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Old 24th January 2016, 23:55   #774  |  Link
r0lZ
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Join Date: Jul 2003
Posts: 7,469
I will certainly NEVER implement a crop feature for 3D output. It's a total absurdity. The 3D video standard IMPOSES the 16:9 aspect ratio. And the 3D clips must be in HD. So, ONLY 1920x1080 and, to some extent, 720x1280 are legit for 3D clips. Many TVs do not support other aspect ratios at all, or they deform the image horribly to restore a full-screen display (like my Samsung). And anyway, probably all 3D TVs are optimised to play the 3D features in full HD, and are much less good when they must play butchered 3D videos. And it's not because other aspect ratios or resolutions can be played without problem by some (relatively rare) players that it's a good idea to do it.

I add that cropping the black bars is not really a gain of disc space, because the pure black can be compressed extremely well, and therefore it is really a bad idea to sacrifice quality and compatibility just for a few MBs of disc space.

In short, cropping the 3D videos is unfortunately a common mistake, and I will certainly not encourage peoples to do it.
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