Playing 3D SBS mkv on Lume Pad 2

Hi. I copied over a half-SBS 3D mkv to the internal storage, using a 3rd-party app. I can see the file, and it wants to play, but just sits there black. It’s in the same folder with the sample media, and the app has added the proper extension to it. Anything else to do?

And are we still limited to FAT32 for microSD cards? I have a couple of those, and would like to use them to store these.

Is there really no way to play over a network? What year is this? I’d ultimately like to run Plex, and then just be able to switch to 3D mode, while playing an SBS file. Seems like it shouldn’t be THAT hard…

Also I noticed all the sample movie media is not at the correct aspect ratio. It’s all a bit vertically squeezed. Maybe this was done to fill the screen vertically, but I am sensitive to proper aspect ratios, and maybe it’s a setting somewhere? Thanks!


Are you attempting to play it in LeiaPlayer? Though MKV is a supported format, it’s a container format, meaning the file inside the container can be of various different codecs. Not all video and audio codecs are supported, but the most popular ones are. You can easily use Handbrake on a Mac or PC to convert the file to a supported format.

The Lume Pad 2 can format MicroSD cards to a format most optimized for it if you plug it in. However, it can read from more than just the FAT32 format, though it can’t write to every format it can read from.

There are various ways to play video files over a network in various apps across Android. However, Leia’s 3D apps don’t support this feature currently. For the original Lume Pad, @jakedowns made a network playback application called MPV-Player for the platform. This may come to Lume Pad 2 in the future.

It wouldn’t be hard at all! Ask the developer of the Plex app you use to integrate the Leia SDK and it will work with very minimal work on their part.

The stretch was baked into those file for that exact reason. I agree with you, but those who made the choice were sure no one would notice :stuck_out_tongue:

These are in what I would consider a standard format, this is form MediaInfo:

Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 2 frames

I would think these should playback without re-encoding.

Now those who made the choice to stretch the videos were 100% wrong. Not sure who you think your target market is :wink:

So for the format of microSD cards on the pad itself, does that support files larger than 4GB?

I will submit a request to Plex, but I am afraid that might be a bit of a black hole…

SO for Plex, it turns out one can use an external player, such as MPV 3D. So if that player functioned correctly on the Lume Pad 2, then it would work as desired, no help from Plex necessary.

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Also could be as simple as just toggling the backlight mode, but this is gone now. Is there a replacement?

I have sent @jakedowns a small donation, in hopes he can just add the hooks for the new pad. I am trying to understand how it happens, and could potential build a new version, just not sure what it needs to work.

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I’m a developer and I’m looking at apps to make for the Lume Pad. Currently I’m focusing on 3D gaming, but the same technology I build could be used for a video player potentially. I’ll look into it.

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thanks so much steve, i had quite a busy week but i may have some time this weekend to buckle down and get back into this. i appreciate the support :raised_hands:

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I’ll be back in front of the tablet on Monday. It would be super cool to have something to test.

what are recommended settings and formats to use in handbrake ?

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For maximum compatibility with all devices (including Lume Pad 2), we recommend MP4 with an h.264 video codec and AAC audio codec. You can experiment with pushing it up to h.265 and other codec finagling if you want, but I personally use the above standard and it works great for my content.

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for anyone following along, LP2 support has been added to my fork of MPV3D Here:

gonna work on getting it submitted to the Leia App Store asap

special thanks to @steve321 for his sponsorship of this work


For creating content, I have had good results using MakeMKV, to create a MKV. You need to be sure to select the “other eye” video data, that is not selected by default. Once that is created, you use BD3D2MK3D to create the actual HSBS file. One might be able to to directly from a 3D BD with this application, but haven’t tried that yet.