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Editing & Post-Production

Image-sequence imports create thousands of file handles and make project opening unusually slow.

Problem

Image-sequence imports create thousands of file handles and make project opening unusually slow.

Solution

Root Cause / Diagnostic:
Importing multi-thousand-frame image sequences as individual loose files forces the operating system file system and NLE project database to track thousands of distinct file descriptors. This massive metadata overhead causes extreme latency during project loading and auto-saves.

Actionable Fix:
1. Check the "Image Sequence" import box when importing frame sequences so the NLE encapsulates the frames as a single virtual clip object.
2. Transcode long image sequences into contiguous high-bitrate mezzanine files (Apple ProRes 4444 or Avid DNxHR HQX) before bringing them into the master timeline.
3. Time the project open sequence to verify that project load duration drops to normal operational speeds.

Pro Tip:
Never keep raw multi-thousand-frame PNG/EXR sequences loose on production timelines; wrapping them into single ProRes 4444 QuickTime files slashes project file size and speeds up save times tenfold.