Line interlaced/interleaved to 3D SBS (or SBSA)

[juli0r]

Hi!

Is there any possibility to convert a line interlaced 3D video (first line L, second line R, third line L,...) to 3D SBS or SBS Anamorph? (both fine for me)


The problem I have is:

I want to record games in 3D - 3DVision takes care of the conversion to 3D, but also immediately delivers to my output device, which is a line interlaced 3D monitor. (passive polarization)

Every 3D platform I would like to use wants 3D SBS or SBSA.

Any help is appreciated, even if it is a different angle how to solve my problem.

I have: A game (Dark Souls III) in 3DVision and am able to record it in line interlaced 3D
I want: That recording in 3D SBS or SBSA

Thanks in advance for any help

[Cornucopia]

That's been covered here before. In AVISynth, you can unfold the fields (even though they aren't actually fields, but alternating lines in the same frame), then use StackHorizontal() or StackVertical(), along with optional resize to get what you want (though you could do that part more easily with the Pantarheon 3D toolbox).

Note: you are already losing resolution vertically. Seems a shame to go and lose it again horizontally as well. Many/most 3D TVs can accept in TaB/OU/AboveBelow formats as well - you wouldn't lose further resolution that way.

Scott

[juli0r]

Okay, so start off with learning AVISynth basics (I mean really beginner basics) and then I hopefully understand your instructions.

Apart from that - the platform I want to upload the videos to only accepts SBS and SBSA, I know that a lot of output devices support TD or even the line interlaced format I was talking about, but the platform/marketplace needs SBS or SBSA because there is a whole range of output devices they deliver the videos to.

Just to get this right:

the L/R line format loses me half of vertical resolution since there is only half of the lines for each perspective L/R.

You are saying that if I want to convert to SBS Anamorph I will lose the half in the horizontal resolution, which makes sense since anamorph shrinks the resolution to half. If I use your method to create SBS I should not loose anything except the loss coming from the initial 3D format, is that correct?

Thanks a lot for your help

You said that topic was covered before, but I can't find it using the search - Was it covered with using different terms? Could you tell me what I should look for? I was 3 pages into the search with "interlaced to sbs" and that's a pretty broad filter for a search it seems.

[pandy]

https://ffmpeg.org/ffmpeg-filters.html#stereo3d

So in your case

stereo3d=irl:sbs2l

[Cornucopia]

No, if you go to sbs-a, you WILL lose H rez additionally, regardless of method.

Search on s3d or stereoscopic, etc. Or sbs alone. Interlaced term will give lots of false positives dealing with standard 2d field interlacing.

Scott