[Feisty] libxvidcore missing dependency for yasm for i386 arch : more than 3 times slower than in edgy

[Kent Gibson]

Binary package hint: libxvidcore4

Feisty's libxvidcore4 debian/control is missing a dependency for yasm [i386] - thus making any xvid encode 3 times slower than it should. This problem doesn't affect amd64, nor should affect other arch

debian/changelog should have as Depends: debhelper (>> 4), yasm [i386 amd64], dpatch

After an upgrade from edgy to feisty I noticed that Xvid transcoding was significantly slower.
e.g. mencoder blah.avi -ovc xvid -xvidencopts bitrate=2000 -nosound -o blah.mp4

Reverting to the edgy libxvidcore4 (2:1.1.0-final-0.1ubuntu1) fixed the problem.
Switching back to the feisty package (2:1.1.2-0.1ubuntu1) again produced the slower performance. No other libraries were changed.

Building libxvidcore from source produced a package which performed badly as per (2:1.1.2-0.1ubuntu1).

Reading the doc/INSTALL I noticed this in the build Requirements:

   - nasm on ia32 platforms for MMX/SSE optimized code.

Installing nasm and rebuilding the package produced a libxvidcore that performed at least as well as (2:1.1.0-final-0.1ubuntu1).
So I'm guessing that (2:1.1.2-0.1ubuntu1) was built without nasm.

[disturbed (disturbed1976)]

I had the same experience.

With the default Fiesty libxvid I only achieved 3-4 FPS. Simply downloading the xvid 1.1.2 source tarball and doing
./configure --prefix="/usr"
make
sudo make install

I now get 14-15 FPS.

[Mark Jovalekic (m-jovalekic)]

I can confirm this.

Xvid-Encoding in feisty is significantly slower than in edgy (dapper)

[Albert Gasset (albertgasset)]

I also can confirm this.

For me the version in Edgy is 3 times faster.

[Loïc Martin (loic-martin3)]

I've quickly built a dirty package that fixes the problem - it's the Ubuntu Feisty one compiled with yasm as Depends not only for amd64 but also for i386.

However, it's not signed - I'll try to find my key tomorrow (laaate now) and upload a prefect one.

Except for that everything works - I've gone from 2 fps to 15 fps (2nd pass). It depends on yasm now, so if dpkg complains just :
sudo apt-get install yasm

[Loïc Martin (loic-martin3)]

New package, signed, correct dependencies now (so you won't have to install yasm anymore)

[Brandon Holtsclaw (imbrandon)]

uploaded to proposed

[Martin Pitt (pitti)]

Accepted into feisty-proposed, please go ahead with QA testing.

[Mark Jovalekic (m-jovalekic)]

I tried the fixed libxvidcore with mencoder and the speed is normal again.
Thank you.

[Loïc Martin (loic-martin3)]

The new package works for me too, I tried a few encodes

[BradPhipps (bradphipps)]

Works for me!
Using feisty's original libxvidcore4 I encoded at 8 frames per second. After installing "1.1.2-0.1ubuntu1.1~proposed1". I'm now getting 23 frames per second, with no problems.

[Steve Kowalik (stevenk)]

Unsubscribing ubuntu-universe-sponsors since this is being taken care of.

[jslawler (jlawler)]

I can also confirm that this new package has fixed the problem.
My encode speeds increased from around 17 FPS to 55 FPS.

[Loïc Martin (loic-martin3)]

I've check with upstream that yasm is needed for i386 and amd64, but not for other architectures. This patch is a diff for gutsy xvid package

[Reinhard Tartler (siretart)]

uploaded, please set to fix released if all builds are available

[Martin Pitt (pitti)]

Reinhard, there is nothing in the feisty-updates queue. Can you please try again? NB that I cannot copy the -proposed package because it has the ~proposed version suffix.

[Martin Pitt (pitti)]

Accepted into feisty-updates.