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FR: 3D content detection

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masterjoe:
Hey guys,

It would be very cool if MC could automatically detect whether a video is a Side-by-Side or a Top-and-Bottom video and notify this detected info via MCWS or COM or both.
The detection could be done when generating thumbnails and the 3D type flag then should be stored in the library. Another way would be the detection on playback so that MC scans a short while to see whether this is a SBS or a TAB or a normal movie. It could be done by sampling some frames from the video prior to playing it. However the scan variant with the library field on creating / updating thumbnails would be much more efficient.

When a 3rd party program then becomes notified / aware of the 3D flag then it could switch the TV to the correct mode for playing this video!

I am using MC on a HTPC with Eventghost installed. I would love to be able to capture the 3D flag from MCWS Smiley

Thanks.

jmone:
Hi MasterJoe,

If you are talking about MKV3D, the the file header already contains the folloiwng information that players could use:


--- Quote ---StereoMode field values:

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) (field sequential mode)
14: both eyes laced in one Block (right eye is first) (field sequential mode)
--- End quote ---

If you had a couple of short examples clips it may help.

Thanks
Nathan

fitbrit:

--- Quote from: jmone on August 22, 2015, 04:21:46 pm ---Hi MasterJoe,

If you are talking about MKV3D, the the file header already contains the folloiwng information that players could use:

If you had a couple of short examples clips it may help.

Thanks
Nathan


--- End quote ---


No, he was talking about side by side or over/under 3D formats, that can reside in 2D filetypes such as mkv. Many TVs and projectors will play these, but not will switch to 3d mode automatically when these formats are detected.

jmone:
Actually, MKV3D is for the formats I listed.  A std MKV extension can include either AVC or MVC codecs.  Anyway regardless of the extension used the header info should be there if correctly muxed into a Matroska container which is why a couple of short clip examples would help to confirm.

Hendrik:

--- Quote from: jmone on August 22, 2015, 09:27:10 pm ---Actually, MKV3D is for the formats I listed.  A std MKV extension can include either AVC or MVC codecs.  Anyway regardless of the extension used the header info should be there if correctly muxed into a Matroska container which is why a couple of short clip examples would help to confirm.

--- End quote ---

In my experience, this info is usually not present, so there is no good way to detect anything.

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