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Topic: Cannot get SVP to work in full-SBS mode

I have an Acer SpatialLabs 15 glasses-free 3D stereoscopic laptop with 3840x1080 resolution.  I can get videos encoded in HALF-SBS to work just fine.  However, no go for full-SBS.  What happens is that the video image is "windowed" meaning that it only fills up a portion of the screen, such that there are big black bars on the top and bottom of the image and sometimes on the sides.  Plus the image is stretched out horizontally.  I usually use the SMplayer media player which uses the MPV engine.  However, I also have the same problem in MPC-BE.

I know the laptop can play full-SBS videos because there's a built in "SpatialLabs player" that can play them just fine.  The player has other problems, though, such as you can't slow down the playback.  Therefore, I prefer to use SMplayer with SVP but can' seem to find why I can't make it work.

2 Reply by dawkinscm (edited by dawkinscm 21-06-2025 23:15:13)

Re: Cannot get SVP to work in full-SBS mode

jimdogma7 wrote:

I have an Acer SpatialLabs 15 glasses-free 3D stereoscopic laptop with 3840x1080 resolution.  I can get videos encoded in HALF-SBS to work just fine.  However, no go for full-SBS.  What happens is that the video image is "windowed" meaning that it only fills up a portion of the screen, such that there are big black bars on the top and bottom of the image and sometimes on the sides.  Plus the image is stretched out horizontally.  I usually use the SMplayer media player which uses the MPV engine.  However, I also have the same problem in MPC-BE.

I know the laptop can play full-SBS videos because there's a built in "SpatialLabs player" that can play them just fine.  The player has other problems, though, such as you can't slow down the playback.  Therefore, I prefer to use SMplayer with SVP but can' seem to find why I can't make it work.

SVP has nothing to do with how your player presents a 3D image. That's purely down to your player and settings. However it sounds like what you are seeing is a 3840x1080 resolution image on the screen because that's exactly how it looks when presented properly. A thin strip going horizontally across the center of the screen with the top and bottom of the screen blank like the image below.

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  • Thanks: 1

Re: Cannot get SVP to work in full-SBS mode

dawkinscm wrote:
jimdogma7 wrote:

I have an Acer SpatialLabs 15 glasses-free 3D stereoscopic laptop with 3840x1080 resolution.  I can get videos encoded in HALF-SBS to work just fine.  However, no go for full-SBS.  What happens is that the video image is "windowed" meaning that it only fills up a portion of the screen, such that there are big black bars on the top and bottom of the image and sometimes on the sides.  Plus the image is stretched out horizontally.  I usually use the SMplayer media player which uses the MPV engine.  However, I also have the same problem in MPC-BE.

I know the laptop can play full-SBS videos because there's a built in "SpatialLabs player" that can play them just fine.  The player has other problems, though, such as you can't slow down the playback.  Therefore, I prefer to use SMplayer with SVP but can' seem to find why I can't make it work.

SVP has nothing to do with how your player presents a 3D image. That's purely down to your player and settings. However it sounds like what you are seeing is a 3840x1080 resolution image on the screen because that's exactly how it looks when presented properly. A thin strip going horizontally across the center of the screen with the top and bottom of the screen blank like the image below.

Ok, maybe I should have phrased my question differently and asked, "HOW can I get a full SBS video to play on my glasses-free 3D laptop?"  Oh, and by the way, I made a mistake-- the resloution of the monitor is a full 4K 3840x2160 resolution, if that makes a difference.

As far as media players, I've tried just about all of them, potplayer, KM player, etc., etc.  With the exception of the built-in "SpatialLabs player" the only one I can find that will play a Full SBS video on the laptop is Stereoscopic player, but that player has other problems.  For one, I don't think it's supported anymore and isn't undergoing ongoing development.  Two, it doesn't support SVP.  Three, and most importantly, it doesn't have an option to speed up and slow down video playback.  This is why I use SVP, so I can slow down videos and still have smooth playback.  I'm not an expert in these matters so if someone knows of a specific player that works with SVP and can play full SBS videos or can just help me with a solution in general, that would be great.

