 trims?

The script discard 600-1000nits and keep 100nits by default but you can control which trims is kept or removed


::Choose if you want to remove the 100 L2 trim pass. (only valid for 1-1xml and 3-1) (require the dolby metafier) (default=NO)
set remove_100=NO
::Choose if you want to remove the 600 L2 trim pass.(only valid for 1-1xml and 3-1) (require the dolby metafier)(default=YES)
set remove_600=YES
::Choose if you want to remove the 1000 L2 trim pass.(only valid for 1-1xml and 3-1) (require the dolby metafier) (default=YES)
set remove_1000=YES