Introduction to Opencast Matterhorn: Apereo 2014
- 1. Opencast Matterhorn for lecture capture and video management Scalable. Flexible. Powerful. Open Source. Stephen Marquard stephen.marquard@uct.ac.za University of Cape Town
- 2. Opencast Community Universities, companies and people: • concerned with academic video • attracted to the Opencast values of openly exchanging ideas, experience, knowledge and code • committed to building and maintaining a robust, flexible, high-quality open source lecture capture and academic video management solution. Now also becoming part of
- 3. Where is Opencast Matterhorn used? Around the world, with strong adopter communities in USA, UK, Germany, Spain 43 Adopters with public information (May 2014) http://opencast.org/ matterhorn-adopters
- 5. Automated classroom capture Galicaster Capture Agent: Build your own, or buy. Open software license (CC- NC) for non- commercial use. www.teltek.es Typically use capture cards or USB devices from Datapath Blackmagic Epiphan
- 7. Studio recording Example of using Galicaster and Matterhorn in a MOOC studio: http://wiki.teltek.es/display/ Galicaster/Galicaster+based+ Polimedia+MOOC-Studio
- 8. Upload do-it-yourself (DIY) recordings: • from your computer (e.g. with TheREC) • from Sakai or another LMS using LTI • directly to the Matterhorn inbox (server folder) • from BigBlueButton http://zentrum.virtuos.uos.de/therec/ https://code.google.com/p/bigbluebutton/ wiki/Matterhorn
- 9. Processing Matterhorn video processing is defined by flexible and powerful workflows which determine how the media is processed, and encoding profiles which define the formats (container and codec). You can write your own workflow to suit your needs. Matterhorn uses ffmpeg and other open source tools to analyse and transcode audio and video. For example a lecture capture workflow at the University of Cape Town: 1. ingest recording (audio, presenter/camera track, presentation/slide track) 2. create working versions (mix in audio) 3. hold for review and trimming 4. normalize audio (adjust to reasonable loudness) 5. create download MP4 versions at 360p (H264) 6. create FLV streaming versions 7. archive high-quality versions (720p/1080p)
- 10. Workflow and encoding example https://bitbucket.org/opencast-community/matterhorn-cape-town-fork/ # Trim a stream profile.trim.work.name = trim track profile.trim.work.input = stream profile.trim.work.output = visual profile.trim.work.suffix = -trimmed.#{in.video.suffix} profile.trim.work.ffmpeg.command = -strict unofficial -i #{in.video.path} -vcodec copy -acodec copy -ss #{trim.start} -t #{trim.duration} #{out.dir}/#{out.name}#{out.suffix}
- 11. Distribute You can choose how to distribute (publish) recordings from Matterhorn (defined in workflows and encoding profiles) Download (e.g. mp4) Matterhorn another web server support download whole file or progressive download Flash Streaming (rtmp) red5 wowza nginx-rtmp Third-party services e.g. Youtube Or Your campus video portal, MOOCs, …
- 12. Opencast Matterhorn Capture Process Distribute Playback Engage player Paella Player Matterhorn2Go Mobile App (Android / Apple) Inside Sakai or another LMS with LTI Youtube
- 13. Matterhorn Engage Player (Flash) engage.opencast.org/engage/ui/ Features: dual-stream, download / share / embed, flash rtmp streaming or progressive download, slide thumbnails
- 14. The Paella Player (HTML5) Features: clean modern look, supports wider range of devices.
- 15. Matterhorn2Go for Apple iOS and Android (find it in the app store!)
- 16. Inside Sakai (with self-service scheduling) or another LTI-compliant LMS
- 17. Join the Opencast community Opencast website http://opencast.org/ (read the adopter stories!) Mailing lists community@opencast.org (low frequency) matterhorn-users@opencast.org (implementers, users) matterhorn@opencast.org (developers) IRC #opencast (irc.freenode.net) Source code https://bitbucket.org/opencast-community Issue Tracking and Wiki http://opencast.jira.com Commercial support for Matterhorn: Entwine entwinemedia.com Teltek www.teltek.es and others.