Log in

View Full Version : Half-OU 3DBD conversion - trouble extracting source


Thalyn
7th May 2013, 17:05
I'm not exactly new to the idea of ripping and transcoding discs (I've done several hundred), but I am relatively new to doing things pretty much manually. Everything I've done previously has been using as many automated tools as possible (Handbrake - what would I do without you?) but there aren't any such tools for what I'm trying to do now.

I've started dipping my hand in 3D transcodes, making Half-OU output. To do this I'm using eac3to to extract the streams (left and right eye separately), then MeGUI with an AVISynth script using the H264StereoSource plugin to pass it to x264 and finally muxing it all together with MP4Box. So far I've had two highly successful transcodes, but now I'm stuck.

The recent release of "Monsters, Inc." on BluRay seems to dislike being extracted. Eac3to warns me that neither "video bitstream framerate field" matches the timestamps, then comments on hundreds, if not thousands of missing frames in both the left and right "eyes" up until around the 48 minute mark. Trying to encode afterwards leaves me with the left frame working what appears to be perfectly, and the right frame almost entirely green.

Now, in experimenting with this, I've found that MakeMKV 1.8.0 and earlier also could not extract this particular movie, but 1.8.1 can. But this leaves me with a multiview file which I can't do anything with. It also leaves me with some kind of hope that what I'm after is possible, if I can just find the right tool and/or settings.

So, I guess what I'm really trying to ask (in way too many words) is: Does anyone know how to successfully extract the two video streams from Monsters, Inc. 3D necessary to make an OU or SBS transcode?

Cheers.

Sharc
7th May 2013, 18:47
Did you try BD-Rebuilder (latest Version) or BD3D2MK3D? Do these also fail?
Can you watch the 3D with Stereoscopic Player? Is it playable in 2D? Sure it's not a bad rip?

Thalyn
8th May 2013, 07:28
I can say with all honesty that I'd not tried either of those two programs, but after looking over them now neither seems to be able to do what I'm after without having to recompress the entire thing multiple times over. If I were comfortable with the idea of leaving the letterboxing that might be OK but I'm aiming for display independence and letterboxing won't necessarily work too well with a 22:9 screen - plus all my other transcodes have had it removed and I'm a stickler for consistency. I also suspect that BD3D2MK3D won't work at all because it depends on eac3to in order to get its streams; and uses the same version I've already tried and failed with.

The MKV produced by MakeMKV works just fine - it's just completely unusable for my purposes, based on my current knowledge. It plays back in 2D and 3D, but I have no way to then extract the video to separate "eyes" ("Left" and "Difference" - not necessarily rebuilding the right, since I have tools to do that already) to then re-encode it smaller than the 20GB original. All my efforts to extract the video so far have left me with what I believe is an MVC H.264 file, but attempts to read it back with DirectShowMVCSource have all failed.