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black_cauldron_the [2014/09/17 05:10] – beandogblack_cauldron_the [2014/11/13 16:41] (current) – [dvd_info] beandog
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   * [[Problem DVDs]]   * [[Problem DVDs]]
   * [[ddrescue]]   * [[ddrescue]]
 +  * [[http://spaceparanoids.org/code/BCS0NNW1.dvd_info.json.txt]]
  
 ** The Black Cauldron ** on DVD has some new copy protection on it (I think).  Either way, it's a pain, and had to work around some stuff.  Thankfully, it flushed out some bugs in [[dvd_info]] that are now fixed!  The basic takeaway is this: never assume that an IFO is valid. ** The Black Cauldron ** on DVD has some new copy protection on it (I think).  Either way, it's a pain, and had to work around some stuff.  Thankfully, it flushed out some bugs in [[dvd_info]] that are now fixed!  The basic takeaway is this: never assume that an IFO is valid.
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 Here's the story.  The DVD has 99 title tracks, and ten of them have invalid IFOs on them.  The invalid ones are 2 through 8, and 36 through 38.  The bogus title tracks are 2 through 8 and 97 through 99. Here's the story.  The DVD has 99 title tracks, and ten of them have invalid IFOs on them.  The invalid ones are 2 through 8, and 36 through 38.  The bogus title tracks are 2 through 8 and 97 through 99.
  
-The longest track is 31, even though there are a lot that are movie-feature length.  I haven't bothered pinning down which one it is yet.+** The feature move title track is number 39. **  The length is 1:20:05 and there are 17 chapters.  Audio for English, French and Spanish is Dolby Digital 5.1, 384 kbps. 
 + 
 +As you will see, there is a *lot* of data to sort through, which I'm guessing is intended to screw up or fool some DVD rippers. 
 + 
 +Here's some of the stats: 
 + 
 +  * 197 audio tracks 
 +  * 293 subtitles 
 +  * 956 chapters 
 +  * 1,262 cells
  
 Accessing it with libdvdread 5.0.0, here's what you'll probably see: Accessing it with libdvdread 5.0.0, here's what you'll probably see:
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 libdvdread: Invalid IFO for title 38 (VTS_38_0.BUP). libdvdread: Invalid IFO for title 38 (VTS_38_0.BUP).
 </code> </code>
 +
 +==== dvd_info ====
  
 Here's the human-readable output of [[dvd_info]] which skips the invalid IFOs: Here's the human-readable output of [[dvd_info]] which skips the invalid IFOs:
 +
 +** Edit: ** dvd_info now displays the track, but fills it with zeros (zero length, chapters, cells, audio streams, subpictures) so that it makes the output look more sane.
  
 <code> <code>
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 </code> </code>
  
-Here's the full JSON output from ''dvd_info'' as well, for reference:+Here's the full JSON output from ''dvd_info'' as well, for reference: [[http://spaceparanoids.org/code/BCS0NNW1.dvd_info.json.txt|BCS0NNW1.dvd_info.json.txt]] 
 + 
 +==== ddrescue ====
  
 ''ddrescue'' found some bad blocks while ripping it: ''ddrescue'' found some bad blocks while ripping it:
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 </code> </code>
  
 +==== HandBrake ====
 +
 +Here's the output of HandBrake 0.10-beta scanning track 31.  Interestingly enough, it reports the audio bitrate as 384 kbps ... not sure if that's another bomb planted in the DVD or not.
 +
 +** Edit: ** nope, DVDs can have up to 912 kbps for an MPEG2 stream.  I've just never seen one above 192 before. :)  See [[http://stnsoft.com/DVD/dvdmpeg.html|DVD - MPeg differences]]
 +
 +<code>
 ++ title 31:
 +  + vts 13, ttn 1, cells 0->22 (2162366 blocks)
 +  + duration: 01:27:20
 +  + size: 720x480, pixel aspect: 32/27, display aspect: 1.78, 23.976 fps
 +  + autocrop: 56/62/2/2
 +  + support opencl: no
 +  + support hwd: not built-in
 +  + chapters:
 +    + 1: cells 0->6, 28826 blocks, duration 00:01:26
 +    + 2: cells 7->7, 190318 blocks, duration 00:07:44
 +    + 3: cells 8->8, 52511 blocks, duration 00:01:50
 +    + 4: cells 9->9, 116345 blocks, duration 00:05:10
 +    + 5: cells 10->10, 190318 blocks, duration 00:07:44
 +    + 6: cells 11->11, 70020 blocks, duration 00:03:00
 +    + 7: cells 12->12, 199333 blocks, duration 00:07:28
 +    + 8: cells 13->13, 154636 blocks, duration 00:06:15
 +    + 9: cells 14->14, 241018 blocks, duration 00:09:23
 +    + 10: cells 15->15, 124439 blocks, duration 00:05:06
 +    + 11: cells 16->16, 93787 blocks, duration 00:03:58
 +    + 12: cells 17->17, 201861 blocks, duration 00:07:46
 +    + 13: cells 18->18, 241018 blocks, duration 00:09:23
 +    + 14: cells 19->19, 99730 blocks, duration 00:04:08
 +    + 15: cells 20->20, 84615 blocks, duration 00:04:02
 +    + 16: cells 21->21, 73404 blocks, duration 00:02:57
 +    + 17: cells 22->22, 187 blocks, duration 00:00:01
 +  + audio tracks:
 +    + 1, English (AC3) (5.1 ch) (iso639-2: eng), 48000Hz, 384000bps
 +    + 2, Francais (AC3) (5.1 ch) (iso639-2: fra), 48000Hz, 384000bps
 +    + 3, Espanol (AC3) (5.1 ch) (iso639-2: spa), 48000Hz, 384000bps
 +  + subtitle tracks:
 +    + 1, English (Closed Caption) (iso639-2: eng) (Bitmap)(VOBSUB)
 +    + 2, Francais (iso639-2: fra) (Bitmap)(VOBSUB)
 +    + 3, Espanol (iso639-2: spa) (Bitmap)(VOBSUB)
 +    + 4, Francais (iso639-2: fra) (Bitmap)(VOBSUB)
 +    + 5, Espanol (iso639-2: spa) (Bitmap)(VOBSUB)
 +    + 6, Closed Captions (iso639-2: eng) (Text)(CC)
 +</code>
 +
 +Also, HandBrake 0.10-rc2 segfaults on reading the DVD when using ''--scan --no-dvdnav'', because there are no cells on some of the tracks.  I've posted a bugfix [[https://forum.handbrake.fr/viewtopic.php?f=4&t=31093|here]].

Trace: