Dolby Vision now possible through MP4 Mux.

[onlyauser]

Hello,

I have a Sony X900F and can't get it to play dolby vision videos converted with this tool. If I use --dv-profile 7 the videos are played but not Dolby Vision is triggered on the TV. If I use --dv-profile 5 the resulting videos are crashing the TV to a restart when played.
Dolby Vision Samples from ie. LG are playing fine though, but MediaInfo shows DV profile 5.09 on them. You mentioned profile 5.06 can be used, but when I put the parameter like --dv-profile 5.06 MediaInfo still shows DV profile 5.03. Can you please advise me how to put the --dv-profile paramter correct, so the resulting video has DV profile 5.06, or maybe better 5.09.
My input video is a DV BluRay Rip from Jurassic Park Falling Kingdom.

Regards OnlyAUser

[Grencola]

Hello,

I have a Sony X900F and can't get it to play dolby vision videos converted with this tool. If I use --dv-profile 7 the videos are played but not Dolby Vision is triggered on the TV. If I use --dv-profile 5 the resulting videos are crashing the TV to a restart when played.
Dolby Vision Samples from ie. LG are playing fine though, but MediaInfo shows DV profile 5.09 on them. You mentioned profile 5.06 can be used, but when I put the parameter like --dv-profile 5.06 MediaInfo still shows DV profile 5.03. Can you please advise me how to put the --dv-profile paramter correct, so the resulting video has DV profile 5.06, or maybe better 5.09.
My input video is a DV BluRay Rip from Jurassic Park Falling Kingdom.

Regards OnlyAUser

Sony TV's can't play dual layer video files in Dolby Vision, unfortunately. The test samples you tried are single layer files that can't be created without official dolby tools. Only certain TV models from LG, Vizio, and TCL can play dual layer dv files, otherwise you'll need either an Oppo 203 or the Chinese clone from bd-mod to play them properly.

[mike admin]

Guys, I'm trying to understand this thread, please help me out. If anyone can answer these:

Is it safe to assume that all DV-enabled UHD blu-ray discs use DV 7 profile MEL streams (double layer, EL with MEL). Are really all DV streams on UHD blu-rays MEL streams?

Am I right that there is an algorithm (public or confidential) to convert profile 7 MEL stream (BL+EL) to a single-layer profile 8 stream? If yes, is this true tat the conversion would be "lossless" in DV sense but would destroy HDR10 metadata for non-DV devices?

Are there any tools, public or private, capable of performing such conversion?

Are there any tools, public or private, capable of making both profile 7 (Dual Layer) and profile 8 (Single Layer) bit-streams out of the same source material?

Are there any sample files for the above-mentioned process, i.e. a single-layer and a double-layer (profile 7 MEL) DV streams representing the same video data and DV metadata?

Are there any DV reference decoders?

Thanks!

[Grencola]

Guys, I'm trying to understand this thread, please help me out. If anyone can answer these:

Is it safe to assume that all DV-enabled UHD blu-ray discs use DV 7 profile MEL streams (double layer, EL with MEL). Are really all DV streams on UHD blu-rays MEL streams?

Am I right that there is an algorithm (public or confidential) to convert profile 7 MEL stream (BL+EL) to a single-layer profile 8 stream? If yes, is this true tat the conversion would be "lossless" in DV sense but would destroy HDR10 metadata for non-DV devices?

Are there any tools, public or private, capable of performing such conversion?

Are there any tools, public or private, capable of making both profile 7 (Dual Layer) and profile 8 (Single Layer) bit-streams out of the same source material?

Are there any sample files for the above-mentioned process, i.e. a single-layer and a double-layer (profile 7 MEL) DV streams representing the same video data and DV metadata?

Are there any DV reference decoders?

Thanks!

