Search found 15 matches

by Mouth_of_Sauron
Fri Feb 22, 2019 10:20 pm
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

When I use the Dolby Vision MP4Muxer I find there is heavy HDD activity for a couple of minutes, then a long period of high CPU activity (but little HDD activity), followed by a final period of heavy HDD activity. It appears that it's doing more than a simple remux because of the long period of high...
by Mouth_of_Sauron
Thu Feb 21, 2019 5:58 am
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

seems like it should work as it remains lossless right up until eac3. I can already make eac3's in XMedia recode but I can't seem to find that surround blending I thought I saw. so your flac trick might be the ticket. and I can do it all from command line so I'd upgrade my code, and make it the ult...
by Mouth_of_Sauron
Thu Feb 21, 2019 1:35 am
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

OK, from what I can tell the following applies (correct me if I am wrong): eac3to will mix the back channels into the surrounds when creating a 5.1 track from a 7.1 original, however it doesn't appear to be able to encode to EAC3. So the best you can get is 640kbps AC3. Xmedia Recode can encode to 1...
by Mouth_of_Sauron
Thu Feb 21, 2019 12:35 am
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

When the core is lower than 640 kbps, the encoding is done from the uncompressed track - truehd/atmos, not from the core. So -core is not needed, only -640. Because if the core is already 640 kbps it will be extracted, but if it's lower e.g. 448 or even 224 (Hunter Killer) the output will be encode...
by Mouth_of_Sauron
Wed Feb 20, 2019 7:21 am
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

I think for higher bitrate eac3's XMedia Recode has a - ex tag where it folds in rear backs? I have to look again I can't remember. I wonder if it too can all be done from a command line because I would definitely change my program to use higher bitrate eac3 instead of lower ac3 and have better sou...
by Mouth_of_Sauron
Wed Feb 20, 2019 2:40 am
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

Like others, I'm hoping that in the future we might be able to get DV in MKVs. For this reason I'd like to be able to demux the DV MP4s in the future, but when I try tsMuxer doesn't recognise the DV stream so only demuxes the base video and audio. How can I demux a DV MP4 back out into the 3 indivi...
by Mouth_of_Sauron
Tue Feb 19, 2019 10:42 pm
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

You're partially correct however since dolby vision is a 12-bit video and the hdr10 track is only 10-bit I believe that dolby is merging both tracks to turn the 4K track from 10-bit to 12-bit using the dv layer track. The metadata is also there in that track. As for others finding that the dv track...
by Mouth_of_Sauron
Tue Feb 19, 2019 9:05 pm
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

fyi if you type eac3to.exe file_name.m2ts it will list all the tracks. hd-audio is always track 3 if there's dv, otherwise it's track 2.. you would just type: eac3to.exe 00005.m2ts 1: base.hevc 2: dv.hevc 3: audio.ac3 -core -core extracts the core audio, yes.. but naming it a .ac3 file means it wil...
by Mouth_of_Sauron
Tue Feb 19, 2019 8:05 pm
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

demux each track individually. tsmuxer is finicky. eac3to is way easier. put it in your m2ts folder and in cmd prompt just type: eac3to.exe 00005.m2ts 1: baselayer.hevc 2: dvlayer.hevc 3: audio.ac3 -core -640 it will convert the audio and everything all for you. then just use mp4muxer without those...
by Mouth_of_Sauron
Tue Feb 19, 2019 7:00 am
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

I accidentally put two different tracks from two different movies in makemkv and when I played the file in DV, I could see the second layer in the background with different picture. So I believe we get the metadata. I just did this on purpose to see what would happen. I couldn't see a whole differe...
by Mouth_of_Sauron
Tue Feb 19, 2019 6:57 am
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

I made a second attempt at getting this to work. This time, I used Black Panther UHD disk. I was able to demux the files successfully and run the same command as above. It created the mp4 successfully but Plex and/or the TCL r617 TV only recognizes the file as regular HDR10 content. I am throwing u...
by Mouth_of_Sauron
Mon Feb 18, 2019 8:07 pm
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

Like others, I'm hoping that in the future we might be able to get DV in MKVs. For this reason I'd like to be able to demux the DV MP4s in the future, but when I try tsMuxer doesn't recognise the DV stream so only demuxes the base video and audio. How can I demux a DV MP4 back out into the 3 individ...
by Mouth_of_Sauron
Mon Feb 18, 2019 8:00 pm
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

I accidentally put two different tracks from two different movies in makemkv and when I played the file in DV, I could see the second layer in the background with different picture. So I believe we get the metadata. That's very interesting. I didn't think the metadata would have visually appeared l...
by Mouth_of_Sauron
Mon Feb 18, 2019 7:55 pm
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

It may be possible to do the eyeball test. There are some UHD films which, based on reviews, have vastly improved experiences with DV over HDR10. If you can do a side by side or sample the same scene from the same movie in both formats on the same set, you may be able to see if there is a differenc...
by Mouth_of_Sauron
Sun Feb 17, 2019 8:52 pm
Forum: UHD discs
Topic: Dolby Vision now possible through MP4 Mux.
Replies: 614
Views: 96669

Re: Dolby Vision now possible through MP4 Mux.

I was reading a discussion on Reddit where a member comments that on his Oppo 203 when playing one of these MP4 DV remuxes it reports the video stream as 10-bit, however if he plays the same movie from a full disc copy (including BDMV folder) that it reports the video stream as 12-bit. https://www.r...