watching 3D stereo mpo images with ushare

Some months ago I got my brand new LG 55LA6608 3D TV. Of course I wanted to watch the 3d photos taken with the Fujifilm Finepix Real 3D camera with it. The images taken by the camera are being stored using the MPO file format. These images consist of two jpeg images and some metadata inside the exif header inside the MPO container. According to the specification the television is capable of playing this file format, which works fine when using in example an USB-stick. However, it is desireable to watch the images using a network connection, for example when the files are stored on a linux server.

For displaying videos or images from a server this and other television devices use the DLNA protocol, which is implemented by by various linux services like minidlna or ushare. None of the tested ones was capable to present the MPO files to the TV. The solution to enable ushare to do this is quite simple. The MPO mime type has to be added to ushares supported file formats. This can be done by adding the line

{ “mpo”,  UPNP_PHOTO, “http-get:*:image/mpo:”},

to the MIME_TYPE_LIST array in mime.c. This has been verified to work with the ushare-1.1a. For convenience one can download the patch for this from here:

ushare-mpo.patch (895)

One can download the ushare sources from SourceForge. After downloading patch the ushare sources with the mpo-patch and build it. Build and usage instructions can be found in the readme file included in the ushare download from SourceForge. Do not forget to run ./configure –enable-dlna before running make for use with recent devices like the mentioned LG TV.

As usually, for gentoo users there is a more easy way: Create the directory

/etc/portage/patches/media-video/ushare/

and place the patch file in it. Make sure that the dlna USE-flag is set in /etc/make.conf or /etc/portage/package.use. Afterwards emerge ushare again and enjoy watching your 3D MPO images stored on your linux box using your TV.

regards

Jürgen

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stereoscopic mplayer-1.1-r1

Recently the new mplayer-1.1-r1 ebuild appeared in portage. In the article stereoscopic mplayer-1.0_rc4_p20110322 I provided a modified patch for stereoscopic support in mplayer-1.0_rc4_p20110322. This patch does not work with the current version anymore. However, only a minor fix has been required. To use the new patch, just download it from here: mplayer-stereoscopic-1.1-r1.patch (1377) and copy it to:

/etc/portage/patches/media-video/mplayer-1.1-r1/

Afterwards emerge mplayer and play stereoscopic movies with:

mplayer -vo gl2:stereo some_movie_file.avi

mithrandir

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stereoscopic mplayer-1.0_rc4_p20110322

Yesterday the new mplayer-1.0_rc4_p20110322 ebuild appeared in portage.  In the post stereoscopic mplayer working again part 2 I provided a modified patch for stereoscopic support in mplayer-1.0_rc4_p20101114. This patch still works with the current version.  To use it, just download the patch from there and copy it to:

/etc/portage/patches/media-video/mplayer-1.0_rc4_p20110322-r1/

afterwards emerge mplayer and play stereoscopic movies with

mplayer -vo gl2:stereo some_movie_file.avi

mithrandir

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stereoscopic mplayer working again part 2

One year ago I provided a patch for mplayer which included support for quad-buffered stereo, enabling mplayer to display stereoscopic movies. In the meanwhile mplayer-1.0_rc4_p20101114 arrived in portage. As before with the original patch from Stuart Levy, my one does not work anymore due to some changes in mplayers gl2 driver. So I had to modify the patch again to work again with newer mplayer versions. You may download the updated patch from here:

mplayer-stereoscopic-1.0_rc4_p20101114.patch (1119)

The patch should work at least with nvidia quadro boards, probably with some others. It can be used with CRT and generic shutter glasses or HMDs like the Vusix VR920. Some stereoscopic sample movies for trying it out can be found on www.3d.wep.dk.

The Gentoo way

For Gentoo users I again modified the mplayer ebuild from portage to include the patch. The modified ebuild is available here:

mplayer-1.0_rc4_p20101114.ebuild (948)

The older ebuild and patch are still available on mygnu.de.

To use the ebuild it just copy it to /usr/local/portage/media-video/mplayer and copy the the patch to the “/usr/local/portage/media-video/mplayer/files” directory. You probably have to create these directories. Then run

ebuild /usr/local/portage/media-video/mplayer/mplayer-1.0_rc4_p20101114-r1.ebuild digest

Be sure to include the following line in your /etc/make.conf.

