BD-Rebuilder, Feature Requests

[jdobbs]

Comparing the "shortcut" version with the "regular" 2-pass encode:
PSNR is 42....46 dB for the vast majority of frames. This is without black borders which would bias the result positively.What is the PSNR for an identical encode with a normal first pass?

[Sharc]

What is the PSNR for an identical encode with a normal first pass?
You mean compared to the blu-ray original as reference?

[jdobbs]

I mean if you did a normal 2 pass encode, then ran PSNR comparison against the original -- and then did the same encode with the reduceby2 first pass, how would the resulting PSNR values compare.

[Sharc]

ok, understood. I will be back soon ......

[Sharc]

I mean if you did a normal 2 pass encode, then ran PSNR comparison against the original -- and then did the same encode with the reduceby2 first pass, how would the resulting PSNR values compare.

Here some results for PSNR (on frame base)

a. Very demanding scene (10 worst frames):
- Normal 2-pass vs. original: 33.4.... 38.4 dB
- reduceby2 vs. original: 33.8 ....38.2 dB

b. Average...quiet scene (20 frames):
- Normal 2-pass vs. original: 49.7 ... 52.4 dB
- reduceby2 vs. original: 50.2 ... 52.6 dB (!)

c. Overall PSNR (total 8000 frames)
- Normal 2-pass vs. original: 46.23 dB
- reduceby2 vs. original: 46.10 dB

[jdobbs]

That's interesting. I don't think those differences are significant enough to even matter.

[Sharc]

Reasons could perhaps be
- that the distribution of I,P and B frames (.stats file) depends on the temporal sequence rather than on the resolution of the picture
- many blu-ray sources have a true resolution which is closer to 1280x720 than 1920x1080.

[musiclover]

Is there a way to put a "play all" button on a quick-play menu?

[jdobbs]

Is there a way to put a "play all" button on a quick-play menu?I can look at it. If it doesn't look to create other issues I can do it.

[musiclover]

I can look at it. If it doesn't look to create other issues I can do it.

Thanx. That would be nice.

[DoctorM]

@jdobbs - Have you been following the eac3to discussion about adding libdcadec.dll as an alternative to Arcsoft's DTS decoder?
Apparently it is free, open source, and lacks the bugs inherent to Arsoft's decoder.
Early days, but it might be worth following: https://github.com/foo86/dcadec

[omegaman7]

Would it not be possible to have BD-Rebuilder report the internal audio chunk sizes? In my case, it should report 4.94GB for the LPCM audio. I imagine BD-Rebuilder would be better than mediainfo, since its softare is significantly more complex ;)
http://i730.photobucket.com/albums/ww302/omegaman7/MIBDRB_zpsukg8auhc.jpg

[DoctorM]

"Quick_CRF" lets you set the value for quick extra encoding, but it might be nice to be able to set separate CRF values for different resolutions.

A disc I'm working on now has many bonus features that are carry overs from DVD and are high bitrate SD mpeg2.

A CRF of 20 is good for anything 1080p, but worse for 480p. But still, using a CRF value is a better idea in this case since using the same percentage compression as the movie on an extra going from mpeg2 to x264 is a waste of space.

Oooh, or simply an option to 'steal space from mpeg2 video' since AVC is more efficient?

[jdobbs]

A given CRF value should translate across resolutions. The perceived quality should be the same, with only the size of the output file changing.

Creating a greater compression ratio for MPEG-2-->AVC (as compared to that of AVC/VC-1-->AVC) might be a good idea.

[sneaker_ger]

A given CRF value should translate across resolutions. The perceived quality should be the same, with only the size of the output file changing.
Not really since you usually end up resizing them to the same screen size.

[jdobbs]

Not really since you usually end up resizing them to the same screen size.I would disagree. I assume you mean playback resizing... but you'd get that difference even before you reencoded. I would stand by my original statement, but I would add "relative to the original".

[Sharc]

I would disagree. I assume you mean playback resizing... but you'd get that difference even before you reencoded. I would stand by my original statement, but I would add "relative to the original".
Hmmm... I remember there have been some discussions on this in the past. The general consensus was that for lower resolutions CRF should indeed be reduced for similar viewing quality. If I remember correctly it has to do with the relative size of the compression artefacts which is higher for a small picture.

