multiangles

[MarioGarcia]

okay, I don't know where to post this question, so I give it a shot here.
I have been trying to backup some of my metallica DVDs, they all have one or two songs with angles, usually one angle for each member of the band, so usually 5 angles...
the trouble when I try the multiangle guide, I don't know because when I click on an angle on dvd decrypter, the pgc is as long as the movie; do you know what I mean? so angle one is 6 gb, angle 2 is six gigs, angle 3 is 6 gigs, etc, and this despite the fact only a few songs have actually multianlges; if I was to rip each angle separetely and put it on it's own folder it would take me 21 gigs to rip a dvd that has an iso as big as 7.78 gigabytes.
can someone help me and tell me how to deal this kind of dvds? I Know I have to rip by vob id if I use dif4u; that I have to 'manaully use 'scenarist', the things is that when I actually go through the process with encoding with cce, scenaid etc, scenarist is never able to rebuild the 'angled' vts..
so is this question answerable.
dvd shrink can do, but crappy quality cause 51% compression. removing many extras.
thank you.

[influenza]

Maybe you could better have posted this in the dif4u and related tools section. It would also be nice to know what errors you encounter so we'll have a better understanding. rebuilding a multi angled dvd is something that's absolutely possible.

[Arky]

Moved, as per influenza's recommendation, above...

Good luck, hope you get a useful answer to your question here.


Arky ;o)

[influenza]

Well since you were implying that you were have troubles with dif4u, scenaid etc I thought it would be better to put it here. If you decided to do everything manually I have no hard feelings putting it back in the authoring forum of course ;)

But let's start at the begin. The backup procedure can be divided roughly into four parts:

1)demuxing (dif4u)
2)encoding (batchccews/batchencodem2v,cce)
3)reauthoring/muxing(scenaid, scenarist)
4)putting stuff back together (ifoupdate/batchupdateifo, ifoedit)

So if you're encountering any problems we would like to know in what stage and what errors.

Some general directions on your dvd:

In most cases with multiangle dvds vobid demuxing is necessary. This means later on that dummying audio will be a problem (so if you have 3 audio tracks and decide to keep number 1 and 3 this will get you into trouble later). So this can be a source of possible problems.

if you're dealing with multiple angles the encoding part is pretty strict. You need to make sure that all angles have the exact same amount of frames and are encoded the same way (close all gops, restrict auto I-frame insertion). If this isn't the case you won't be able to compile. (the angle checkbox in batchccews takes care of the encoding part, not of the number of frames).

Hopefully this will give you some more info on how to cope with this kind of dvd. But please let us know where 9if so) you get stuck in the process.

[MarioGarcia]

all I do or that I am able to do is demux with dif4u, using numenu4u to compress menu, when it has finished i load the demuxing directory into scenaid which launches batchccews, then I press the green play button to start encoding, that's all I have done so far, I have not modified anything,
dif4u demuxes by vob ID i see that box is checked when demuxing, I just know that there are two songs in the dvd that have 5 angles.

[influenza]

Ok so you get to the encoding stage, and what happens then?

[MarioGarcia]

after it finished encoding; the project is imported into scenarist by scenaid after a while I got a compile error window saying:

"scenarist has failed due to a script error, further actions have been cancelled"

then I click on view and take a peek to information window,
in the build tab i got :


Error MuxFromDB:MuxVTS failed
Error Multiplex failed
Error DVD Video files could not be created

and it's like that everytime.

one thing i have noticed is that in dif4u; there's a line that says:

"VTS 01 contains angles and was autoswitched to Vobid demux(manual use of scenarist required", and that's what I can't do since, I do what I describe above,

[influenza]

well you can disregard that dif4u message. That one stems from the time that vobid demuxes could not be done automated. But scenaid can do that now.

Make sure you get the latest scenaid and try again. After scenarist errors out you can just restart it and open the scenaid script. Then you can just make any manual change you want.

Please try to get the complete error message, cause there should be more.

