Blender Git Commit Log

Better handing of frames below actual sequence range

When trying to load file below actual sequence range
(like trying to load file for scene frame 10 when clip's
start frame is 20) first frame from file sequence is used.

Before this change first file used to be loaded for every
scene frame below start frame, which polluted memory with
unwanted data.

Now first frame would be loaded only once in this case.