PORTDIR_OVERLAY=”/usr/local/portage”

Then just re-emerge mplayer.

Now start mplayer with -vo gl2:stereo and enjoy the experience in the 3rd dimension again.

Jürgen

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FlightGEAR 2.0.0 on GENTOO

I have searched for a 3D game on Linux and found this nice flight simulation. In Gentoos portage tree there is only an old version avaiable, so I wrote an ebuild for the new version. It compiles fine on my computer wth 64bit Gentoo – Linux.

The Power of my graphics board (nVidia Corporation Quadro FX 360M) seems to be enough for this simulation. The control is not easy, but with some time, you can fly around, like in a real aircraft.

What is FlightGear?
The FlightGear flight simulator project is an open-source, multi-platform, cooperative flight simulator development project. Source code for the entire project is available and licensed under the GNU General Public License.

HowTo install on Gentoo:

Download FlightGear ebuild (1037) file which include the ebuilds

cd /usr/locale/portage
tar -xzpvf ~/flightgear-2.0.0.tar.gz

Then you have to unmask the ebuilds in /etc/portage/package.keywords :
=games-simulation/flightgear-2.0.0 **
=dev-games/simgear-2.0.0 **
=dev-libs/boost-1.37.0-r1 **
=dev-util/boost-build-1.37.0 **
=media-libs/freeglut-2.6.0  **

now you can ’emerge =games-simulation/flightgear-2.0.0′

Have fun

Xexplorer

UPDATE 04.03.2010:

Now it´s in portage, with two different lines. First of all I found out that freeglut 2.6 is needed for flightgear, so I put it in the ebuild. And the second is a patch witch is needed if you don´t use freeglut 2.6. So I think my choice is the better way.

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stereoscopic mplayer working again

One year ago I provided a gentoo ebuild for mplayer which included support for quad-buffered stereo, enabling mplayer to display stereoscopic movies like the great movie Avatar3D I watched in cinema today. To learn more about the movie look here and here. Sadly the patch I referenced there does not apply over newer mplayer versions. So I had to modify the original patch from Stuart Levy to work again with newer mplayer versions. You may download the updated patch from here:

mplayer-stereoscopic.patch (1348)

New version available!

The patch should work at least with nvidia quadro boards, probably with some others. It can be used with CRT and generic shutter glasses or HMDs like the Vusix VR920. Some stereoscopic sample movies for trying it out can be found on www.3d.wep.dk.

For Gentoo users I also modified the mplayer ebuild from portage to include the patch. The modified ebuild is available here:

mplayer-1.0_rc4_p20091026-r1.ebuild (926)

New version available!

The older ebuild is still available on mygnu.de.

To use the ebuild it just copy it to /usr/local/portage/media-video/mplayer and copy the the patch to the “/usr/local/portage/media-video/mplayer/files” directory.  You probably have to create these directories. Then run

ebuild /usr/local/portage/media-video/mplayer/mplayer-1.0_rc4_p20091026-r1.ebuild digest

Be sure to include the following line in your /etc/make.conf.

PORTDIR_OVERLAY=”/usr/local/portage”

Then just re-emerge mplayer.

Now start mplayer with -vo gl2:stereo and enjoy the experience in the 3rd dimension again.

Jürgen

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nvidia-drivers-180.37 causing strange segfaults

Today, while performing a large world upgrade on my gento x86_64 system, I noticed almost every build segfaulting (internal compiler error…). In the meanwhile I was encoding several videos (xvid) with avidemux. thus I had a somewhat high memory usage. Some of the avidemux processes also segfaulted. I noticed these segfaults also yesterday, but thought something was wrong with my video files. After many segfaults the system then ran completely out of memory and I had to reboot.

Because of my last experience with nvidias drivers (see: CTRL-C and CTRL-Z not working after nvidia-driver upgrade and high CPU usage) the nvidia-driver was my first supective. So I masked off nvidia-drivers-180.37 and downgraded to 180.29 again. Afterwads the segfaults didn’t occur anymore.

NVIDIA should really do better testing with their drivers before releasing.  Errors like this are normally extremely hard to track down, since nobody would suspect the graphics driver to be the reason for this. Well, in this case intuition saved me a lot of time…

regards

Jürgen

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