@johnny.duguid Are you sure this functionality exists?
When uploading image sequences via the Publishing Tools straight from Shotgun Desktop it only uploads the first frame of the sequence as a thumbnail. There’s is no automatic QT movie proxy generation, and I couldn’t find anything in that regard in the default hooks. Or am I missing something?
According to this Thread it also seems like that’s the case…
The only things I could find where some automatic image sequence conversion step in the Nuke or After Effects engine hooks, when running the tk-multi-publish2 from within there.