Stephanie, The code that does that is in $SOURCE/modules/matterhorn-conductor/src/main/java/org/opencastproject/workflow/handler/ComposeWorkflowOperationHandler.java. Apparently it assumes that there is only one input track per composing operation, which means that there can only be one "in.video.path" per operation.
If you wanted to create a composition based on that code, you should create another workflow operation where you can specify both tracks explicitly. and then include that operation in your workflow. That is a rather advanced topic, but you can take a look at: http://opencast.jira.com/wiki/display/MH/Workflow+Operation+handler+%28Trunk%29 and http://opencast.jira.com/wiki/display/MH/Create+a+Custom+Workflow+Operation+Handler (which may be outdated given the last modification date). I hope it helps. Best regards Rubén Pérez TELTEK Video Research www.teltek.es 2012/8/30 Stephanie Fuller <[email protected]> > When encoding a recording, the encoding profile has an ffmpeg command > that specifies the input as > -i #{in.video.path} > which is very nicely replaced with the complete path to Presentation.mpg. > > How does it know this? If I want to combine the Presentation.mpg and the > Presenter.mpg into a side-by-side output, what is the string I should use > to specify the additional input for ffmpeg? > > Where would I be able to find this trivial detail in the matterhorn > documentation? > > Thanks, > Stephanie > > _______________________________________________ > Matterhorn-users mailing list > [email protected] > http://lists.opencastproject.org/mailman/listinfo/matterhorn-users > >
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