Hi Leo,

> You can try to truncate the file to the smallest size that reproduces the issue, 

obvious, of course, now that you've explained it. Thanks and sorry for being a 
bit slow there.

I've cropped 3 seconds of black from the video which contains enough frames to 
trigger the issue. I have removed all unnecessary streams and metadata from the 
file and have uploaded the result to the VideoLAN upload portal. In the 
description I have linked to this mailthread in the list archive. This should be 
"safe" while hopefully also being useful.

Harald