Originally posted by: digitalfreaknyc
You're losing resolution by doing that. DVDshrink re-encodes everything.

That's not necessarily true, as DVD Shrink has a 'No Compression' option, which means it'll just de/remux everything without re-encoding the video, so the quality will remain untouched. That way its just reauthoring how the disc is put together, without altering its contents.

I too like to alter the prohibited user setting on Babyhum releases, although I use IFOedit to change the PUOP settings (no lengthy reauthoring required).

Here's some info I've culled from the net:

"http://forum.doom9.org/archive/index.php/t-52555.html

Originally posted by DVD Mahn
I recently finished one of my first authoring attempts with ReelDVD. Everything went fine apart from one annoying thing. I can’t set the 'Prohibited User Operations' on my animated DVD menu in ReelDVD.

So I downloaded IfoEdit(V0.91 and V0.95) and located the PUOs ( VMGM_PGCI_UT ) and changed them to block out Stop, Pause etc. But when I preview the DVD in IfoEdit and PowerDVD I can still access the blocked out PUOs. Don’t know what I am doing wrong here. I am no expert at IfoEdit or indeed the technical side of DVD so it might be something really simple I am missing here. Can anyone help me out?

Thanks
You can disable/enable selected Prohibited User Operations options in your menus (VTS_*_0.IFO / VTSM_PGCI_UT /PGC-Menu_*) or in your video title clips (VTS_*_0.IFO / VTS_PGCITI / VTS_PGC_*). Options checked means they will be disabled and viceversa for unchecked. Press OK to exit options and you will need to save your IFO too. I have no problems in doing it this way in IFOedit 0.95 and PowerDVD.

Thanks for your help 2COOL! I had only set UPO in VTSM_PGCI_UT. But when I did the same in VTS_PGCITI it worked! Yipii! I have no idea what exactly I just did, the structure of the .IFO files are a mystery to me. But hey, as long as it works

Are there any good documents on the net about the .IFO files?...

This last one took a while to discover, but setting the title playback type to '60' restores full freedom to navigate the disc. Babyhum usually has this set to '21', here's rough explanation of some of the effect different values have (and where they are located):

Video_TS.ifo
VMG_PTT_SRPT
title playback type - 21 [15] = prohibited user op. Time play or search: both yes
title playback type - 85 [55] = prohibit PPT no, prohib Timeplay search yes
title playback type - 60 [3c] = prohibited user op. Time play or search: both no"