The lectures we've had problems with here are an hour and 15 minutes and the professor does Powerpoint and YouTube videos. I can't give an exact slide count, but I can ask her for an average. It may well be that the YouTube videos are the cause of the problems we see,
On Thu, Apr 12, 2012 at 9:34 AM, Christopher Brooks <[email protected]> wrote: > How long of a presentation? > > Chris > > >> We also discovered a problem with long presentations with lots of >> slides in a late 1.3 beta - I think it may affect 1.2 (it was fixed >> for the 1.3 release). Basically when the workflow gets to create the >> segmented video it requests the md5 sum of the file * the number of >> segments. The md5 was being calculated (it wasn't stored) causing the >> cp on the admin node to max out and the service to become >> unresponsive ... >> >> D >> >> On 04/11/2012 07:39 PM, Jack Vant wrote: >> > We have five machines involved in our Matterhorn installation, an >> > admin machine, a worker that does the encoding, a dedicated engage >> > server and 2 streaming servers behind a load balancer. We do use >> > shared (nfs mounted) storage. We are version 1.2. What do you mean >> > by "have been build with the >> >> workspace --rather than the workspace-stub -- profile"? >> > 2012/4/11 Rubén Pérez<[email protected]>: >> >> In some cases there are problems with files bigger than 2GB. >> >> Sometimes those errors are avoidable, sometimes aren't. I >> >> corrected myself a couple of bugs in the WorkingFileRepository >> >> service (I think that was the part, but at least it was related), >> >> which directly affected the processing of videos (trimming them to >> >> 2GB if they were bigger). This is fixed in trunk, but did not make >> >> it to 1.3 . >> >> >> >> I wonder which version are you using and if *all* the machines in >> >> your setup use a shared drive to process the videos (and have been >> >> build with the workspace --rather than the workspace-stub -- >> >> profile). >> >> >> >> Regards >> >> >> >> 2012/4/11 Jack Vant<[email protected]> >> >>> We have a professor here who utilizes Powerpoint presentations >> >>> with large numbers of slides and imbedded in the presentations >> >>> are youtube videos, so the track for the presentation video is >> >>> quite large, 1.2 gigs on average. Several of her captures have >> >>> failed during processing and reingestion fails and the mpg for >> >>> the presenter computer is blamed. The last two lectures for this >> >>> class processed just fine but the last 10 minutes of one lecture >> >>> and the last 5 minutes are not viewable, the video freezes and >> >>> the audio along with it. These lectures are an hour and 15 >> >>> minutes. Have we hit some threshold? >> >>> >> >>> -- >> >>> Jack Vant >> >>> System Engineer - Unix >> >>> Office of Information Technology >> >>> Boise State University >> >>> 208-426-4446 >> >>> 208-863-0031 >> >>> _______________________________________________ >> >>> 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 >> >> >> > >> > >> >> _______________________________________________ >> Matterhorn-users mailing list >> [email protected] >> http://lists.opencastproject.org/mailman/listinfo/matterhorn-users > > > > -- > Christopher Brooks, BSc, MSc > ARIES Laboratory, University of Saskatchewan > > Web: http://www.cs.usask.ca/~cab938 > Phone: 1.306.966.1442 > Mail: Advanced Research in Intelligent Educational Systems Laboratory > Department of Computer Science > University of Saskatchewan > 176 Thorvaldson Building > 110 Science Place > Saskatoon, SK > S7N 5C9 > _______________________________________________ > Matterhorn-users mailing list > [email protected] > http://lists.opencastproject.org/mailman/listinfo/matterhorn-users -- Jack Vant System Engineer - Unix Office of Information Technology Boise State University 208-426-4446 208-863-0031 _______________________________________________ Matterhorn-users mailing list [email protected] http://lists.opencastproject.org/mailman/listinfo/matterhorn-users
