Should I update?

Should I update Lightroom Classic?

Lightroom Classic 15.6 · Known bug

H.264 video import hangs in dynamiclinkmediaserver on macOS

Not marked fixed as of Lightroom Classic 16.0.0. The bug was reported for Lightroom Classic 15.6. Adobe doesn’t track it yet; 3 people report it. It happens on macOS only.

Status
Not tracked by Adobe yet
Severity
Major
Affects
Specific feature
System
macOS only

Timeline

  1. Nov 1, 2026Reported on Lightroom Classic 15.6
  2. Nov 10, 2026Not marked fixed as of Lightroom Classic 16.0.0not tracked by Adobe yet

The report

3 votes · 3 replies

Reported on Windows by 1 person, on macOS by 3 (from the report and 3 replies).

“LrC 15.6 (macOS 27.2): H.264 video import and playback hang, dynamiclinkmediaserver stuck at 100% CPU in mc_dec_avc”

Read it on the Adobe Community board
Should you update Lightroom Classic today?Today’s verdict for Windows and macOS, and every known issue behind it.

Based on public bug reports on the Adobe Community board. Last changed November 10, 2026. The title and rating are ours; the report is the reporter’s. Not affiliated with Adobe.