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DVD drive init decoder fails

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  DVD drive init decoder fails Haines Brown <haines@histomat.net> - 2012-05-19 12:26 -0400
    Re: DVD drive init decoder fails HASM <netnews@invalid.com> - 2012-05-19 09:46 -0700
      Re: DVD drive init decoder fails Haines Brown <haines@histomat.net> - 2012-05-20 04:40 -0400
        Re: DVD drive init decoder fails Henrik Carlqvist <Henrik.Carlqvist@deadspam.com> - 2012-05-20 13:01 +0200

#1234 — DVD drive init decoder fails

I am attempting to play a commercial DVD on a Sony Optiarc 24X DVD/CD
SATA Rewritable Drive under Debian Etch. I have libavcodec53 installed.

I issue the command: 

  $ mplayer dvdnav:// /dev/dvd5

(for some reason I don't have /dev/dvd, but only /dev/dvd5 and dvdrw5)

This produces the error:

  MPlayer SVN-r31918 (C) 2000-2010 MPlayer Team
  Loading protocol-related profile 'protocol.dvdnav'

  Playing dvdnav://.

  Playing /dev/dvd5.
  libavformat file format detected.
  RAWDV file format detected.
  VIDEO:  [DVSD]  720x480  24bpp  29.970 fps    0.0 kbps ( 0.0 kbyte/s)
  ====================================================================
  Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
  Selected video codec: [ffdv] vfm: ffmpeg (FFmpeg DV)
  ====================================================================
  ====================================================================
  Opening audio decoder: [libdv] Raw DV Audio Decoder
  ADecoder init failed :(
  Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
  ADecoder init failed :(
  Audio: no sound
  Starting playback...
  Could not find matching colorspace - retrying with -vf scale...
  Opening video filter: [scale]
  Movie-Aspect is undefined - no prescaling applied.
  [swscaler @ 0x8b5a460]BICUBIC scaler, from yuv411p to yuv420p using \
            MMX2       
  VO: [xv] 720x480 => 720x480 Planar YV12
  V:   0.0   1/  1 ??% ??% ??,?% 0 0 ^[[J^MV:   0.0   2/  2 ??% ??% \
       ??,?% 0 0 ^[[$ 

  Exiting... (End of file)

This disk plays on a DVD player and is for Region 1. So I don't
understand why the decoder cannot be initialized. Am I missing some
software? 

Haines Brown

 

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#1235

Haines Brown <haines@histomat.net> writes:

>   $ mplayer dvdnav:// /dev/dvd5
> (for some reason I don't have /dev/dvd, but only /dev/dvd5 and dvdrw5)

You can probably fix this editing /etc/udev/rules.d/70-persistent-cd.rules.
Mine recently went to /dev/dvd1 with some upgrade and I had to fix it there.

> This produces the error:
> ...
> Am I missing some software? 

Do you have libdvdcss installed?

And my mplayer also tells me (not related to your problem though):
  Remember to disable MPlayer's cache when playing dvdnav:// streams (adding -nocache to your command line)

-- HASM

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#1236

> Haines Brown <haines@histomat.net> writes:
>
>>   $ mplayer dvdnav:// /dev/dvd5
>> (for some reason I don't have /dev/dvd, but only /dev/dvd5 and dvdrw5)
>
> You can probably fix this editing /etc/udev/rules.d/70-persistent-cd.rules.
> Mine recently went to /dev/dvd1 with some upgrade and I had to fix it there.

I commented all the duplication lines, but apparently have to await the
next reboot for it to take effect.  

>> This produces the error:
>> ...
>> Am I missing some software? 
>
> Do you have libdvdcss installed?

I installed libdvdcss2_1.2.10-1_i386.deb and did # updatedv. But when I
did $ locate libdvdcss2, this was all that I found. Besides some
/usr/share/doc/*,  

  /var/lib/dpkg/info/libdvdcss2.list
  /var/lib/dpkg/info/libdvdcss2.md5sums
  /var/lib/dpkg/info/libdvdcss2.postinst
  /var/lib/dpkg/info/libdvdcss2.postrm
  /var/lib/dpkg/info/libdvdcss2.shlibs

And yet below it seems to be doing what it should.

> And my mplayer also tells me (not related to your problem though):
> Remember to disable MPlayer's cache when playing dvdnav:// streams
> (adding -nocache to your command line)

I did this, using the old /dev/dvd number, and got:

  $ mplayer -nocache dvdnav:// /dev/dvd5
  MPlayer SVN-r31918 (C) 2000-2010 MPlayer Team
  Can't open joystick device /dev/input/js0: No such file or directory
  Can't init input joystick
  mplayer: could not connect to socket
  mplayer: No such file or directory
  Failed to open LIRC support. You will not be able to use your remote control.
  Loading protocol-related profile 'protocol.dvdnav'

  Playing dvdnav://.
  libdvdnav: Using dvdnav version MPlayer-custom
  libdvdread: Using libdvdcss version 1.2.10 for DVD access
  libdvdread: Can't stat /dev/dvd
  No such file or directory
  libdvdread: Could not open /dev/dvd
  libdvdnav: vm: failed to open/read the DVD
  Couldn't open DVD device: /dev/dvd (No such file or directory)
  No stream found to handle url dvdnav://

  Playing /dev/dvd5.
  File not found: '/dev/dvd5'
  Failed to open /dev/dvd5.

I assume the first stanza is not important. The second suggests to me
that the libdvdcss is in fact being used. The problem is that libdvdread
wants to read /dev/dvd, when it does not yet in fact exit. 

So I created a dvd --> dvd5 symlink, but that didn't help:

  $ mplayer -nocache dvdnav:// /dev/dvd
  ...
  Loading protocol-related profile 'protocol.dvdnav'

  Playing dvdnav://.
  libdvdnav: Using dvdnav version MPlayer-custom
  libdvdread: Using libdvdcss version 1.2.10 for DVD access
  libdvdread: Can't stat /dev/dvd
  No such file or directory
  libdvdread: Could not open /dev/dvd
  libdvdnav: vm: failed to open/read the DVD
  Couldn't open DVD device: /dev/dvd (No such file or directory)
  No stream found to handle url dvdnav://

  Playing /dev/dvd.
  File not found: '/dev/dvd'
  Failed to open /dev/dvd.

I don't understand why if there's a symlink, dvd --> dvd5 --> sr0, it
does not work.

Haines

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#1237

Haines Brown <haines@histomat.net> wrote:
> I don't understand why if there's a symlink, dvd --> dvd5 --> sr0, it
> does not work.

Maybe you would get some explanation by reading the source for mplayer or
by running mplayer in a debugger. However, it might be easier to study the
output from "strace mplayer -nocache dvdnav:// /dev/dvd" even though that
will give a lot of text. To get a file searchable by your favorite editor
you can "strace mplayer -nocache dvdnav:// /dev/dvd >& /tmp/log.txt".

regards Henrik
-- 
The address in the header is only to prevent spam. My real address is:
hc351(at)poolhem.se Examples of addresses which go to spammers:
root@localhost postmaster@localhost

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