trying to figure out a bitrate

[ShadowDweller]

I am trying to figure out a bitrate for a movie I am reauthoring. Well, I didn't like the extras on the movie so I am using titlesetblanker to remove everything except the menu and the main movie. I know that before I used blanktitleset dof4u gave me a really low bitrate, because I only checked the main movie. Now when I start batchcce I see that my bitrate is still low. My question now is how do I calculate a bitrate and what bias and Q factor should I use for this movie. Thanks. Also, the movie is Butterfly Effect. This movie is incredible, everyone should see this movie.

[ShadowDweller]

Oh, I also see an option in batchcce for quality. I would like to know how to figure this out too.. thanks

[trigger638]

What I would suggest is that you alter your source and ifo files, personally I would strip them using ifoedit but use what ever you like. You should then be left with a video folder that contains the altered sources (stripped without the extras) and the ifo's that relate to them. Once you have this just create an iso out of the folder using ImgTool Classic 0.91.2 or similar. Once you have your iso mount it using deamon tools and run DoItFast4U again. It will correctly reencode the main film for the available space now.

There is a dvd calc feature in DoItFast4U, but it requires a folder with everything except the main movie to make its calculations. So you could do that as well.

And then you could always do it the way it was done before awsome things like DoItFast4U came out, manually. If your interested check out the Robshot - Bach method aka RoBa CCE guide in the DVD encoding guides section.

There certainly could be some slicker way out there to calculate this that I am unaware of, but this should work for you.

Trigger

[Bilbo69]

I usually reauthor the DVD using the Big 3, then build an oversized DVD from the orginal movie, calculate the size of menus and things I don't want to reencode. From there I know exactly the remaining size for the movie. I calculate the bitrate : 8*(size in bytes of the original movie)/(movie duration in seconds). You then have bits/sec bitrate that you divide by 1000 to have the value you need to enter in BatchCCE.

I don't know for the other parameters, but I'd be interested to learn.

Bilbo

[SuperTat]

Originally posted by Bilbo69
I calculate the bitrate : 8*(size in bytes of the original movie)/(movie duration in seconds). You then have bits/sec bitrate that you divide by 1000 to have the value you need to enter in BatchCCE.


I'think 8*(size in bytes of the original movie)/(movie duration in seconds) it's something like the bitrate of the original movie. Maybe You mean 8*(size of the remaining available space in bytes )/(movie duration in seconds). ....

Supertat

[Bilbo69]

Aaaaarg... yeah, what you said. I knew I should have re-re-read that...

Sorry for messing up the thing a bit more...

[ShadowDweller]

Originally posted by trigger638
What I would suggest is that you alter your source and ifo files, personally I would strip them using ifoedit but use what ever you like. You should then be left with a video folder that contains the altered sources (stripped without the extras) and the ifo's that relate to them. Once you have this just create an iso out of the folder using ImgTool Classic 0.91.2 or similar. Once you have your iso mount it using deamon tools and run DoItFast4U again. It will correctly reencode the main film for the available space now.

Trigger

Thanks for the reply, could you go into some more details about stripping the ifo files. How would I use ifoedit to strip them? I used vtssetblanker, i'm guessing, to "strip" the ifo files.

[trigger638]

Sure thing. First make a file copy of your title to your hard drive. Mounting an iso is not good enough here as you need to modify the files directly, so they need to be writable. Just make a rip with DVD Decrypter and use file mode making sure in the file mode settings that splitting is set to by file. Or you can mount a iso you made with DVD Decrypter and do a windows file copy to a new directory, either way.

What you need to do is figure out what title sets and vob id's contain the extras you want to strip. What I do is load each title set into Vobrator (available on the downloads page under Descrambling/Ripping tools). Vobrator takes vob files as input and breaks them down into vobid. For each vobid you can preview the video. It works for all vob files even menu vobs (video_ts.vob and vts_01_0.vob and so on). I load each vob file one at a time and then preview the contents of each vobid to see if it is something I want to get rid of. If the vob id contains something I want to strip out, I record what title set it is part of and the vobid (so if its vts_01 or vts_02 and then the vobid for the extra I don't want). Vobrator is a little tempermental, if the vobid is very small sometimes it will crash. Just watch out for trying to preview very small vobid's as described by the number of packets in the stream stats window.

Once I have my list of things to strip, I fire up IfoEdit. I load the IFO for the first title set on my list. So if vts_01 has some vobid's I want to get rid of I load vts_01_0.ifo. Now in the middle of the IfoEdit window by the bottom is two buttons, Menu Extras and Vob extras. Menu extras refer to anything that you may have found in a menu vob file (menu vob files are the ones with _0.vob, so like vts_01_0.vob contains the menu extras and vts_01_1.vob contains the Vob extras. video_ts.vob is allways menu extras).

So lets say that vobid 3 in vts_01_1.vob is a extra I want to strip. I would click on Vob Extras button. This screen shows all the options of what you can do. Were not remuxing so uncheck that. There is an option to strip streams here, this refers to removing audio and subtitle streams, were not doing that right now so uncheck it. The next option is want we want, Strip VobID's. Make sure to check Correct Vob-Unit and Correct original IFO files (this will give us new ifo files to properly handle the fact that the video is now gone). The next thing to do is give it a location to write the new files under destination directory. Give it a clean directory and then click ok. The next screen brings up a listing of all the vobid's contained in this title. Check the ones you want to keep and uncheck the ones on your list. So if I wanted to just get rid of vobid 3 I would check everything but vobid 3.

After you have done this, click strip it. It takes a while. When it is done in the directory you selected you will have new .ifo, .bup, and .vob files. Now go to the directory where you ripped the disk, erase all the files for the title you just stripped (so if that was vts_01_0.ifo you loaded erase all the vts_01 files) and copy everything from your IfoEdit working directory into your rip directory.

Once you have done this to everything you want to strip and have copied all your new files into your rip directory, open the video_ts.ifo file in IfoEdit and click Get VTS Sectors. It will process all the ifo files and you are done. Run it through your software player and make sure everything is cool.

If you have menuedit I would recommend that you take the time to remove the buttons that relate to the material that you have stripped, just some extra insurance for anything going wrong.

This proceedure works for me every time, I have even done complicated things like removing the full screen version of a title that has both full and wide screen.

Once you have your folder with your extras stripped check your folder size, if its still to big to fit on a -5 layer one disk, make an iso out of the folder with ImgTool Classic 0.91.2, mount it with Deamon tools, and re-run DoItFast4U. Now your bitrate will be correct, and when its all said and done you will have what you are after.

Hope this helps you out,

Trigger

[Bilbo69]

trigger:

Thanx for sharing this with us. Very interesting and smart way of combining different set of tools.

[ShadowDweller]

yeah, thanks a lot... That was exactly what I was going to do but I wasn't sure on how to make it into an iso again. I forgot all about that program classic. Oh, I used vtstitleblanker instead of vobrator. I just hope that the menu comes before the movie. Last movie I did, two fast too furious, the movie started and then when you pressed the menu key the intro menu played. I hope this doesn't happen with this movie.. thanks again for your input it was definitely helpful