"No accelerated IMDCT transform found" / Long enco

[Irogaldin]

Hello,

I've installed Kubuntu 7.04 and downloaded the latest handbrake CLI version:

Code: Select all

$ uname -a
Linux mypc 2.6.20-16-generic #2 SMP Thu Jun 7 20:19:32 UTC 2007 i686 GNU/Linux

$ handbrake -u
HandBrake 0.8.5b1 (2007042001) - http://handbrake.m0k.org/
Your version of HandBrake is up to date.

The following problem is new with that combination (don't know what is the cause). With my old installation Kubuntu 6.10 I've never this problem.

The encoding needs more than 8 hours (1 pass)! On my old Kubuntu 6.10 (same PC, same hardware configuration) it needs only 2-3 hours (2 pass):

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$ handbrake -f ogm -e xvid -E vorbis -q 0.3 -B 160 -R 44.1 -t 1 -a 1,3 -i /media/cdrom -o my_movie.ogm
HandBrake 0.8.5b1 (2007042001) - http://handbrake.m0k.org/
2 CPUs detected
Opening /media/cdrom...
Scanning title 1...
+ title 1:
  + vts 1, ttn 1, cells 0->12 (2692943 blocks)
  + duration: 02:03:34
  + size: 720x576, aspect: 1.78, 25.000 fps
  + autocrop: 0/0/0/0
  + chapters:
    + 1: cells 0->0, 220844 blocks, duration 00:09:18
    + 2: cells 1->1, 216694 blocks, duration 00:10:54
    + 3: cells 2->2, 206385 blocks, duration 00:10:11
    + 4: cells 3->3, 174870 blocks, duration 00:09:19
    + 5: cells 4->4, 228472 blocks, duration 00:10:15
    + 6: cells 5->6, 235766 blocks, duration 00:11:05
    + 7: cells 7->7, 235680 blocks, duration 00:11:04
    + 8: cells 8->8, 270511 blocks, duration 00:13:26
    + 9: cells 9->10, 430655 blocks, duration 00:18:22
    + 10: cells 11->12, 473066 blocks, duration 00:19:41
  + audio tracks:
    + 1, English (AC3) (5.1 ch), 48000Hz, 384000bps
    + 2, Italiano (AC3) (5.1 ch), 48000Hz, 384000bps
    + 3, Deutsch (AC3) (5.1 ch), 48000Hz, 384000bps
    + 4, English (AC3) (2.0 ch), 48000Hz, 192000bps
  + subtitle tracks:
    + 1, English
    + 2, Francais
    + 3, Italiano
    + 4, Deutsch
    + 5, Espanol
    + 6, Greek, Modern
    + 7, Unknown
    + 8, Turkish
    + 9, Hrvatski
    + 10, Slovenian
    + 11, Italiano
    + 12, Deutsch
    + 13, Italiano
    + 14, Deutsch
No accelerated IMDCT transform found
No accelerated IMDCT transform found
Encoding: task 1 of 1, 1.42 % (5.86 fps, avg 6.32 fps, ETA 08h02m01s)

Instead of -q 0.3 using -b 100 has same problem:

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handbrake -f ogm -e xvid -E vorbis -b 100 -B 160 -R 44.1 -t 1 -a 1,3 -i /media/cdrom -o my_movie.ogm
HandBrake 0.8.5b1 (2007042001) - http://handbrake.m0k.org/
2 CPUs detected
Opening /media/cdrom...
Scanning title 1...
+ title 1:
  + vts 1, ttn 1, cells 0->12 (2692943 blocks)
  + duration: 02:03:34
  + size: 720x576, aspect: 1.78, 25.000 fps
  + autocrop: 0/0/0/0
  + chapters:
    + 1: cells 0->0, 220844 blocks, duration 00:09:18
    + 2: cells 1->1, 216694 blocks, duration 00:10:54
    + 3: cells 2->2, 206385 blocks, duration 00:10:11
    + 4: cells 3->3, 174870 blocks, duration 00:09:19
    + 5: cells 4->4, 228472 blocks, duration 00:10:15
    + 6: cells 5->6, 235766 blocks, duration 00:11:05
    + 7: cells 7->7, 235680 blocks, duration 00:11:04
    + 8: cells 8->8, 270511 blocks, duration 00:13:26
    + 9: cells 9->10, 430655 blocks, duration 00:18:22
    + 10: cells 11->12, 473066 blocks, duration 00:19:41
  + audio tracks:
    + 1, English (AC3) (5.1 ch), 48000Hz, 384000bps
    + 2, Italiano (AC3) (5.1 ch), 48000Hz, 384000bps
    + 3, Deutsch (AC3) (5.1 ch), 48000Hz, 384000bps
    + 4, English (AC3) (2.0 ch), 48000Hz, 192000bps
  + subtitle tracks:
    + 1, English
    + 2, Francais
    + 3, Italiano
    + 4, Deutsch
    + 5, Espanol
    + 6, Greek, Modern
    + 7, Unknown
    + 8, Turkish
    + 9, Hrvatski
    + 10, Slovenian
    + 11, Italiano
    + 12, Deutsch
    + 13, Italiano
    + 14, Deutsch
No accelerated IMDCT transform found
No accelerated IMDCT transform found
Encoding: task 1 of 1, 0.30 % (5.99 fps, avg 6.49 fps, ETA 07h54m44s)

I can't remember "No accelerated IMDCT transform found" on my old installation.

Some idea?

Other threads: Undocumented errors? Or I just missed it.(PTS Discontinuity and "No accelerated IMDCT transform found"

[jbrjake]

As I recall the IMDCT message is from the ac3 decoder. As audio decoding isn't as intensive as other things HB does, that's not likely to be the bottleneck (read: ignore it).

So ruling out that, what'd be causing the slow-down? Answer: ...I don't know.

Are you downloading the source and compiling it locally or downloading a binary? If the former, try the latter.

[Irogaldin]

I should not only search for that message in combination with handbrake :-/
http://ixquick.com/do/metasearch.pl?que ... 22&cat=web

I will try to compile my own handbrake...

Perhaps that will be the better choice...

Thanks a lot...

Edit: Performance is not enhanced... Don't know why...