Saturday, October 4. 2008

Unicap 0.9.3 and UCView 0.22 released

Unicap 0.9.3 and UCView 0.22 just got released!

Changes in the unicap release:

- optionally use libv4l to support more cameras

- fix installation directory of plugins for x64 systems

- fix scaling of ogg/theora video

- use categories for v4l2 properties

Changes in the UCView release:

- small changes to plugin api

- support video downscaling for ogg/theora videos

- russian translation

Important changes to the ubuntu package files:

The unicap packages got renamed to libunicap2, libunicapgtk2, libucil2 to match the debian package naming convention. It is recommended to uninstal the old packages named libunicap-2, libunicapgtk-2 and libucil-2.

The source code for the new release is available here: http://unicap-imaging.org/download.htm. The source code is available here: http://unicap-imaging.org/download.htm. Binary packages for Ubuntu 8.04 are available in the repositories ( using repositories ).

Posted by

Arne Caspari

in Announcements at 14:45 | 6 Comments | No Trackbacks

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There's a typo in ucil_avc_avi.c on line 586. It says UCIL_FOURC but should say UCIL_FOURCC. This typo causes the emitted shared library to have an unresolved symbol UCIL_FOURC, which is reported as an error when linking ucview against libucil.so.

#1 Matt Whitlock on 2008-10-27 06:45 (Reply)

Thanks, I will have a look. The code in question is disabled by default.

The avcodec module of UCIL is currently not very well supported and mainly untested. It will get replaced by a new AVI module some time in the future - until then I recommend to use the Theora encoder instead.

#1.1 Arne Caspari on 2008-10-27 08:25 (Reply)

Thanks. I personally would always prefer to use Theora, but I ran into this bug while authoring unicap and ucview ebuilds for Gentoo.

http://bugs.gentoo.org/show_bug.cgi?id=175881
http://bugs.gentoo.org/show_bug.cgi?id=244586

Of note, I also had to patch the #include lines for avcodec.h and avutil.h to conditionally use the new paths being pushed down from the ffmpeg project: and .

#1.1.1 Matt Whitlock on 2008-10-27 09:04 (Reply)

Comment script ate my text, which was enclosed in angle brackets.

Those paths are libavcodec/avcodec.h and libavutil/avutil.h.

#1.1.1.1 Matt Whitlock on 2008-10-27 09:05 (Reply)

I would recommend to leave avcodec support disabled in the ebuild if possible as it might break in the future. I do not think there is any software using the avcodec support.

#1.1.1.1.1 Arne Caspari on 2008-10-27 09:10 (Reply)

Okay, I posted a revised ebuild that does not give the option to enable avcodec support in unicap.

#1.1.1.1.1.1 Matt Whitlock on 2008-10-27 09:25 (Reply)

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