November 2011 - DVDnav-discuss - lists.mplayerhq.hu

OSD wrong decimal points with DVD/DVDNAV
by Roger Pack 16 Nov '11

16 Nov '11

Hello. I noticed the other day that the fraction timestamp gets "out of sync" in the OSD, when playing DVD/DVDNAV in mplayer, a la $ mplayer dvdnav:// -osdlevel 1 -osd-fractions 1 ex output (OSD outputs are the following): ... 00:00:04.24 00:00:04.27 00:00:04.30 ... 00:00:04.94 00:00:04.97 00:00:04.01 # lose a second 00:00:04.04 00:00:04.07 00:00:04.11 00:00:04.14 00:00:04.17 00:00:04.21 00:00:05.24 # regain it 00:00:05.27 00:00:05.31 ... It appears from a casual perusal that this is because the "second" pts count is being taken from demuxer_get_current_time (which returns the DVD's latest nav packet second, only updated maybe every 0.4s), but the numbers after the decimal point are being inferred from mpctx->sh_video->pts, the raw mpeg packet, which is slightly different. So it gets out of sync. So I'm assuming that a "good fix" for this would be to try to make dvdnav_get_current_time return a more precise timestamp, then passing that through and using only that for both the decimal and second counters. So...question: anybody know how to get "exact" DVD timing information within dvdnav? Any hints/clues? Any other words of advice before I dive in? Does my approach seem reasonable? I could also kind of hacky work-around it by remembering when the previous NAV packet was and calculating the time between then and now [1] but I'd guess that's not ideal... Also while looking at this, I noticed that 1) sometimes the mpeg video stream in DVD's starts about 0.28s "before" the NAV packets say the movie starts. 2) the NAV packets seems to not be off from this a bit. For example at second 0.70 they will say "it's second 0.5 now" anybody know why that might be? My guess is that they don't take that first 0.28 into consideration somehow...(which, coincidentally, when you rip it, it typically says that start second 0 is the same as DVD Vaguely related: http://lists.mplayerhq.hu/pipermail/dvdnav-discuss/2010-June/001202.html http://forum.videolan.org/viewtopic.php?f=32&t=76308&p=315461#p315461 https://github.com/Kovensky/mplayer-kovensky/blob/master/stream/stream_dvd.… http://trac.videolan.org/vlc/ticket/4 et al. Thanks. -roger-

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[ANNOUNCE] libdvdread/libdvdnav 4.2.0 release
by Dominik 'Rathann' Mierzejewski 15 Nov '11

15 Nov '11

Dear all, After a long break, we're happy to announce another release. We added some new features (e.g. OS/2 support, new APIs in libdvdnav), fixed a number of bugs and improved playback of badly mastered or "copy protected" DVDs. I wish to thank all contributors who submitted patches and did the testing. Keep up the good work! We also have a new project website at http://dvdnav.mplayerhq.hu/ . Big thanks to Arpi and Michael for providing the space and helping me set up the website. Download links for the 4.2.0 release are below: http://dvdnav.mplayerhq.hu/releases/libdvdread-4.2.0.tar.bz2 http://dvdnav.mplayerhq.hu/releases/libdvdnav-4.2.0.tar.bz2 Enjoy! Best regards, Dominik Mierzejewski -- Fedora http://fedoraproject.org/wiki/User:Rathann RPMFusion http://rpmfusion.org | MPlayer http://mplayerhq.hu "Faith manages." -- Delenn to Lennier in Babylon 5:"Confessions and Lamentations"

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libdvdread patches from my tree
by Erik Hovland 15 Nov '11

15 Nov '11

Here are the patches that I intend to push to svn soon. I would like to test them a bit longer and get your eyeballs on these patches before I push. All criticism appreciated. Some of these patches were originated by other people and just put into my tree (thanks to all of you for submissions). Thanks E -- Erik Hovland erik(a)hovland.org http://hovland.org/

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my libdvdread and libdvdnav trees
by Erik Hovland 14 Nov '11

14 Nov '11

In case you don't want to bother w/ using the patches, you can always clone my trees from github: https://github.com/microe/libdvdread https://github.com/microe/libdvdnav Thanks E -- Erik Hovland erik(a)hovland.org http://hovland.org/

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libdvdnav patches from my tree
by Erik Hovland 13 Nov '11

13 Nov '11

Here are the patches in my tree for libdvdnav. Many of these patches came from submissions to the mailing list. I intend to push these patches to svn in short amount of time. But I would like to test them a bit longer and try to get you to review them. If you authored any of these patches you should be able to recognize them. If you don't, let me know - there should be proper attribution in the patch and the look of the patch should not change much at all. Thanks E -- Erik Hovland erik(a)hovland.org http://hovland.org/

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[PATCH] ancient patch for copying palette info
by Roger Pack 12 Nov '11

12 Nov '11

Hello all. Dunno if this is debatable or not, but I found this patch (also attached): http://comments.gmane.org/gmane.comp.video.libdvdnav.devel/66 It didn't fix mplayer's dvdnav subtitle colors, but thought it might be worth examining anyway. Does it have any merit? Thanks! -roger-

