rosbag record theora

edit

I am trying to record video from several cameras into a bag file. Since I am planning to record fairly long scenes I want to record only compressed video. I managed to do so by recording only the /compressed topic:

rosbag record -e "/camera/image_raw/compressed(.*)"

I can then use a image_transport/republish node to recreate the full topic for my image_transport subscribers.

But I failed when attempting to keep only the theora video:

rosbag record -e "/camera/image_raw/theora(.*)"

When replaying and republishing, the later complains:

rosrun image_transport republish theora in:=/camera/image_raw out:=/video
[ WARN] [1331797616.250783734]: [theora] Packet was not a Theora header

And image_view on /video shows nothing.

If I directly attempt to view the stream using image_view and the theora codec, I get an empty window. rxgraph does show the connection between the bag node and the image_view node via the /camera/image_raw/theora topic though.