[DoctorM]

Not really since you usually end up resizing them to the same screen size.

That's how I've always heard it. Standard definition artifacts get magnified, where as HD artifacts are minimized by increased resolution.

I can't say I've seen an authoritative source on it, but in my experience I find lower CRF are usually needed for SD material.

[Sharc]

That's interesting. I don't think those differences are significant enough to even matter.
I found this link in my notes:
http://git.videolan.org/gitweb.cgi?p=x264.git;a=commit;h=0ba8a9c6973897ec35e1a5d241a71f4f5a4f81aa

[sneaker_ger]

That commit is unrelated, it's for multipass encoding.

[Sharc]

That commit is unrelated, it's for multipass encoding.
Yes, but I refer to the suggestion I made a few post before to accelerate pass1 by doing it with a lower resolution.

[sneaker_ger]

Ah, sorry.

Also see this then:
http://git.videolan.org/?p=x264.git;a=commit;h=dea5d7a54b5ba948ed71d74e0264a2191bcd9815

[jdobbs]

Hmmm... I remember there have been some discussions on this in the past. The general consensus was that for lower resolutions CRF should indeed be reduced for similar viewing quality. If I remember correctly it has to do with the relative size of the compression artefacts which is higher for a small picture.Sure that would be true. The artifacts would be made larger as the picture was made larger. But, of course, that would be true no matter what CRF you used. That is an issue with enlarging any picture -- not in the picture itself. If you look at most of those original DVD MPEG-2 sources you'll find artifacts already there that won't go away with reencoding no matter what CRF value you use. MPEG-2 has inherent limitations.

The obvious downside is that if you lower the CRF of those sources, you're stealing bandwidth from the main feature. I'm not sure whether it is enough to care about -- but then I'm not sure the difference in picture would be enough to worry about either.

But your point is taken. I'm not sure it's something worth arguing about.

[Lathe]

Would it not be possible to have BD-Rebuilder report the internal audio chunk sizes? In my case, it should report 4.94GB for the LPCM audio. I imagine BD-Rebuilder would be better than mediainfo, since its softare is significantly more complex ;)
http://i730.photobucket.com/albums/ww302/omegaman7/MIBDRB_zpsukg8auhc.jpg

I very much second this idea!

[jdobbs]

You really don't know the exact size until it has been extracted, all you could do is estimate. So it wouldn't be any more accurate than Mediainfo...

[omegaman7]

You really don't know the exact size until it has been extracted, all you could do is estimate. So it wouldn't be any more accurate than Mediainfo...

Well, I had to try :p It's just irritating sometimes. Sometimes DTS is 2GB and other times it's upwards of 4GB.

[Lathe]

Well, I had to try :p It's just irritating sometimes. Sometimes DTS is 2GB and other times it's upwards of 4GB.

That is absolutely true...

[Blurayhd]

Hi jdobbs is possible to add some option for example, when I select the Movie only option, but keep the splash menu? I mean, the main movie starts and through that menu I can set audios and subtitles?

[gonca]

@Blurayhd
Try menu and movie mode

[Blurayhd]

@gonca I'm using this function for a long time and every time I have to check and uncheck features and try the faster encoding (for try what´s happens) the most of times because when I try to play the disc on my bluray device it don´t recognize as a bluray movie or when I do forward to next just can pass it and the device just stop

[jdobbs]

@gonca I'm using this function for a long time and every time I have to check and uncheck features and try the faster encoding (for try what´s happens) the most of times because when I try to play the disc on my bluray device it don´t recognize as a bluray movie or when I do forward to next just can pass it and the device just stopI've never gotten any reports of anything like that.

An alternative is to import the BD. Then BD-RB will create a new menu for you (using the background video from the original BD's menu).

[DoctorM]

After reselecting enabled/disabled video/audio/subtitle tracks for the fourth time tonight for the same project, I realized it would be great if BD RB could remember your Stream settings between changes to options/settings/config instead of resetting everything. I realize that's done to reflect option changes, but most of the time it just makes a lot of work.

Then maybe a menu option to 'reset stream selections" manually to reflect current options.

[TatanScorp]

Will BD-Rebuilder ever have a box for output location like DVD-rebuilder has

[omegaman7]

Will BD-Rebuilder ever have a box for output location like DVD-rebuilder has

Highly unlikely. It would incur longer completion times.