You are indeed correct that all uhd-bd dv movies are dual layer profile 7. This thread discusses the process (which includes the use of this program: https://github.com/DolbyLaboratories/dlb_mp4base ) of essentially changing the container type from mkv or m2ts to mp4, which can then be played on certain models of select TV's (LG, Vizio, TCL) using usb / dlna. These files are still dual layer (profile 7 usually) which is why only certain models support playback of them. Unfortunately there are no public tools available to combine the two layers into a single layer file like the LG DV .ts sample videos. You would need Ateme Titan software running on an official Dolby CMU workstation with an up to date license to author such a process. But yeah, the result is still lossless video quality as no compressing is performed, and the hdr10 baselayer still remains for if your tv doesn't support DV it falls back to hdr10 instead of sdr. If you want to convert your uhd-bd backups (or mkv remux) to a DV mp4, I've made a tiny app to simplify the process: https://bit.ly/2WbHZR0
Just put your video file (largest .m2ts from the uhd-bd bdmv/streams folder or .mkv remux) into its own folder, run my app, point it to that folder, and click install.

[onlyauser]

Sony TV's can't play dual layer video files in Dolby Vision, unfortunately. The test samples you tried are single layer files that can't be created without official dolby tools. Only certain TV models from LG, Vizio, and TCL can play dual layer dv files, otherwise you'll need either an Oppo 203 or the Chinese clone from bd-mod to play them properly.

Thanks for clarification. Seems like I bet on the wrong horse.

Regards
onlyanuser

[mike admin]

These files are still dual layer (profile 7 usually) which is why only certain models support playback of them.

I understand that. But I wonder if the process to combine dual-layer to single-layer is relatively simple and can be reverse-engineered.
The public DV docs state that MEL extension layer streams can be parsed and combined without instantiating secondary hevc decoder. The blu-ray players apparently do it in software on a relatively low-power SOCs. So the process has to be simple.

Unfortunately there are no public tools available to combine the two layers into a single layer file like the LG DV .ts sample videos. You would need Ateme Titan software running on an official Dolby CMU workstation with an up to date license to author such a process.

That's what I am looking for. All we need is a couple 10-second identical sample files, authored as UHD-BD profile 7 (double layer) and a signle-layer profile (profile 8?). If the combining process is indeed simile, the algorithm can be deduced just by analyzing the data. If anyone can provide such samples, I will not share them with anyone.

But yeah, the result is still lossless video quality as no compressing is performed, and the hdr10 baselayer still remains for if your tv doesn't support DV it falls back to hdr10 instead of sdr.

What DV profile are these files? And where can I get these LG DV single-layer sample files?

Are you saying that a single-layer "combined" DV file still retains HDR10 compatibility, even when played on a TV without DV support? This sounds really nice if it is true.

Thanks!

[Grencola]

I doubt reauthoring a dual layer uhd-bd to mux the bl+el+rpu into a single stream video file is as easy as you think. well, the process is easy enough (I could show you Chinese vid on YouTube showing it) but the acquisition of proprietary dolby hardware, software, and licenses makes it a bit more tricky..

here's a bunch of single layer DV test samples: https://drive.google.com/open?id=1mU-TJ ... Omgs8R3xLa

the reveal_more videos I believe have a bt2020 base so would default to hdr10 if a non dv tv is used, yeah. I'm sure many of them are this way actually, just the check the mediainfo.

these are not dual layer uhd-bd profile 7 clips that have been made into single layer files- those do not exist. these have been authored as single layer from the get go with permission from dolby. a bunch of these are available right from dolby's website.

let me know what you see / come up with!

good luck :p

[mike admin]

I doubt reauthoring a dual layer uhd-bd to mux the bl+el+rpu into a single stream video file is as easy as you think.

It has to be, it is designed that way. After all, it is just a metadata re-packaging.

here's a bunch of single layer DV test samples

Thanks!

these are not dual layer uhd-bd profile 7 clips that have been made into single layer files- those do not exist.

I wish we could find a sample...

