Question about 3d detection

[corwin7 0]

mkvinfo example (2015) 1080P 3D/example.mkv

...

  + Stereo mode: 1 (side by side (left first))

...

 

With an nfs share Kodi recognizes this file as 3d, shows the 3d tag, and switches to 3d on playback. Emby does not grasp that this file is 3D and it then shows up in Kodi with the Emby plugin as not 3D.

 

╰─➤  pkg info | grep emby                                                                                                                                                                                                                                                                        64 ↵

emby-server-3.0.5972           Home media server built using mono and other open source technologies

 

 

[Luke 37093]

Hi, we don't do any 3d detection. you have to name your files using a supported naming convention for 3D - OR, manually tag them as 3D in the server web interface:

 

https://github.com/MediaBrowser/Wiki/wiki/3D%20videos

[corwin7 0]

First off, thank you for responding Luke (in less than 5 minutes too. ).

 

If Kodi by itself sees them as 3D, but Kodi with Emby does not, does that not suggest that Emby is inferior to just Kodi? Why is Emby taking away functionality that Kodi normally has? Am I misunderstanding something? I have no interest is renaming the 3d files with a jacked up naming convention when the info is already a property of the .mkv file, and Kodi sees (without Emby) this just fine.

[Luke 37093]

if you can provide a sample file for testing then we'll look into it, thanks.

[corwin7 0]

That's awesome, thank you!

This lists the mkv parameters for the different types of 3D formats in the StereoMode preperty:  https://www.matroska.org/technical/specs/index.html#StereoMode

 

I used ffmpeg to create a 10 second clip

 

╰─➤  ls -lh 20_century_fox_3D.mkv

-rw-r--r-- 1 gander gander 1.2M Aug  8 19:59 20_century_fox_3D.mkv

 

╰─➤  mkvinfo 20_century_fox_3D.mkv | grep -i stereo

|   + Stereo mode: 1 (side by side (left first))

 

1.2 Megs.. Let me know where to send it.

 

Edited August 9, 2016 by corwin7

[Luke 37093]

put it on something like dropbox or google drive and post or PM me the link. thanks.

[Luke 37093]

thanks. all we really get from ffprobe is the stereo_mode tag. when the value is left_right we will assume 3d. I'm sure there are other values for different 3d types but since we don't know what those are yet, we'll add more on an as needed basis.

[corwin7 0]

>  I'm sure there are other values for different 3d types but since we don't know what those are yet

 

We have that. From https://www.matroska...html#StereoMode  ahh I see the problem.  matroska.org/technical/specs/index.html

 

Stereo-3D video mode (0: mono, 1: side by side (left eye is first), 2: top-bottom (right eye is first), 3: top-bottom (left eye is first), 4: checkboard (right is first), 5: checkboard (left is first), 6: row interleaved (right is first), 7: row interleaved (left is first), 8: column interleaved (right is first), 9: column interleaved (left is first), 10: anaglyph (cyan/red), 11: side by side (right eye is first), 12: anaglyph (green/magenta), 13 both eyes laced in one Block (left eye is first), 14 both eyes laced in one Block (right eye is first)) .

 

 

Thanks for working on this so quickly! 

[Luke 37093]

Thanks. and yea I understand, but we are going off of what ffprobe tells us, we're not reading the mkv headers directly, so that means we need to understand how ffprobe presents the data to us. Thanks for the sample file.

[corwin7 0]

 ╰─➤  for I in `seq 1 14`; do

echo -n "Mkv stereo-mode=${I} : "

mkvpropedit --edit track:1 -s stereo-mode=$I test.mkv > /dev/null

ffprobe test.mkv 2>&1 | grep "stereo_mode" | awk '{print $3}'

done

 

Mkv stereo-mode=1 : left_right

Mkv stereo-mode=2 : bottom_top

Mkv stereo-mode=3 : top_bottom

Mkv stereo-mode=4 : checkerboard_rl

Mkv stereo-mode=5 : checkerboard_lr

Mkv stereo-mode=6 : row_interleaved_rl

Mkv stereo-mode=7 : row_interleaved_lr

Mkv stereo-mode=8 : col_interleaved_rl

Mkv stereo-mode=9 : col_interleaved_lr

Mkv stereo-mode=10 : anaglyph_cyan_red

Mkv stereo-mode=11 : right_left

Mkv stereo-mode=12 : anaglyph_green_magenta

Mkv stereo-mode=13 : block_lr

Mkv stereo-mode=14 : block_rl

 

It appears that if ffprobe reports a property of "stereo_mode" then the file is 3D. FFprobe does not report the "stereo_mode" property on normal non-3D files (mkvpropedit --edit track:1 -s stereo-mode=0 test.mkv).

Edited August 9, 2016 by corwin7

[Luke 37093]

Great, thanks for the info.