[jdobbs]

Will BD-Rebuilder ever have a box for output location like DVD-rebuilder hasIf, for some reason, you want to output to a different location than the working folder, read the description/usage of the hidden option "OUTPUT_FOLDER" in HIDDENOPTS.TXT.

[DoctorM]

Highly unlikely. It would incur longer completion times.

I wouldn't think so. For those of us still using spinning platters, separate drives allow for faster rebuilds.
I always keep my work folder on a different drive.

[TatanScorp]

Yes, I have four spinning platters.
1. Operating system
2. For movies disks
3. Work Folders
4. Output Folders
Yes I take medication.

[soneca]

I also always used the work folder on another drive, the speed difference is clear.

C - SSD - OS
D - HD - Sources
E - HD - Work folders

[omegaman7]

I wouldn't think so. For those of us still using spinning platters, separate drives allow for faster rebuilds.
I always keep my work folder on a different drive.

I most definitely use 2 separate drives. 3 when counting my OS. But I have several more than that. E.g. R:\source, and S:\output(workfiles)

I'm talking about Working folder, and THEN output folder. The difference would be longer completion times. The way I see it, during rebuild of the workfiles, some files are being muxed, and simply put, changing the directory on the same drive. It's like dragging a file on C to another directory on C. But by moving it to another drive, it would depend on transfer speed.

[jdobbs]

Did you not see my post? That feature is already there.

[Blurayhd]

Hi again Jdobbs I want to ask you if you can add some features/options?

First, (as example) when I disable from some movie audios and subtitles that I don´t want to keep, in the final result, that audios and subtitles registers are there, there´s some posibility you can add or fix that for eliminate those registers?

Second, when I choose the Movie only option I really like to push the button "Splash menu" and see on screen the splash menu for setting up the movie but keeping the movie only. Why that? because in first place I want to start inmediatly the movie and setup this movie with splash menu. Can you do it Jdobbs?

Thank you very much for your time and really hope you can do it!!

[gonca]

The audio and subtitle pointers "issue" has been explained before, They will probably stay as they are.
Splash menu?

[Blurayhd]

The audio and subtitle pointers "issue" has been explained before, They will probably stay as they are.
Splash menu?

Sorry if I not was clear, i meant Popup menu

[jdobbs]

First, (as example) when I disable from some movie audios and subtitles that I don´t want to keep, in the final result, that audios and subtitles registers are there, there´s some posibility you can add or fix that for eliminate those registers? The audio/subtitles you've selected are no longer there. What is there is the choice for those items from menus, the remote, etc. But they now point, via references, to the first audio/subtitle stream you decided to keep.

As I've explained before, when doing a full-backup you are still using the original authoring (it is, after all, a full backup). In that authoring is HDMV or BD-J code that can select/deselect audio and subtitle streams. If you remove the references -- the code (and the disc) can (and likely will) fail to operate after the backup.Why that? because in first place I want to start inmediatly the movie and setup this movie with splash menu.I have no idea what you are asking.

[gonca]

@Blurayhd
If I understand you correctly, what you want is Movie & Menu mode.

[HWK]

Jdobbs,

Could you implement an option to resume from second pass when encoding using X265.

Currently what BD-RB does, it encode pass 1 and then move on pass 2 which is fine. However if it stops on second pass, BD-RB will redo pass 1 and 2 even though data from stats file is there.

Also If I may can I request option to add option to tweak pass 1 and pass 2 separately for X265. Currently it only does for X264 encoder.

[jdobbs]

On normal encodes it will pick up on the second pass and not redo the 1st... what kind of encode are you doing. ALTERNATE, maybe?

[HWK]

On normal encodes it will pick up on the second pass and not redo the 1st... what kind of encode are you doing. ALTERNATE, maybe?

Yes, Jdobbs I am doing alternate ones.

[jdobbs]

Ok. Yeah, I knew that was there. I'll look at it and see what I can do. It's a little different than BD encodes.

[musiclover]

@jdobbs

I seem to remember you mentioning the plan to make an imported dvd convert to blu-ray with working original menu. Alas I could not find this information in this thread. Must be a long time ago.

My question is: Did you indeed have that plan and is it still on your todo list?