On 9/13/18 7:40 AM, JD wrote: > > > On 09/12/2018 04:39 PM, Cameron Simpson wrote: >> On 13Sep2018 08:29, Cameron Simpson <cs@xxxxxxxxxx> wrote: >>> Regarding the DVD CSS stuff: I seem to recall from long ago that reading a CSS >>> DVD without the libdvdcss stuff to arrange decoding produced read issues, not >>> just garbled data. This might be that. >> >> Ah, here we go. In the tar-1.30 source, src/create.c, around line 1104. The >> "shrank...padding" message happens if tar gets a short read (not an I/O error). >> >> So I think the VOB file read is very short. See if other tools can read that file, >> since it is a mounted drive. >> >> Cheers, >> Cameron Simpson <cs@xxxxxxxxxx> > I tried that, and it is clear that tar is unable to read the drive. To wit: > > $ ls -l VTS_10_1.VOB > -r--------. 1 jd jd 1073739776 Mar 18 2013 VTS_10_1.VOB > $ cat VTS_10_1.VOB | wc -c > cat: /run/media/jd/JACK_REACHER/VIDEO_TS/VTS_10_1.VOB: Input/output error > 4067328 > So, the output file was padded by zeros instead of the real McCoys!!! > In other words, dvdcss screwed up royally, and I cannot use the backup > as replacement if my DVD gets seriously damaged by a bad player drive. > Just wonderbar!!!! > libdvdcss did not screw up at all. "cat" is unaware of, and doesn't use, libdvdcss. -- Cardinal Rule of Presentations: "Tell them what you are going to tell them, tell them, then tell them what you told them."
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