Have you ever had video and audio freeze in your recordings Ruben? We've seen that 2 or 3 times this semester . . . always close to the end of the lecture.
2012/4/12 Rubén Pérez <[email protected]>: > That may well be the cause, but I don't see how. I was testing the > unsynchronization between the presenter and the presentation a while ago and > I used a laptop playing a video in a loop. Never had problems to process the > videos. > > > 2012/4/12 Jack Vant <[email protected]> >> >> 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 > > > > _______________________________________________ > 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
