Devices > Video Cards, Monitors, Televisions, and Projectors
madVR Subtitles in 3D movies
JimH:
Doesn't madVR work for you when you need 3D?
Ekpen:
--- Quote from: Hendrik on March 26, 2022, 02:38:40 am ---Please don't hijack threads.
We don't have any plans to work on 3D with JRVR.
--- End quote ---
Hello:
The topic here is 3D.
I am not hijacking this thread.
What I wrote here is relevant to the topic being discussed at the moment.
Thanks
George Omoregie.
tij:
--- Quote from: Ekpen on March 25, 2022, 05:45:27 pm ---Nvidia drivers support 3D better now than before, though I do not know if Intel and AMD gpus do support 3d..
--- End quote ---
Actually, Nvidia dumped support for 3D in their drivers years ago (you can still output as SBS or OU) ... heard Intel and AMD still support frame pack 3D but I cannot confirm it
--- Quote from: Ekpen on March 25, 2022, 05:45:27 pm ---Plex plays 3D
Kodi plays 3D
VLC plays 3D.
--- End quote ---
All of those use MadVR ... as does JRiver (EDIT: except Plex ... which require player/TV to natively support frame-pack 3D in format you are playing ... eg. if 3D is in framepack MKV and you playing it directly to TV ... then TV must support framepack MKV, which not many do)
--- Quote from: Ekpen on March 25, 2022, 05:45:27 pm ---3D is not "DEAD"
--- End quote ---
As much as I support 3D ... its pretty much dead for main consumers ... only niche market for 3D is projectors ... and few lucky bastards with 2016 LG OLED
It might come back with Avatar 2 ... but I would not hold my breath
--- Quote from: JimH on March 26, 2022, 07:36:40 am ---Doesn't madVR work for you when you need 3D?
--- End quote ---
It does ... except for subtitles for frame pack 3D "with right eye first" ... thankfully there are not that many of them ... and only few of those really need subtitles (eg Life of Pi has forced subtitles for Indian spoken language)
--- Quote from: Ekpen on March 27, 2022, 08:57:04 pm ---Hello:
The topic here is 3D.
I am not hijacking this thread.
What I wrote here is relevant to the topic being discussed at the moment.
Thanks
George Omoregie.
--- End quote ---
This thread was reporting a bug on playback of subtitles for 3D movies "with right eye first" encoding
So what you are posted is a bit off topic (though I also would like 3D to be implemented in JRVR ... maybe as SBS and OU first ... and framepack later)
tij:
No response from Doom9 forum ... cannot report bug on MadVR site as my registration email never arrived ... couple with fact that only bug fixes are done on beta releases which have expiration time ... there is almost no chance this gonna be fixed on MadVR side (i really do hope I am wrong)
To summarize my finding ... MadVR renders subtitles and OSD incorrectly for frame pack encoded 3D videos that are "with right eye first".
To be more precise ... while video is correctly rendered for each eye ... subtitles and OSD are rendered for wrong eyes (aka subtitles/OSD meant to be seen by right eye is rendered for left eye ... and vice versa)
MadVR assigns depth of subtitles in real time ... such that subtitles are closest to watcher (furthest away from TV) to preserve depth perception ... when these gets assign to wrong eye ... subtitles are put "inside TV" ... and if something overlapping subtitles are displayed "outside TV", your eye cannot focus on subtitle resulting in total mess (and possible headache if watch for too long)
This happens in all 3D modes of MadVR ... SBS, OU, interlaced, frame pack
This unfortunately cannot be fixed by JRiver ... unless they stop relying on MadVR for 3D, which is a completely different topic
If you want to reproduce this ... i can confirm that following 3D titles are "with right eye first" (remember subtitles must overlap with object that "pop out" of screen ... good example - Life of Pi at around 13min ... if you cannot find when subtitles are problem in below movies, let me know the title of the movie and i will find the troubled spot)
Edge of Tomorrow
Ice Age Collision Course
Ice Age Continental Drift
Ice Age: Dawn of the Dinosaurs
Rio 2
The Boss Baby
The Hobbit The Desolation of Smaug
Prometheus
The Darkest Hour
The Hobbit An Unexpected Journey
Epic
Rio
The Three Musketeers
Life of Pi
The Chronicles of Narnia: The Voyage of the Dawn Treader
Ghostbusters
Oz the Great and Powerful
The Jungle Book
Gullivers Travels
Gemini Man
Bait
zybex:
Not sure if TSMuxer of MakeMKV can do it, but I think it's relatively simple to reencode the video to toggle the Left/Right primary channel. The 3D MVC format has one base video stream for the left or right eye, and the second eye is encoded just as offsets relative to the first stream. A "left-eye first" uses positive offsets, and a "right-eye first" uses negative offsets (or perhaps vice versa, not sure). So the difference from those 2 encodings is just the plus or minus signal on the offsets. Perhaps there are tools out there to do this switching/reencoding.
Of course, Hendrik might now shoot down this theory ;D
Not sure what happens if the container has the wrong flag specified and the software doesn't detect the primary eye correctly... perhaps that's just what is happening here?
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