How do I convert 3D SBS MKV H265 to 3D SBS MKV H264?

[vidhenry]

I have a 3d sbs MKV H265 video. I need to convert it to 3d sbs mkv H264. I need to convert the H265 to H264 while preserving the existing 3d sbs part of the video. Does anyone know a software that can do this?

I tried using PAVtube video converter, but it doesn't know the original video is 3d and ends up adding SBS twice when I use the MKV 3d sbs profile.

[sneaker]

Shouldn't be too difficult. E.g. encode in HandBrake with custom x264 parameter "frame-packing=3". Then afterwards add 3D flag with MkvToolNix GUI's Header Editor (video track->stereo mode, set to "1" and save)

Should be similar with other software like MeGUI except they want format like: --frame-packing 3

[vidhenry]

Shouldn't be too difficult. E.g. encode in HandBrake with custom x264 parameter "frame-packing=3". Then afterwards add 3D flag with MkvToolNix GUI's Header Editor (video track->stereo mode, set to "1" and save)

Should be similar with other software like MeGUI except they want format like: --frame-packing 3

In handbrake, do I add the customer parameter by putting 'frame-packing=3' under extra options in the video tab? I'm not quite sure how to add a custom parameter.

[sneaker]

Yes, exactly.

[vidhenry]

Yes, exactly.

Thanks. You wouldn't happen to know where I can learn more about the setting frame-packing=3 ? I wonder if there is a list of these custom parameters for 3d movies anywhere?

[sneaker]

x264/H.264:

      --frame-packing <integer> For stereoscopic videos define frame arrangement
                                  - 0: checkerboard - pixels are alternatively from L and R
                                  - 1: column alternation - L and R are interlaced by column
                                  - 2: row alternation - L and R are interlaced by row
                                  - 3: side by side - L is on the left, R on the right
                                  - 4: top bottom - L is on top, R on bottom
                                  - 5: frame alternation - one view per frame
                                  - 6: mono - 2D frame without any frame packing
                                  - 7: tile format - L is on top-left, R split across

For MKV: https://matroska.org/technical/specs/index.html#StereoMode