[MarioGarcia]

I have found this file on my demux folder:

[jel]

attachment approved.

your multiplexing errors are a result of this:Error Video or Audio Buffer underflow: (Dts: 20024412, SCR 20024507)
Error dvd_mux : DoMux Multiplexing Error
Error Terminated Multiplexing (ScenAid30-VTS01_002_Track_t.vob.0).
Error Total bitrate is too HIGH. Please reduce the stream bitrate or the number of stream.if you run a search for this error you will find these threads:
Another Scenarist Error .. Please Help (http://forum.doom9.org/showthread.php?s=&threadid=66563&highlight=Error+Video+Audio+Buffer+underflow)
and
NuMenu4U RC3 Build 1 + Scenarist 2.7 -> Scenarist script error (http://forum.doom9.org/showthread.php?s=&threadid=85531&highlight=Total+bitrate+too+HIGH)
and others, which will help you with your error.

the upshot of it all is that you MAX bitrate for that stream is too high, and you will have to re-encode the video stream. this gets further complicated by the fact that it contains angles (i think???!?)

you may want to paste the relavant info from the ifo so we can see what we are dealing with ... angles/dts audio etc etc...

[influenza]

Yeah the max bitrates in the ccedata.txt do not take into account that thoses maxes should be lower if dealing with multiangles. Maybe eyes can look into that. So this will mean that you have to reencode with lowered max bitrates. You should be fine by only reencoding the vobids that are part of the angle blocks. So reencode those, delete the vif files created by scenarist (and I would also remove the cache and mux data) and recompile.

[MarioGarcia]

the original ifo you mean?

[influenza]

I deleted the ifo, since it contains copyrighted material. Please just paste the relevant part of it here (the one with the structure)

[MarioGarcia]

I don't know if this archive will be allowed, I just did print screen of the relevant info.. so that you can see.
thank you for all your help, this is a challenge I want to go until the last instance.
ifo (http://users.tvcablenet.be/personal/tvcn27303/images/ifo.jpg) ifo2 (http://users.tvcablenet.be/personal/tvcn27303/images/ifo2.jpg)

[influenza]

Ouch. Scenarist can't do this seamless branching stuff (the ilvu parts). But the structure is simple enough to replicate (you won't get the ilvu muxing though).

Just encode the angles correctly (mark as angle in batchccews), respect the max bitrate and run the latest scenaid on it (if you didn't already)

[MarioGarcia]

I have to click angle on batchcce only in the champter that have angles? after the ifo only chapters 4 and 6, or i have to click on angle throughout the whole 'segments' of the vts 1?
does dif4u cuts in chapter or segments? like dvd-rb?

[D3s7]

ONLY the angle assets

look in the ifo and anything that shows "Angle" needs to have that flag

[influenza]

you demux by vobid and check the vobids that are angles so 2,3,4,5,6,8,9,10,11,12. And be sure to set the max bitrate in the ccedata.txt (or in batchccews) much lower (and press replace in batchccews after making changes). Do a search for max bitrate and angles and usefull stuff will come up

[MarioGarcia]

do you mean the files that are named in batchcce? vts_01_v001.4 per instance;
is the v001, v002 the "vobid's"?
this is what I get when I launch Scenarist. batchcee (http://users.tvcablenet.be/personal/tvcn27303/images/batch.jpg)
I'll put the bitrate to 6500 maybe it's enough, let's hope I won't get a crappy quality.

[influenza]

yes the v001 etc files are the vobid numbers

[MarioGarcia]

hello there,
I think I have successfully backed up this dvd for the first time which I am very thankful, even though I am beginning to think this dvd was not backupable.. I set the bitrate in the vobid with angles to 6500 and I think that I exagerated, I find that the picture is rather poor.
thank you either way for all your help, now I know how to use the big 3.
thank you again.

[influenza]

Good to hear :)

[D3s7]

I believe your max bitrate could have been 7608

maxbitrate for 4 angles is 7800 - the 4 48k audio