Gilt dies für: gleiche Datei am gleichen Speicherort und gleicher Zielspeicherort?
@MCMUPPET: Nein, OTRVerwaltung3Plus läuft in einer anderen VM. Datein sind kopiert.

@mchawk: Win 7 läuft in einer VM und ist nur OTR und einer alten FiBu vorbehalten.

Habe inzwischen
- die neueste CutAssistant Version installiert
- andere .otrkey des HQ-Films heruntergeladen und getestet
- mögliche Störenfriede deinstalliert: LAME v3.99.3, VLC Media Player 3.0.11, Audacity 2.2.0

Bisher keine Besserung. Folgendes steht im Log:
Code:
AVI: Opening file "C:\Users\nn\Downloads\Merlin_und_das_Schwert_Excalibur_21.07.19_20-15_tele5_120_TVOON_DE.mpg.HQ.avi"
Beginning dub operation.
Dub: Fast recompress mode started with format: UYVY.
Dub: I/O thread has not cycled for thirty seconds -- possible livelock. (Thread action: stalled due to full pipe to processing thread) (Current address: 77C3015D)
Dub: Processing thread has not cycled for thirty seconds -- possible livelock. (Thread action: reading video frame) (Current address: 77C2F8D1)
Dub: I/O thread has not cycled for thirty seconds -- possible livelock. (Thread action: stalled due to full pipe to processing thread) (Current address: 77C3015D)
Dub: Processing thread has not cycled for thirty seconds -- possible livelock. (Thread action: reading video frame) (Current address: 77C2F8D1)
Ending operation.
Operation was aborted by user.