Perhaps what I'm trying to do is impossible and makes no sense, but this is what I can't make work:
From within After Effects CC (126.96.36.1994 - I haven't upgraded as I'm mid project on a 4K film and terrified by all the bug activity), I've imported a Premiere Pro sequence via Dynamic Link.
The sequence is composed of 4K DPX files, as well as end titles. The DPX files aren't contained in a solitary video track. There are actually a few tracks at play.
If I double click on the sequence in the project window in AE, it plays (albeit not in realtime) in a Footage window. So far so good.
However, if I drag the sequence to the timeline, it doesn't create a new composition, even though the time ruler itself shows a time graph that's the correct duration. The compositional viewer displays a b&w checkerboard pattern.
Am I doing something wrong, or is this not a possible undertaking?
Could be a hardware acceleration issue. There are also some issues with some specific DPX file types if I remember correctly (something with log fiels from a DaVinci or something like that). Without knowing more details nobody can really say.