[DoVi_Scripts] Multi-Function Scripts for Dolby Vision processing and a lot more...

[en6ads]

Originally Posted by prudentavocado

Damn, so what do you choose? I suppose whatever looks pleasing to the eyes on your display?

I guess p8 remux > p5 > p8 encode

There is one other option: Mode 8-2-6. With DEE you could transcode P7 FEL (12-bit YCbCr) to P5 (10-bit ICtCp, about 11.5-bit YCbCr equivalent).

However with lossless TIFF it takes absolutely ages and massive amounts of disk space. But it retains the 12-bit FEL (almost), and can have the same high encode rate of the UHD.

I have yet to encode a full movie using this method, only 10 minute chunks. But the result is really good. If you have a home server with loads of disk space I can recommend at least trying it.

[Kuler087]

You can also encode any DV source to P7 (FEL or MEL) with the latest beta(workflow 8-2-7). Add these x265 plugin to your DEE folder. You also need to replace \DoVi_Scripts\tools\DEE\python_scripts\encode_dvmezz_to_dv7.py

::8-2-7 profile 7 encoding mode. (default= no_mapping_with_fel) Choices are: 'no_mapping_with_mel', 'no_mapping_with_fel', 'map_to_1000_nits_with_fel', 'map_to_1000_nits_with_mel', 'map_to_600_nits_with_fel'
set usecase=no_mapping_with_fel
::BL bitrate in 8-2-7 P7 FEL encoding
set BL_rate=25000
::BL buffer in 8-2-7 P7 FEL encoding
set BL_buff=99000
::EL bitrate in 8-2-7 P7 FEL encoding. MEL bitrate / buffer is hardcoded to 500 / 550
set EL_rate=3000
::EL buffer in 8-2-7 P7 FEL encoding. MEL bitrate / buffer is hardcoded to 500 / 550
set EL_buff=5000

[prudentavocado]

Originally Posted by en6ads

There is one other option: Mode 8-2-6. With DEE you could transcode P7 FEL (12-bit YCbCr) to P5 (10-bit ICtCp, about 11.5-bit YCbCr equivalent).

Hmm, I guess I would have just assumed this is what the streaming services are already doing

[Kuler087]

Well, streaming services get the 12 or 10 bit mezzanine source from the studios; they don't convert P7 FEL to P5.

[Gigabit]

Hi,

Have you considered using http://avisynth.nl/index.php/LSMASHSource when doing the baking via DoViBaker as I believe this supports Intel Quick Sync?

[Kuler087]

No sorry man, I'm not really interested in adding a third frame indexer in the encoder workflows.

[Gigabit]

Originally Posted by Kuler087

No sorry man, I'm not really interested in adding a third frame indexer in the encoder workflows.

Is there a way I can use it manually? Can I edit the script at the end to use it?

[Kuler087]

Originally Posted by Gigabit

Is there a way I can use it manually? Can I edit the script at the end to use it?

The Script Workflow 8-2 would be complicated to edit manually because it includes a lot of other options, but you can simply follow the dovi_baker instructions, it’s not too complicated.

https://github.com/erazortt/DoViBaker

[Gigabit]

Originally Posted by Kuler087

The Script Workflow 8-2 would be complicated to edit manually because it includes a lot of other options, but you can simply follow the dovi_baker instructions, it’s not too complicated.

https://github.com/erazortt/DoViBaker

I had a look at your script and it seems to be doing a lot more than DoViBaker so I wondered if you were doing something extra?

I am trying to "bake" a FEL movie ("Saving Private Ryan").

I have the MKV of the source movie. From what I can understand, I need to load this into `dovi_tool` and use:

- extract-rpu to extract the RPU
- demux to output the base layer and enhancement layer as separate files

From what I can see, I then provide these files to `DoViBaker` via an AviSynth/AviSynth+ script:

bl = LWLibavVideoSource("bl.hevc", format="YUV420P10", stream_index=0)

el = LWLibavVideoSource("el.hevc", format="YUV420P10", stream_index=1)

DoViBaker(bl, el, rpu="RPU.bin")

Is that...it?

[Kuler087]

yes pretty much. Lsmash and ffms2 can read the rpu from the stream so you only need

bl = LWLibavVideoSource("bl.hevc", format="YUV420P10", stream_index=0)

el = LWLibavVideoSource("el.hevc", format="YUV420P10", stream_index=1)

DoViBaker(bl,el)

but this output will be 16bit RGB PQ. You have to convert it to YUV420P10 bt2020 then feed that script to the encoder.

[Gigabit]

Originally Posted by Kuler087

yes pretty much. Lsmash and ffms2 can read the rpu from the stream so you only need

bl = LWLibavVideoSource("bl.hevc", format="YUV420P10", stream_index=0)

el = LWLibavVideoSource("el.hevc", format="YUV420P10", stream_index=1)

DoViBaker(bl,el)

but this output will be 16bit RGB PQ. You have to convert it to YUV420P10 bt2020 then feed that script to the encoder.

Thanks mate, how do I do the conversion?

[Kuler087]

ConvertBits(10)
ConvertToYUV420(matrix="2020")

[Colek]

Just a small bug report - if filename contains an exclamation mark, at least in the Mode 1 it will be incorrectly reported as HDR10 only.

Had an issue figuring it out with one of the files, after renaming it, it worked just fine and detected P7.

[Kuler087]

right input with ! will never work in any workflow because it's used to delimit a variable.

for %%i in (!video_path!) do set filename=%%~ni
for %%i in (!video_path!) do set filepath=%%~di%%~pi
for %%i in (!video_path!) do set fileext=%%~xi

[prudentavocado]

Bit rate                       : 23.1 Mb/s
Mastering display luminance    : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level    : 305 cd/m2
Maximum Frame-Average Light Le : 10 cd/m2

Bit rate                       : 18.0 Mb/s
Mastering display luminance    : min: 0.0001 cd/m2, max: 1000 cd/m2
Maximum Content Light Level    : 1000 cd/m2
Maximum Frame-Average Light Le : 928 cd/m2

Trying to decide between two P8 proper group encodes (both should be from the UHD blu ray as primary video source), mostly similar but noticed this one difference in the light levels, should I put much stock into these values for P8s?

[Kuler087]

just measure the video in 6-2 without letterbox and edit it to the right values with workflow 9-9

[Enet47]

Only found out about this wonderful tool yesterday. It took me a minute to find out then work out how to use it. But I've finally converted my first FEL mkv to DV 8.1 Question: How do I check that it actually worked?

[Kuler087]

You can do some screenshot comparisons in Workflow 7-2 or 7-1

[Enet47]

Originally Posted by Kuler087

You can do some screenshot comparisons in Workflow 7-2 or 7-1

Thanks. Hopefully my final dumb question. I get that there is a list of FEL files that can't be converted without baking FEL into BL. But does that mean that I can convert the other DV FEL files to 8.1 without loosing FEL?

[Kuler087]

You always lose FEL when re-encoding to Profile 8. When you bake FEL, you retain all bitrate, grain, brightness, and any differences relative to the BL but the 12bit depth precision is lost forever.
You should always bake FEL when re-encoding, regardless of whether FEL makes a visible difference in that specific title. It does not slow down processing, so there is no reason not to bake it.