P.S.  Again, the built-in SpatialLabs player has an option to play 1) 2D-3D conversion (on the fly), 2) half-SBS, 3) full-SBS, and 4) Over-under.  So the monitor can seemingly play ALL formats available within the player.  However, the 3D software package also includes another feature called SpatialLabs "GO" where you can play any video on the screen in stereoscopic 3D as long as you can get the video into fullscreen mode (e.g. a YouTube video).  From here, you have an option to do one of two things, 1) if the video you're watching is in 2D, you can click a button that will convert it into 3D "on the fly," 2) if you are watching a side-by-side movie, as in the one dawkinscm posted above, there is a button you can click that will merge the side-by-side images into a 3D image.  There's not an option that will merge a top-down or over-under video, which seems odd.  So I'm not sure if this may be part of the problem or not.  Again, I'm not an expert.

4 Reply by dawkinscm (edited by dawkinscm 23-06-2025 08:50:22)

Re: Cannot get SVP to work in full-SBS mode

jimdogma7 wrote:
dawkinscm wrote:
jimdogma7 wrote:

I have an Acer SpatialLabs 15 glasses-free 3D stereoscopic laptop with 3840x1080 resolution.  I can get videos encoded in HALF-SBS to work just fine.  However, no go for full-SBS.  What happens is that the video image is "windowed" meaning that it only fills up a portion of the screen, such that there are big black bars on the top and bottom of the image and sometimes on the sides.  Plus the image is stretched out horizontally.  I usually use the SMplayer media player which uses the MPV engine.  However, I also have the same problem in MPC-BE.

I know the laptop can play full-SBS videos because there's a built in "SpatialLabs player" that can play them just fine.  The player has other problems, though, such as you can't slow down the playback.  Therefore, I prefer to use SMplayer with SVP but can' seem to find why I can't make it work.

SVP has nothing to do with how your player presents a 3D image. That's purely down to your player and settings. However it sounds like what you are seeing is a 3840x1080 resolution image on the screen because that's exactly how it looks when presented properly. A thin strip going horizontally across the center of the screen with the top and bottom of the screen blank like the image below.

Ok, maybe I should have phrased my question differently and asked, "HOW can I get a full SBS video to play on my glasses-free 3D laptop?"  Oh, and by the way, I made a mistake-- the resloution of the monitor is a full 4K 3840x2160 resolution, if that makes a difference.

As far as media players, I've tried just about all of them, potplayer, KM player, etc., etc.  With the exception of the built-in "SpatialLabs player" the only one I can find that will play a Full SBS video on the laptop is Stereoscopic player, but that player has other problems.  For one, I don't think it's supported anymore and isn't undergoing ongoing development.  Two, it doesn't support SVP.  Three, and most importantly, it doesn't have an option to speed up and slow down video playback.  This is why I use SVP, so I can slow down videos and still have smooth playback.  I'm not an expert in these matters so if someone knows of a specific player that works with SVP and can play full SBS videos or can just help me with a solution in general, that would be great.

P.S.  Again, the built-in SpatialLabs player has an option to play 1) 2D-3D conversion (on the fly), 2) half-SBS, 3) full-SBS, and 4) Over-under.  So the monitor can seemingly play ALL formats available within the player.  However, the 3D software package also includes another feature called SpatialLabs "GO" where you can play any video on the screen in stereoscopic 3D as long as you can get the video into fullscreen mode (e.g. a YouTube video).  From here, you have an option to do one of two things, 1) if the video you're watching is in 2D, you can click a button that will convert it into 3D "on the fly," 2) if you are watching a side-by-side movie, as in the one dawkinscm posted above, there is a button you can click that will merge the side-by-side images into a 3D image.  There's not an option that will merge a top-down or over-under video, which seems odd.  So I'm not sure if this may be part of the problem or not.  Again, I'm not an expert.

OK that makes more sense. For PCs, I've used VLC with the Virtue Pro XR/AR glasses which only supports full-SBS, but 3D is painful to get working properly in VLC because of the aspect ratio. Bino3D apparently supports all 3D formats but I've never used it myself. I remember the code for mpc-be media player being able to handle SBS, but the option did not exist in the menu.