Hi Tero, thanks for sharing your knowledge. I took a look at the wiki and to bring it to public I would propose to add an additional page in the section "Capture Agent Configuration" in the trunk release docs[1]. Then we can copy it to the 1.2 release docs. In addition I can add an FAQ point for that. You can ping me if you need help or when it's done. Then I update the FAQs.
regards Nils [1] http://opencast.jira.com/wiki/display/MH/Capture+Agent+Configuration+%28Trunk%29 > Quoting [email protected]: > >> Hi, >> >> does anyone already has experienced this problem? On the recorded >> video of the vga2usb device we see every recording shifted to the >> right by some 50 pixels or so (so the left border is filled up with >> black color). >> >> We use Ubuntu 10.10 and MH 1.2; the Epiphan homepage says something >> about that problem, but where do I fix this on Ubuntu? >> >> Any input appreciated, regards, Andreas > > Hi! > > I had the same problem, and spent last weekend finding a cure for it. > > I documented this in the opencast wiki, but it's still in my private > space, as I didn't know where to put it etc... > > Here's a few lines that will get you the v2u -utility from the Epihan > SDK compiled. > > I used Ubuntu 10.4.3, as it's an LTS edition. > (We want Matterhorn to be long-time, right?) > > ----%<--%<--%<----- > > > wget http://www.epiphan.com/products/epiphan_sdk-3.26.1.0021.zip > unzip epiphan_sdk-3.26.1.0021.zip > cd epiphan_sdk-3.26.1.0021 > cd epiphan/samples/v2u > sudo aptitude install libusb-dev zlib1g-dev > make > sudo chmod 777 /dev/vga2usb* > cd build/release/ > ./v2u --list > > ----%<--%<--%<----- > > You should get something like: v2u: 1 frame grabber detected: D4U24888 > > Now that you have v2u installed, you can change all the timings (try > changing a vga-mode line, it takes some time to get them right, or you > can cheat and connect a windows laptop and check the timings from it's > debug info, like so: http://mok.fi/mok/VGA-mode-Win7.jpg and just copy > them to the linux init scripts. The settings are cleared every time > you reload the kernel module). > > I was lazy and just copied the v2u file to /usr/local/bin. > > Also very useful is the -a gain=100 (or so) line, as we had problem > with the VGA capture being always washed-out, or underexposed. > > Remember to include the "sudo chmod 777 /dev/vga2usb*" -line to > /opt/matterhorn/capture_agent/epiphan_driver/Makefile, otherwise your > normal matterhorn user won't be able to access the device. > > v2u can also grab a quick .jpg from the source that helps in debugging > issues (mount some directory from the Capture Agent to your desktop > via SSHFS, and start testing). > > You should also have a look at "modinfo vga2usb.ko" as there are a few > options that also affect this behaviour. > > Hope this helps! > > Any additional tips and comments are very welcome! > > > Tero K. > Network Systems Administrator (padawan) > University of Helsinki, IT Dept, AV services. > ------- > Tero Kärkkäinen > [email protected] > +358-50-5822365 > > _______________________________________________ > Matterhorn-users mailing list > [email protected] > http://lists.opencastproject.org/mailman/listinfo/matterhorn-users > > _______________________________________________ Matterhorn-users mailing list [email protected] http://lists.opencastproject.org/mailman/listinfo/matterhorn-users
