#10258: crop filter stops working after zmq change height when crop is the last
filter
-------------------------------------+-------------------------------------
Reporter: Michael | Type: defect
Enke |
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: zmq crop | Blocked By:
freeze |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
How to reproduce:
{{{
% ffplay -f dshow -i video="Integrated Webcam" -vf
hflip,zmq=b=tcp\\://127.0.0.1\\:13333,crop=w=in_w/2:h=in_h/2
ffplay version 2023-03-05-git-912ac82a3c-full_build-www.gyan.dev
}}}
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.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10258>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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