I'm using a serialElement to have a short intro ad unit play before the main content (both are rtmp streams). For some reason the ad is playing twice. It plays once where I see only the length of the ad, then it plays again but now my total length reflects the ad and content together. I reversed them so that the long video was first and it behaved correctly. Any ideas what would cause that?
Could you try to set defaultDuration for the second element before placing it to composition?
May be there is an issue with the Load/Time trait (ie incorrect total time evaluation) so the Serial thinks that the second movie has complete and starts over.
I had a chance to experiment more on this. It seemed to work fine if the 2 videos were VideoElements. the symptom shows up if the video is a dynamic switching stream. Is that a known incompatibility? Or does it give a clue what may be causing this?