Opened 12 months ago

#10258 new defect

crop filter stops working after zmq change height when crop is the last filter

Reported by: Michael Enke Owned by:
Priority: normal Component: undetermined
Version: unspecified Keywords: zmq crop freeze
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no


Summary of the bug:
How to reproduce:

% ffplay -f dshow -i video="Integrated Webcam" -vf hflip,zmq=b=tcp\\://\\:13333,crop=w=in_w/2:h=in_h/2
ffplay version

When sending now a message to crop filter to change h (Parsed_crop_2 h in_h), the video display freezes.
Problem does not occur when

  • changing w
  • crop filter comes before zmq filter
  • behind crop filter, another filter is appended (e.g. vflip)

As well, the zmq documentation is maybe wrong. It says: zmq must be inserted between two video filters
But it works even zmq is the last or the first video filter.

Attachments (1)

ffplay-20230314-084258.log (1.2 MB ) - added by Michael Enke 12 months ago.
log file created with -report option

Download all attachments as: .zip

Change History (1)

by Michael Enke, 12 months ago

Attachment: ffplay-20230314-084258.log added

log file created with -report option

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