[bgalakazam]

Grencola, I like your tool. It's still running, does it delete the origin file at the end? I wanted to give a test run to a DV with lossy audio on certain titles. I always preferred lossless audio to DV so I don't want to lose my origin file if I don't like it.

[Grencola]

Grencola, I like your tool. It's still running, does it delete the origin file at the end? I wanted to give a test run to a DV with lossy audio on certain titles. I always preferred lossless audio to DV so I don't want to lose my origin file if I don't like it.

Glad you like it Yes, it keeps the original file.
let me know what you think of the lossy audio! I found that unless you have a high-end speaker system, it's really not that much worse, while the difference from hdr10 to DV is immense depending on the film.

[deadchip12]

I’m having an issue with Dolby Vision movies on the c7. Black bars are perfect black, but the picture which is supposed to be perfect black is only dark grey. If I look closely, there are some kinda lines running diagonally. Not sure if the remuxing process causes this. The movie I’m testing is Rampage (2018). At the beginning of the movie where there are some white texts against a supposedly black background, the background is grey instead of black. This does not happen with the hdr10 version which is perfect black.

[Grencola]

I’m having an issue with Dolby Vision movies on the c7. Black bars are perfect black, but the picture which is supposed to be perfect black is only dark grey. If I look closely, there are some kinda lines running diagonally. Not sure if the remuxing process causes this. The movie I’m testing is Rampage (2018). At the beginning of the movie where there are some white texts against a supposedly black background, the background is grey instead of black. This does not happen with the hdr10 version which is perfect black.

that's strange, I know the C6 has DV issues but haven't heard much from C7 users. have you tried a different movie at all? you could also try dv profile 5 instead of 7, as LG is finicky with their DV processing..

[deadchip12]

I’m having an issue with Dolby Vision movies on the c7. Black bars are perfect black, but the picture which is supposed to be perfect black is only dark grey. If I look closely, there are some kinda lines running diagonally. Not sure if the remuxing process causes this. The movie I’m testing is Rampage (2018). At the beginning of the movie where there are some white texts against a supposedly black background, the background is grey instead of black. This does not happen with the hdr10 version which is perfect black.

that's strange, I know the C6 has DV issues but haven't heard much from c7 users. have you tried a different movie at all? you could also try dv profile 5 instead of 7, as LG is finicky with their DV processing..

I noticed this in other movies as well, like Justice League and Ready Player One. I will try dv profile 5 like you suggest and report back.

[deadchip12]

I’m having an issue with Dolby Vision movies on the c7. Black bars are perfect black, but the picture which is supposed to be perfect black is only dark grey. If I look closely, there are some kinda lines running diagonally. Not sure if the remuxing process causes this. The movie I’m testing is Rampage (2018). At the beginning of the movie where there are some white texts against a supposedly black background, the background is grey instead of black. This does not happen with the hdr10 version which is perfect black.

that's strange, I know the C6 has DV issues but haven't heard much from C7 users. have you tried a different movie at all? you could also try dv profile 5 instead of 7, as LG is finicky with their DV processing..

Update: I tried dv profile 5 instead of 7 and the file straight up refused to run lol.

I created the dolby vision file using the remux mkv version. I’m downloading the full disc version and will try remuxing again using the m2ts file to see if it makes any difference.

[bgalakazam]

Glad you like it Yes, it keeps the original file.
let me know what you think of the lossy audio! I found that unless you have a high-end speaker system, it's really not that much worse, while the difference from hdr10 to DV is immense depending on the film.

I tested with American Psycho and it wasn't as pronounced difference as I thought. Can you suggest me some titles?

I have a descent Klipsch 5.1 system with a SVS sub. The 640kbs limit is a little low for my liking. While I rarely hit the 20mbit with lossless, often it hangs around 3-5mbit. So no way to get DD+ with mp4 then and stuck to 640? It's not a show stopper as some Netflix titles I have seen are 192kbs but the DV was stunning.