0.12.0-1 Subtitles. ocrad used instead of tesseract

[Robbie G]

Binary package hint: ogmrip

Hi,

Version 0.12.0-1~getdeb (from Ubuntu MOTO developers) - I hope it's OK to log this bug here despite the fact this version's not in the repo.

I have a subtitles issue where ocrad outputs a number 5 instead of a capital letter S. I raised this with the OGMRip developers who state that tesseract is the preferred choise of the OGMRip developers.

However, if I install tesseract it will not be used because the ubuntu 0.12.0-1 OGMRip specifies ocrad at build time which means that the preferred behaviour does not take place.

I can see from the packaging history that this dependency was introduced at ogmrip 0.11.1-0 as a bug fix (200600) by Florent Mertens however the notes for that bug state "Build with --with-ocr=ocrad : ogmrip can't choose at runtime, so we have to make a choice at build time. - Add ocrad to build-dep"

But, since 0.12, ogmrip detects at runtime which OCR are installed and selects either tesseract, gocr or ocrad, in that order so, according to the developers, the build should specify --with-ocr=auto or --with-ocr=tesseract instead.

Thanks for all the great work.

Regards, Rob

[Launchpad Janitor (janitor)]

This bug was fixed in the package ogmrip - 0.12.2-0.0ubuntu1

---------------
ogmrip (0.12.2-0.0ubuntu1) intrepid; urgency=low

  * Merge from debian-multimedia (LP: #268063), remaining changes:
   - debian/libogmrip0.install & debian/install:
    + Don't install the .desktop file in the library package (LP: #204448)
   - debian/rules:
    + Drop configure flag --with-ocr=ocrad (introduced to fix LP #200600),
      as ogmrip now detect at runtime the ocr.
   - debian/control:
    + Set Depends for ocr to tesseract | ocrad | gocr . (LP: #247826)

ogmrip (0.12.2-0.0) unstable; urgency=low

  * New upstream release.

ogmrip (0.12.1-0.2) unstable; urgency=low

  * ogmrip need to depends on gpac for mp4 file.

ogmrip (0.12.1-0.1) unstable; urgency=low

  * Remove libgtk2.0-dev and add libglade2-dev, intltool and libgconf2-dev
    as dependencies for the libogmrip-dev package.
  * Don't package .la files and remove .a files from plugins directories.
  * Added libnotify-dev-gtk2.10 in Build-depends.
  * debian/rules Call quilt cleanly.

ogmrip (0.12.1-0.0) unstable; urgency=low

  * New upstream release.

ogmrip (0.12.0-0.0) unstable; urgency=low

  * New upstream release.

ogmrip (0.11.2-0.1) unstable; urgency=low

  * Removed gocr from Depends field.

ogmrip (0.11.2-0.0) unstable; urgency=low

  * New upstream release.

ogmrip (0.11.1-0.2) unstable; urgency=low

  * debian/watch fix address.

 -- Julien Lavergne <email address hidden> Fri, 03 Oct 2008 17:43:54 +0200

[unggnu (unggnu)]

This is still an issue in Intrepid with OGMRip 0.12.2. Even if tesseract is installed ocrad is used which is unusable imho.

[Robbie G (robbie-cartwood-nee-grimwood)]

I am on intrepid now too and tesseract is not being used however in my case gocr is being selected.

This is odd because ocrad is installed which, if I read things correctly, is different to the rule Launchpad Janitor details 21/10/08 namely:

"Set Depends for ocr to tesseract | ocrad | gocr . (LP: #247826)"

which I assume is an order of preference depending on what OGMrip finds installed.

Hope this helps, Rob

[Julien Lavergne (gilir)]

There is a typo in the package, as the name of the tesseract package is in reality tesseract-ocr.
A fixed package for Intrepid is available in my PPA : https://launchpad.net/~gilir/+archive
Could you please test with this package and tesseract-ocr installed and ocrad not installed and see if it's work ? Additionaly, if you can test with both installed and see if it's work too ?
Thanks.

[Robbie G (robbie-cartwood-nee-grimwood)]

Hi Julien,

1) With tesseract, gocr & ocrad installed (my config), gocr is used.

joebloggs@doddlebonk:~$ dpkg --get-selections | grep tesseract
tesseract-ocr install
tesseract-ocr-deu install
tesseract-ocr-eng install
joebloggs@doddlebonk:~$ dpkg --get-selections | grep gocr
gocr install
joebloggs@doddlebonk:~$ dpkg --get-selections | grep ocrad
ocrad install

gives us:

gocr -v 1 -f ASCII -m 4 -m 64 -o /tmp/sub.WW9GKU0601.pgm.txt /tmp/sub.WW9GKU0601.pgm
 Optical Character Recognition --- gocr 0.45 20071126

I will run 2 more checks without gocr. 2) with ocrad and tesseract & 3) with tesseract ony as per your request.

Will post again with each result

Cheers, Rob

[Robbie G (robbie-cartwood-nee-grimwood)]

WIth ocrad and tesseract installed, ocrad is used.

joebloggs@doddlebonk:~$ dpkg --get-selections | grep tesseract
tesseract-ocr install
tesseract-ocr-deu install
tesseract-ocr-eng install
joebloggs@doddlebonk:~$ dpkg --get-selections | grep gocr
joebloggs@doddlebonk:~$ dpkg --get-selections | grep ocrad
ocrad install

gives us:

ocrad -v -f -F byte -l 0 -o /tmp/sub.JJRKKU0305.pgm.txt /tmp/sub.JJRKKU0305.pgm

[Robbie G (robbie-cartwood-nee-grimwood)]

Hi Julien,

The final test is with only tesseract installed and it OGMrip seems not to get round to doing any OCR at all.

