Aspect ratio of 3D videos is always 4:3

Rlaur

The aspect ratio has been messed up on 3D videos since the last update. Many people have been complaining about this on the Steam forums and someone suggested to post about it here. Here's the Steam thread.

https://steamcommunity.com/app/837380/discussions/0/2970650651615405941/

Tony

hi Rlaur

Are you guys talking about 3D movies or VR?

Yar

Hello!
Thanks for your feedback, we will definitely investigate this.
Can you give me more details on what video you are watching? So that we can reproduce the problem.

Rlaur

Yar

Tony

It happens on every 3D video I've tried, Yar. Local video files, not online ones. And Tony, I mean 3D like for example The Lion King 3D.

malls_and_halls

Can confirm...I have 3D Bloggie mp4 sbs video that plays fine on Bigscreen and is smooshed on Deo.

Love Deoplayer!!! please also consider .mpo support and 3d .avi video support.

Yar

Hi, today we downloaded The Lion King 3D movie, could not reproduce the problem.
Could you make a video with the problem, as well as send a link to the video that you download, so that we can reproduce the problem on our own.
Thank you!

szakinorbert88

This is an issue for me too.
Aspect ratio modifier needed in the player.
If I want to watch flat side by side 3d video, it has to be the double of normal resolution.
For example:
If the original sbs 3d video resolution is 19201080 (9601080 each eye) it is compressed in width which is normal.
BUT
If i select sbs flat in the player, the 3d works, but the movie is still compressed in width and remains in 4:3 ratio.
It worked a few versions before, but now it works only, if the sbs video is 32:9 in ratio. It requires a 16:9 left, and a 16:9 right image to work properly.
Please fix this issue.

Tony

szakinorbert88 Does it make a difference using SteamVR, Oculus Link or WMR?

Mike-Urilorib

Same issue with me. Even after selecting SBS flat the resulting photos are still compressed in width.

Glidos

Likewise, seeing this problem with this very common format. The tital is a little misleading. These are 16x9 movies that are displayed 8x9. It's not 4x3.

Tony

Which container are these videos in? MKV? MOV?
Or is the codec DivX/Xvid "avi" by any chance?

Astyan

Hi same issue here with oculus quest 2.
I have issues with only 3D movies. And i tried a lot of movies... encoded by good teams that know what they do 😉
This is clearly a bug, this is not a bad aspect ratio encoded in the video container I guess.
BigScreen read them all well...
I definitively think that the issue is what szakinorbert88 has said.
it looks like the real aspect display by DeoVR to user is just this, if i interpret all my tests :
display_aspect = aspect_in_file / (Is_3D_SBS_OR_OU ? 2 : 1) / (Is_3D_OU ? 2 : 1)
where it should be :
// because we keep only half of image in case of 3D (on width or on height depending of the 3D type),
// We have to compensate
display_aspect = aspect_in_file * (Is_3D_SBS ? 2 : 1) / (Is_3D_OU ? 2 : 1)

Astyan

Astyan And i forgot to say that the containers are mkv

Astyan

Hi same issue here with oculus quest 2.
I have issues with only 3D movies. And I tried a lot of movies... (encoded by good teams that know what they do 😉 )
This is clearly a bug, this is not a bad aspect ratio encoded in the video container I guess.
I used MKVToolNix v56.1.0 ,the display width and height is specified as full HD dimension
Video Stereo Mode is not set.
Using MKVToolNix Gui v56.1.0 I tried (with the "header editor tab):
- to change the Video Display Width to 3840 => No change in DeoVR (VLC display video correctly : 3840x1080)
- to set the Video Stereo Mode to value 1 (which mean SBS, Left eye first) => No change
- to change Video Pixel Width to 860 (which makes VLC to make display longer, not shorter) => no change
- the three ! => no change

Each time the video appears in format 8/9
(so the szakinorbert88's is wrong...) setting 3840 does not fix anything

BigScreen seems to take into account only the change of pixel width, but by taking the half of the left image, and the right of the right image => making the result totally unwatchable lol...
For all others it just always display 16/9...

Please fix this bug !

norsean

Not sure if DeoVR has given up on fixing this Bug. This bug has been here since Dec 2020 and it is on all platforms - Quest PC, Quest android, SteamVR etc.
Have been using Skybox (quest 2 android app from quest store) a lot lately for 3D movies only. The skybox PC streamer works pretty well too.
As a 3D video player, the only thing Skybox is missing from DeoVR is that it does not have sharpening control, though DeoVR sharpening control is only on the PC apps. Skybox Bluetooth audio is also slightly out of sync but can be fixed in the options.

clemon79

Signed up specifically to look into this. Glad it's not just me; bummed that it's not just a setting I was missing.

Yeah, this needs to be fixed. an SBS video needs to have the option to be re-stretched to the original resolution.

niccageshairline

Hey Deo, any update on this? Your player is great, but this bug has been here way too long now (and it wasn't there when I started using it on Quest 2, appeared after an update). All my 3D local files play fine in other Quest 2 VR players, and also in VLC etc on Windows/other desktop. The container makes no difference, .mkv and .mp4 all suffer the same mis-rendering for aspect as described above. I prefer Deo to others as just plain background and no fake rooms/views etc. Please please please fix, thanks!

philpw99

I am surprised that this bug still exists. An easy temporary fix is turning on the "DirectShow" in the options. However, this nasty bug lives through over a year and still here to harass everyone. Shaking my head now.

niccageshairline

Hey, philpw99, where is that DirectShow option? Couldn't see in settings or in options tab (avail after local file selection/during playback). Thanks for any help!

philpw99

You don't see that option in the playback mode? Then you must be using Android or Quest. Sorry but this fix only works with a PC that uses DirectX.