Guide to convert BD 3D to 3D Left+Right Stereoscopic and Anaglyph

[slavanap]

Originally Posted by allanlee

This link seems to be dead. Can anybody help to post the file again?

Thanks in advance!

http://sendfile.su/920191

[allanlee]

Originally Posted by slavanap

http://sendfile.su/920191

Thank you soooo much! :-D

[b0mb]

hi!

one thing i need to explained...

when i encode to full sbs what eye do should come first

i´ve done 3 encodes now with left eye first and i think i had luck because its looking good.

can some1 plz explain to me!

thx in advance!

b0mb

[pistacho]

Originally Posted by b0mb

hi!

one thing i need to explained...

when i encode to full sbs what eye do should come first

i´ve done 3 encodes now with left eye first and i think i had luck because its looking good.

can some1 plz explain to me!

thx in advance!

b0mb

The most common is this:

Half SBS

StackHorizontal(HorizontalReduceBy2(Left), HorizontalReduceBy2(Right))

Half TAB

StackVertical(VerticalReduceBy2(Left), VerticalReduceBy2(Right))

[b0mb]

excuse me but i still didn´t get it ...

i do full sbs encodes and i can choose left side first or right side first but i don´t understand when do i need left side first and when right side first... :|

the avc stream?

[pistacho]

Left always = left = first

but left can be AVC stream or MVC stream

if left is AVC (most common):

AVC = left = first
MVC = right = second


if left is MVC:

AVC = right = second
MVC = left = first

[b0mb]

ok

when avc stream ist right eye i choose right eye first, right?

i think i´ve understand it now

thx a lot

[pistacho]

I like it more like this:

"when avc stream ist right eye i choose MVC eye first"

[r0lZ]

It is theoretically possible to do right eye first, and there are some SBS or T&B movies on youtube in that unusual format. I strongly recommend to always avoid it, as left first is now clearly the standard.

In a BD 3D, one of the two views is the "base view", encoded in AVC (classic h264 encoding), and the other view is the "dependent view", encoded in MVC. As its name implies, that view is dependent of the other view and cannot be decoded without the base view. Usually, the base view is the left view, but there are some exceptions. You have to know exactly what contains the base view, and encode the base view first when it is the left view, and the dep view first when the base view is the right view.

Note that eac3to has a bug and prints always "AVC (left eye)" for the base view and "AVC (right eye)" for the dep view. AVC for the dep view is wrong, but that's not a big problem. You must use another tool to verify if the left eye view is really the base view. My program, BD3D2MK3D fixes the output of eac3to, and prints the correct information in its GUI. You can also use tsMuxeR to see the correct information. (Unfortunately, its GUI doesn't show it. You have to use the command line to see it.)

If you use my program, you should just select "Half SBS, left first" (or "Half T&B, left first"), and it will take care of the order of the views in the AVC and MVC streams automatically. Currently, it is still possible to select "right first", but I will remove that possibility in the next version. I don't want to encourage peoples to encode in that unusual format, difficult to watch on most 3D TVs.

[b0mb]

ok... thx for the infos!

btw. i´m encoding all stuff @ fullsbs because i´m in the lucky position that my samsung led tv combined with my htpc running latest openelec nightlies i playing the encodes @ fullhd without loosing resolution

[r0lZ]

Nice. Indeed, you're lucky. My Samsung TV refuses the full SBS, but can display full 3D @ 47.952 fps (from a BD player).

[Nico8583]

Do you run OpenElec on a PC x86 architecture or another system (Raspberry Pi, Android stick...) ?
I don't know about full SBS output, size file, quality, etc...

[b0mb]

Originally Posted by Nico8583

Do you run OpenElec on a PC x86 architecture or another system (Raspberry Pi, Android stick...) ?
I don't know about full SBS output, size file, quality, etc...

i run openelec on a zotac zbox id18. this gr8 htpc did cost me 130,- € together with 2 gig ram (dual core celeron U and intel HD graphics). that´s unbeatable for that price compared to the mediaplayers on the market you can get.

i´m encoding the fullsbs movies with crf18. the mkvs have around 9 to 26 gigs belonging to the source material.

the difference in quality between original bluray mvc stream and fullsbs is subjectively none. where the half-sbs encode of avatar or life of pi for example are looking like a 2D movie compared to the fullsbs stream.

[Nico8583]

Thanks for the info, very interesting

What would you like to say with this : "where the half-sbs encode of avatar or life of pi for example are looking like a 2D movie compared to the fullsbs stream." ?

[r0lZ]

That's not credible. The resolution of the video is not at all related to the depth effect. I can admit that the video may be a bit less sharp (since its resolution is divided by 2), and perhaps that there is less "detail" in the depth, but certainly not that the depth is reduced.

There have been long discussions of a French forum on the supposed superiority of half-T&B over Half-SBS, because the parallax depends of the horizontal direction and therefore is more precise when the X resolution is not divided by 2. Theoretically, it's true. But the parallax plays only a small role in the perception of the relief. The brain is much more important. And the conclusion of the experts on the forum is that half-SBS gives excellent results, not less good than half-T&B (or full-SBS). Of course, if you really think that full-SBS is superior, you will perhaps see a difference. But it's pure religion. And anyway, if there is a small difference, it's in the precise position of the "planes", not at all in the global depth of the scene, simply because the parallax do not change when the resolution is reduced. It is only somewhat blurred, exactly like the precision of the pixels.

[pistacho]

It also depends on the type of TVs technology (active / passive).

In passive TVs TAB is better and there is a technical justification:
http://forum.doom9.org/showthread.ph...84#post1648284

[Nico8583]

Thanks for informations, I have already seen in the past TB/OU is better than SBS for passive TV but after several discussions, it seems that quality between SBS and TB on passive TV is equal. But I don't have a passive TV so I can't verify...

[b0mb]

maybe its just becaus of the lower resolution but in case of avatar you loose a lot of depth

[Sharc]

@r0lz
This is certainly of interest for you as well:
SBS and OU with FRIMdecoder piping into x264.
Works perfectly!

[HWK]

Originally Posted by Sharc

@r0lz
This is certainly of interest for you as well:
SBS and OU with FRIMdecoder piping into x264.
Works perfectly!

Here is example of Half SBS

http://forum.doom9.org/showthread.ph...96#post1661996