Strech the width on SBS video but keep same height

[daitj]

How can I strech the width of the video in SBS mode.

I tried to play around with MPV's video-scale-* (x/y) but this streches whole output not each sides?

I tried to change sarOutput but this changes the height, which is not useful.

What value do I need to pass to ffmpeg to acheive this?

[dfaker]

Do none of the modes with the P key work?

If you're using ffmpeg directly you can try passing through https://ffmpeg.org/ffmpeg-filters.html#stereo3d there's a few output modes there for half and full width outputs.

[daitj]

I am specifically talking about sbs-hw mode (using P key), I have a weird need where I need to stretch width for it to look good enough, but I cannot seem to find a way to do it.

It is okay if you do no want to spend your time with this or do not know about this enough. I will try to do some more research myself.

[dfaker]

Do we have a screenshot of a representative frame from the initial video before any processing?

I'll see how the modes under the P key could be extended to accommodate it.

[daitj]

Sorry to reopen this old thread, I came back with a video (180 degree SBS 3D VR)

This is screenshot of the video without VR-reversal:

Currently it looks like this on "SBS half width mode" using VR-reversal, The horizontal view(width) each side is squeezed, when you look this through VR googles (cardboard vr).

This is how I want it to look like, which is the default implementation in this project

Video from the example