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[PATCH] "dvdnav_jump_to_sector" as an alternative to "dvdnav_time_search" (Source)
by gnosygnu 06 Nov '11

06 Nov '11

Patches were generated with "svn diff" dvdnav.h.patch -> libdvdnav/src/dvdnav/dvdnav.h (adds 1 line) searching.c.patch.zip -> libdvdnav/src/searching.c (adds 650+ lines) For more info, see email titled [DVDnav-discuss] [PATCH] "dvdnav_jump_to_sector" as an alternative to "dvdnav_time_search" (Overview: Source to follow)

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Re: [DVDnav-discuss] [MPlayer-users] dvdnav problems 32bit MinGW
by Dominik 'Rathann' Mierzejewski 05 Nov '11

05 Nov '11

Hi Henry, I'm crossposting to dvdnav-discuss list, where you should continue this thread. On Saturday, 05 November 2011 at 20:30, Henry wrote: > Windows XP SP3, MinGW 4.6.1 svn 34301 > Been having this problem consistently on all DVD's for quite awhile now. > > Use the following command line with the following output: > > $ ./mplayer.exe -nocache dvdnav:// -alang en > > MPlayer SVN-r34301-4.6.1 (C) 2000-2011 MPlayer Team > > > > Playing dvdnav://. > > libdvdnav: Using dvdnav version MPlayer-custom > > libdvdread: Using libdvdcss version 1.2.10 for DVD access > > NAME OPEN FAILED > > libdvdnav: Unable to find map file > > 'C:/MinGW/msys/1.0/home/Henry/.dvdnav/.map' > > libdvdnav: DVD disk reports itself with Region mask 0x00fe0000. Regions: 1 > > > > libdvdread: Attempting to retrieve all CSS keys > > libdvdread: This can take a _long_ time, please be patient > > > > DVD will play fine until it's about halfway through and then it will start > over at the beginning. I then use the main menu key (5 keypad) and start at > the scene where the > video left off. But it would be nice to know what to do on my system to fix > this problem. > This is the output that occurs at the time where the DVD is bumped to the > beginning. > > A:1976.5 V:1976.5 A-V: -0.001 ct: 20.339 774/774 628% 4% 1628.8% 92 0 > > Invalid seek to negative position 8000801c! > > [ac3 @ 00e50940]incomplete frame > > A: 1.5 V:1977.6 A-V:-1976.141 ct: 20.276 26/ 26 18038% 133% 46818.0% 92 > > 0 > > [mpeg2video @ 00e50940]ac-tex damaged at 40 3 > > [mpeg2video @ 00e50940]Warning MVs not available > > [mpeg2video @ 00e50940]concealing 1215 DC, 1215 AC, 1215 MV errors > > A: 39.8 V: 39.8 A-V: 0.002 ct: 21.622 977/977 507% 4% 1316.3% 92 0 What is the title and region of the DVD? Would you be able to provide an ISO image to one of libdvdnav developers to try and fix the issue? Regards, Dominik -- MPlayer http://mplayerhq.hu | RPMFusion http://rpmfusion.org There should be a science of discontent. People need hard times and oppression to develop psychic muscles. -- from "Collected Sayings of Muad'Dib" by the Princess Irulan

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Patch from the Living dead for dvdnav
by Jean-Baptiste Kempf 04 Nov '11

04 Nov '11

Hello, I am super-annoyed, since I have a patch on dvdnav, that I apply on all VLC release, on Windows and Mac OS X, since (at least 2006). I understand absolutely nothing of this obscure patch on this obscure piece of code... It does work quite, but I can't explain it, since it predates my work on the project. I thought I should share it, with you, upstream, as someone could make some sense out of it. With my best (sorry) regards -- Jean-Baptiste Kempf http://www.jbkempf.com/ - +33 672 704 734 Sent from my Electronic Device

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Fwd: [PATCH] Make sure we get nav packets for all cells in multi angle
by Joakim Plate 03 Nov '11

03 Nov '11

Seems i forgot to cc this to list, might be interesting for someone. ---------- Forwarded message ---------- From: Joakim Plate <elupus(a)ecce.se> Date: Wed, Nov 2, 2011 at 6:23 PM Subject: Re: [DVDnav-discuss] [PATCH] Make sure we get nav packets for all cells in multi angle To: Roger Pack <rogerdpack2(a)gmail.com> > > I've noticed the discrepancy in MPEG pts times and the NAV packets, > too. Do you have any more information on this? Could you point me to > how your code coordinates using the NAV packets at all? > Thanks! > -r > It's quite simple actually and removes all discontinuties during playback: In input stream for libdvdnav: if(nav[n].start != nav[n-1].end) { diff = nav[n-1].end - nav[n].start; * return 0 bytes read to demuxer to EOF it and it flushes all mpeg packets. } After demuxer EOF global_diff += diff; diff = 0; Normally during reading from demuxer: packet = read from demuxer packet.pts += global_diff; The main files doing this would be: xbmc/xbmc/cores/dvdplayer/DVDInputStreams/DVDInputStreamNavigator.cpp xbmc/xbmc/cores/dvdplayer/DVDPlayer.cpp

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