I quote the lines of the log file for reference. To the untrained eye it seems to launch straight into the audio decoding:

mplayer -nolirc -nocache -noframedrop -mc 0 -vc null -vo null -ao pcm:waveheader:file=/tmp/fifo.EARFKU -af volnorm=1 -channels 2 -aid 128 -dvd-device /dev/scd0 dvd://1
lame --nohist -h --preset fast medium /tmp/fifo.EARFKU /tmp/audio.L7QFKU
MPlayer 1.0rc2-4.3.2 (C) 2000-2007 MPlayer Team
CPU: Genuine Intel(R) CPU T2050 @ 1.60GHz (Family: 6, Model: 14, Stepping: 8)
CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
Terminal type `unknown' is not defined.

Playing dvd://1.
There are 2 titles on this DVD.
There are 1 chapters in this DVD title.
There are 1 angles in this DVD title.
audio stream: 0 format: ac3 (stereo) language: en aid: 128.
number of audio channels on disk: 1.
subtitle ( sid ): 0 language: en
number of subtitles on disk: 1
MPEG-PS file format detected.
VIDEO: MPEG2 720x576 (aspect 3) 25.000 fps 9800.0 kbps (1225.0 kbyte/s)
==========================================================================
Forced video codec: null
Opening video decoder: [null] Null video decoder
VDec: vo config request - 720 x 576 (preferred colorspace: BGR 24-bit)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
VO: [null] 720x576 => 1024x576 Planar YV12
Selected video codec: [null] vfm: null (NULL codec (no decoding!))
==========================================================================
==========================================================================
Forced audio codec: mad
Opening audio decoder: [liba52] AC3 decoding with liba52
AUDIO: 48000 Hz, 2 ch, s16le, 192.0 kbit/12.50% (ratio: 24000->192000)
Selected audio codec: [a52] afm: liba52 (AC3-liba52)
==========================================================================
[AO PCM] File: /tmp/fifo.EARFKU (WAVE)
PCM: Samplerate: 48000Hz Channels: Stereo Format s16le
[AO PCM] Info: Faster dumping is achieved with -vc null -vo null -ao pcm:fast
[AO PCM] Info: To write WAVE files use -ao pcm:waveheader (default).
AO: [pcm] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
A: 0.7 V: 0.0 A-V: 0.678 ct: 0.000 1/ 1 ??% ??% ??,?% 1 0
A: 1.0 V: 0.4 A-V: 0.683 ct: 0.000 2/ 2 ??% ??% ??,?% 2 0
A: 1.4 V: 1.3 A-V: 0.120 ct: 0.000 26/ 26 0% 0% 24.2% 21 0
A: 1.4 V: 1.3 A-V: 0.080 ct: 0.000 27/ 27 0% 0% 23.3% 21 0
A: 1.4 V: 1.4 A-V: 0.040 ct: 0.000 28/ 28 0% 0% 22.4% 21 0
A: 1.7 V: 1.6 A-V: 0.086 ct: 0.000 35/ 35 0% 0% 18.6% 24 0

Hope this helps - I'll be here for further tests if you need me.

Rob

[Julien Lavergne (gilir)]

Thanks a lot for all this test, I'll have a look at it.

[Julien Lavergne (gilir)]

I pushed a possible fix in my PPA : ogmrip - 0.12.2-0.0ubuntu2~ppa3 (Intrepid). It should bring the ocr automaticly now. Could you please do a test with this package ?
Thanks.

[Robbie G (robbie-cartwood-nee-grimwood)]

Hi, my first test with only tesseract (i.e. no gocr or ocrad) installed results in the following:

1) Tesseract cannot be used as there is no ability to rip srt subtitles.

2) 3 profiles "disappear" from the list of profiles - these are ones that use SRT text as the subtitle decoder. A profile configured with vobsub remains

3) If I add a new profile, the subtitle CODEC selector is blank (screenshot attached)

If I install either gocr or ocrad, the profiles "reappear" and I am able to select a subtitle CODEC in a new profile.

I hope this helps diagnose the problem!

[Julien Lavergne (gilir)]

Thanks for the tests.

>1) Tesseract cannot be used as there is no ability to rip srt subtitles.
Is it a normal behavior ? Because if tesseract can handle srt, so all profiles should not be available as they need a srt capable ocr.
In this case, it should be a bug or a feature request for tesseract.
I'll made another test package for another possibility.

[Julien Lavergne (gilir)]

Ok, maybe I found the problem. Please try the 0.12.2-0.0ubuntu2~ppa5 when it'll be available in PPA.

[Robbie G (robbie-cartwood-nee-grimwood)]

Thanks Julien, great work - we got there in the end!

The following *correct* behaviour is now seen with OGMrip 0.12.2-0.0ubuntu2~ppa5:

With my last setup i.e. only tesseract installed: tesseract is used

and...

With gocr, ocrad & tesseract installed: tesseract is used
With only gocr & ocrad installed: gocr is used
With only ocrad installed: ocrad is used

i.e. the behaviour as described by the great man himself:

"Comment By: Olivier Rolland (billl)
Date: 2008-07-12 08:45
Since 0.12, ogmrip detects at runtime which OCR are installed and selects
either tesseract, gocr or ocrad, in that order."

[Julien Lavergne (gilir)]

Thanks Robbie for the help :)

I included the debdiff to fix it in Jaunty.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ogmrip - 0.12.2-0.0ubuntu3

---------------
ogmrip (0.12.2-0.0ubuntu3) jaunty; urgency=low

  * debian/control:
   - Add libtiff4-dev as Build-Depends to add tesseract support.
  * debian/rules:
   - Add --with-ocr=auto flag to add runtime ocr detection (LP: #247826).

 -- Julien Lavergne <email address hidden> Thu, 27 Nov 2008 20:33:27 +0100